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Instructions for C and S Corporation Income Tax Returns South Carolina Department of Revenue | dor.sc.gov |September 2024
Enlarge image | Instructions for C and S Corporation Income Tax Returns South Carolina Department of Revenue | dor.sc.gov |September 2024 |
 Enlarge image | Contents Forms � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �1 What's New? � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �1 Filing Guidelines � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �1 General Instructions � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �4 Filing Requirements � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �4 Extensions and Estimated Payments � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 6 Penalties and Interest � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �6 Amended Returns � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �7 Consolidated Returns � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �8 Definitions � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �9 Policy Resources � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �9 Use Tax � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �10 SC1120 C Corporation Instructions � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �10 Line Instructions � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �10 PART I: Computation of Income Tax Liability � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �11 PART II: Computation of License Fee � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �14 Schedules A through G � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �16 Apportionment � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �18 Schedules J through N � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �22 S Corporation Instructions � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �23 Line Instructions � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �24 PART I: Computation of Income Tax Liability � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �25 PART II: Computation of License Fee � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �26 Schedules for SC1120S � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �27 Schedules A through N � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �27 Nonresident Shareholder Withholding � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �29 Composite Filing � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �29 Reminders � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �36 |
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Forms
Which form do I use to file my return?
● SC1120 - C Corporation ● SC1120U - Public Utility
● SC1120S - S Corporation ● CL-4 - Electric Cooperative
● SC1101B - Bank ● SC990-T - Nonprofit Organization with
● SC1104 - Savings & Loan Association unrelated business income
Taxpayers filing a federal 1120-F, 1120-H, 1120-POL, 1120-REIT, or a similar variation of the federal 1120
should file the SC1120. An insurance company must file with the Department of Insurance.
Forms are available at dor.sc.gov/forms. References to form numbers and line descriptions on the
federal Corporate Income Tax forms were correct at the time of printing. If, due to federal form
changes, you are unable to determine the proper line to use, contact the SCDOR Corporate Tax section
at 1-844-898-8542. Use these instructions as a guide when preparing your SC Corporate Income Tax
return. They are not intended to cover all provisions of the law.
What's New?
Conformity
South Carolina recognizes the Internal Revenue Code (IRC) as amended through December 31, 2023,
except as otherwise provided. If IRC sections adopted by South Carolina that expired on December
31, 2023 are extended, but otherwise not amended, by congressional enactment during 2024, these
sections are also extended for South Carolina purposes in the same manner that they are extended for
federal Income Tax purposes�
2024 Legislative Update
A list of significant changes in tax and regulatory laws and regulations enacted during the 2024
legislative session is available at dor.sc.gov/policy�
Filing Guidelines
Electronic Mandate
If you owe $15,000 or more in connection with any SCDOR return, you must file and pay electronically
according to SC Code Sections 12-54-250 and 12-54-210, available at dor.sc.gov/policy�
Abbreviated Instructions
● If all of the corporation's activities are in South Carolina, use Schedules A and B to make
adjustments to federal taxable income to determine South Carolina taxable income� Then
complete Part 1, page 1, to arrive at the income (loss) and compute the tax.
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● Complete the SC1120TC for any nonrefundable credits and carry the totals to the applicable line
on your tax return.
● Complete line 14 of the Schedule D and take the total stated capital amount to Part II, page 2 to
compute the License Fee� Then complete the remainder of the Schedule D�
● Corporations doing business in South Carolina and other states are required to allocate and
apportion the federal taxable income after the Schedule A and B adjustments.
■ Complete Schedule F to directly allocate dividends, capital gains on real estate, and income
items not related to the business of the corporation.
■ Complete Schedule H to apportion the business income (loss) of the corporation.
■ Manufacturers, retailers, and others dealing with tangible personal property generally use
the sales apportionment method of the Schedule H-1.
■ Service providers, construction contractors, renters of real estate, and others not dealing
with tangible personal property use the gross receipts apportionment of Schedule H-2.
● After allocation and apportionment, complete Schedule G to arrive at the total South Carolina
income (loss). Take the Schedule G amount to Part I, page 1 to compute the tax. Complete the
SC1120TC for any nonrefundable credits, and carry the totals to the applicable line on your tax
return�
● For License Fee purposes, take the total stated capital on line 14, Schedule D to Schedule E for
apportionment. Take this amount as apportioned to Part II, page 2 to compute the License Fee.
Mailing requirements
To be considered on time, your return must be postmarked by the due date.
Income Tax Period Ending
The Income Tax period ending date for the South Carolina Corporate Tax return is the same as for your
federal return. If you have elected for federal purposes to use a 52-53 week tax year that ends on
the same day of the week nearest to the last day of the calendar month, indicate the last day of the
calendar month as your end date for South Carolina purposes.
For example, if the federal 52-53 week tax year ends on January 3, enter December 31. If you enter an
incorrect date, you could receive a Failure to File Notice. The federal taxable income entered on Line 1,
Part 1 is not affected.
License Fee Period Ending
This period is one year in advance of the Income Tax period. For instance, if the Income Tax period ends
December 31, 2024, the License Fee period ends December 31, 2025.
Federal Employer Identification Number (FEIN)
For the SCDOR to process your return, you must include your FEIN.
Name
Enter the name of the corporation.
Mailing Address
Enter the address to be used on all Corporate Income Tax correspondence�
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The SCDOR has identified several common errors that result in processing delays:
● We will not process a faxed or emailed return�
● A corporation that does not file an Application for Certificate of Authority with the South
Carolina Secretary of State (SCSOS) must file an Initial Annual Report (CL-1) and pay a $25
License Fee to the SCDOR within 60 days of initially doing business or using a portion of its
capital in this state�
● You are required to file a South Carolina Corporate Tax return, regardless of activity, from the
date the charter/authority is granted by the SCSOS until the date of voluntary dissolution or
withdrawal� Failure to file may result in administrative dissolution�
● If any Corporate Income Tax or License Fee is due, you must make your payment and include
the SC1120-T, Application for Automatic Extension of Time to File a Corporate Tax Return, by the
original due date. There is no extension for payment for Corporate Income Tax or License Fee.
Any Income Tax or License Fee due must be paid by the due date to avoid late penalties and
interest�
■ You can request your extension to file by paying your balance due on our free online tax
portal, MyDORWAY, at dor.sc.gov/pay� Select Business Income Tax Payment to get started�
Your payment on MyDORWAY automatically submits your filing extension request. No
additional form or paperwork is required.
■ If no Income Tax or License Fee is due, and you have requested a federal extension, the
federal extension will be accepted as a South Carolina extension if the Corporate Tax return is
received within the time as extended by the IRS.
■ If you requested a federal or state extension, check the Extension box on the front of the
return�
● Corporations filing a consolidated return should file a single South Carolina extension. A federal
extension will be accepted if all corporations filing in South Carolina are included in one or more
federal extensions. The period covered by the South Carolina Corporate Tax return must be
the same as the period covered by the federal return in most instances. However, you should
enter the last day of the calendar month as the end date if your 52-53 week tax year ends on a
weekday nearest to the last day of the calendar month.
● The License Fee is calculated using Capital Stock and Paid-in or Capital Surplus. Do not use
Retained Earnings in the calculation. The minimum License Fee is $25.
● A consolidated return must include the calculation of a separate License Fee for the parent and
each subsidiary. A separate annual report and profit-and-loss statement are also required using
each member's own apportionment ratio.
● When claiming withholding, provide all necessary withholding statements (1099s or I-290s). If
the corporation uses a fiscal year, include a schedule showing payments made to South Carolina
during the year. You cannot use a K-1 to claim withholding�
● To avoid a declaration penalty for underpayment of Corporate Tax, a corporation filing its first
South Carolina Corporate Tax return or having federal taxable income of $1 million or more in
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any of the previous three tax years must pay 100% of the tax shown on the current year tax
return (or 100% of the tax if no return is filed). All other corporations must pay 100% of the
current year or prior year.
● Corporations must use their FEIN on their Corporate Income Tax return.
● Send appropriate forms with all payments. Make checks payable to SCDOR and include your
name, FEIN, tax year, and the type of tax in the memo. Do not send cash�
● Close your business with the SCSOS before filing your final return with the SCDOR.
● Round all amounts to the nearest dollar�
● Corporations conducting business in South Carolina are subject to all corporate filing
requirements set forth in the South Carolina Code of Laws�
For more information about Corporate Income Tax, visit dor.sc.gov/corporate. Questions? We're here
to help. Contact us at 1-844-898-8542.
General Instructions
Filing Requirements
You are required to file if you are transacting or conducting business within South Carolina. See page
1 for the correct form to use for your organization. Insurance companies file with the South Carolina
Department of Insurance. Homeowners associations and political organizations with no taxable income
are not required to file an Income Tax return. Forms are available at dor.sc.gov/forms�
Attach a copy of your federal form and supporting schedules to each return � Regardless of the activity
of the corporation, you must file a return and pay the License Fee until the charter or qualification is
canceled with the SCSOS.
Final return
Follow the steps listed below when filing a Final Return and ceasing to exist or when withdrawing from
this state. When making an S election only, do not check the Final box on the front of the return�
1� A domestic corporation must file Articles of Dissolution with the SCSOS.
2� A corporation other than a domestic corporation must file an Application to Surrender Authority
to do Business with the SCSOS.
3� After filing the Articles of Dissolution or Application to Surrender Authority to do Business, the
corporation must file a final tax return by the 15th day of the fourth month (15th day of the
third month if an S Corporation) after the end of the tax year. The final return must include a
schedule showing the distribution of the assets to the stockholders.
4� If you owe and need an extension of time to file your Corporate Tax return, you must file
the SC1120-T prior to the expiration of the filing period. If you do not anticipate owing an
Income Tax or License Fee, and you requested an extension of time to file your federal Income
Tax return, the SCDOR will accept a copy of the properly-filed federal extension as long as
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the Corporate Tax return is received within the extended time allowed by the IRS. Mark the
Extension box on the front of the Corporate Tax return�
5� Check the Final box on the front of the return�
Basis of return
The taxable income as shown on your federal tax return is the basis of your South Carolina return,
with certain adjustments for federal and state differences. Attach a copy of your federal return and
all supporting schedules. The South Carolina gross income and taxable income of a corporation is the
corporation's gross income and taxable income as determined under the Internal Revenue Code subject
to the modifications required by state law.
When to file:
● A C Corporation must file its Income Tax return by the 15th day of the fourth month after the
end of the tax year.
● An S Corporation must file its Income Tax return by the 15th day of the third month after the end
of the tax year.
● A new C Corporation filing a short period return must generally file by the 15th day of the fourth
month after the short period ends.
● A new S Corporation filing a short period return must generally file by the 15th day of the third
month after the short period ends.
Transfers to a corporation controlled by the transferor:
If a person receives stock and securities of a corporation in exchange for property and does not
recognize a gain or loss under IRC Section 351, the person (transferor) and the transferee must attach
the same information as required by Internal Revenue Regulation 1.351-3.
Signature
The return must be signed by an officer of the corporation who is duly authorized to make the report
on behalf of the corporation. Print the officer's name under the signature.
The signature section of the return contains an authorization for release of confidential information.
A check in the Yes box authorizes the SCDOR Director to delegate and to discuss the return, its
attachments, and any notices, adjustments, or assessments with the preparer.
Accounting Method
Use the same method of accounting under this chapter for federal Income Tax purposes. If your
method of accounting is changed for federal Income Tax purposes, the method of accounting for South
Carolina Income Tax must also be changed�
Provide the SCDOR with a copy of the written permission form received from the IRS. When written
permission is not required to change a method of accounting, provide the SCDOR with a copy of the
election or statement provided to the IRS.
Make necessary adjustments to federal taxable income by adding or subtracting South Carolina changes
resulting from the change in accounting method.
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Extensions and Estimated Payments
Request your extension to file by paying your balance due on our free online tax portal, MyDORWAY,
at dor.sc.gov/pay� Select Business Income Tax Payment to get started. Your payment on MyDORWAY
automatically submits your filing extension request. No additional form or paperwork is required.
If filing the SC1120-T by paper, include your name, FEIN, tax year, and SC1120-T in the memo of the
check. Do not send cash.
Attach your payment to the SC1120-T and mail to: SCDOR, Corporate Voucher, PO Box 100153,
Columbia, SC 29202.
If you do not anticipate owing tax, and you requested an extension of time to file your federal Income
Tax return, the SCDOR will accept a copy of your properly-filed federal extension as long as the
Corporate Tax return is received within the extended time allowed by the IRS.
Corporations filing a consolidated return should file a single South Carolina extension. A federal
extension will be accepted if all corporations filing in South Carolina are included in one or more federal
extensions�
Check the Extension box on the front of the return if you have requested a South Carolina or federal
extension�
There is no extension of time for payment of Corporate Income Tax or License Fee. Any Income Tax or
License Fee due must be paid by the due date to avoid late penalties and interest.
An extension of time to file the SC1120 does not extend the due date for your Business Personal
Property Return. File the Business Personal Property Return (PT-100) separately.
Declaration of Estimated Tax: Corporations must make Estimated Tax (or declaration) payments if their
Estimated Tax (Income Tax less credits) is determined to be $100 or more. Quarterly installments are
due by the 15th day of the 4th, 6th, 9th, and 12th months of the year. Use the SC1120-CDP, Corporation
Declaration of Estimated Income Tax, to file and pay your quarterly Estimated Tax payments by paper.
Pay online using our free online tax portal, MyDORWAY, at dor.sc.gov/pay� Select Business Income Tax
Payment to get started. Do not mail the SC1120-CDP if you pay online.
If filing by paper, include your name, FEIN, tax year, and SC1120-CDP in the memo of the check. Do
not send cash. Mail payment with the SC1120-CDP to: SCDOR, Corporate Voucher, PO Box 100153,
Columbia, SC 29202. Complete the SC2220, Underpayment of Estimated Tax by Corporations, to
compute the underpayment penalties. Forms are available at dor.sc.gov/forms�
Penalties and Interest
Calculate penalty and interest using the Penalty and Interest Calculator at dor.sc.gov/calculator� Avoid
penalties and interest by filing and paying the tax when it is due.
● South Carolina Code Section 12-54-210 requires a corporation to keep books, papers,
memoranda, and records; plus render statements, make returns, and comply with all regulations
as the SCDOR prescribes. If a corporation fails to comply with the provisions of this section,
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a failure to comply penalty must be added, not to exceed $500 for the period covered by the
return in addition to other penalties provided by law.
● If a corporation fails to file its tax return when due (including any extension), it will be subject
to a failure to file penalty. The penalty will be 5% of the tax due per month, up to 25% total. The
penalty is calculated on the tax due on the return less any amounts paid on or before the due
date. The SCDOR may also assess a late filing penalty of up to $500.
● If a corporation owes $15,000 or more in connection with any SCDOR return, it must file and pay
electronically for that return and any future tax return filed with the SCDOR. If it does not file
and pay electronically, it will be assessed a $500 penalty.
● If a corporation fails to pay tax by the due date, a failure to pay penalty must be added to the tax.
The penalty will be 0.5% of the tax per month, up to 25% total.
● If a corporation underpays its tax liability and the underpayment is due to negligence or
disregard of regulations, it will be charged a negligence penalty of 5% of the underpayment plus
50% of the interest payable.
● If a corporation substantially understates its tax, it will be charged a substantial understatement
penalty of 25% of the understatement. A substantial understatement is the greater of 10%
of the tax liability or $10,000. In the case of an S Corporation or personal holding company, a
substantial understatement is the greater of $5,000 or 10% of the tax liability.
● If the corporation fails to pay the tax due, it will be charged interest at the rate provided under
IRC Sections 6621 and 6622. The interest will be calculated on the full amount of tax or portion
thereof, not including penalties, from the time the tax was due until paid in its entirety.
Amended Returns
Amended returns
To amend a previously-filed SC1120 or SC1120S, complete a new form and check the Amended Return
box on the front of the return. Include an explanation of the adjustments, a copy of the federal 1120X,
and a copy of the original return filed with the amended return. If you do not provide a copy of your
original return, the SCDOR cannot process your amended return. You must submit your amended
return within 36 months of the date the original return was filed or due to be filed, whichever is later,
as required by SC Code Section 12-54-85, available at dor.sc.gov/policy�
Amended South Carolina return required based on IRS audit
Once the IRS has completed its audit, a corporation has 180 days to file an amended return with the
SCDOR. The signed and dated IRS forms 4549 and 870 must be included with the amended return,
along with the 1574 letter, if available. Include an explanation of the adjustments and a copy of the
original return with the amended return. If you do not provide a copy of your original return, we cannot
process your amended return.
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Consolidated Returns
A consolidated return is a single Income Tax return filed by two or more corporations subject to
Corporate Income Tax. On a consolidated return, income or loss is determined separately for each
corporation and combined and reported on a single return for the controlled group. Credits and credit
carry-forwards are used on a consolidated basis.
An S Corporation may NOT participate in a consolidated return.
A consolidated return may be filed on behalf of:
● a parent and one or more substantially-controlled subsidiaries, or
● two or more corporations under substantially the entire control of the same interest.
Substantial control means the ownership by one corporation of 80% or more of the total combined
voting power of all classes of stock of the other corporations. Check the Consolidated Return box on
the front of your SC1120 and complete Schedule J and Schedule M as required. The Schedule M must
have all three parts completed. The totals should match the figures reported on page 1 and page 2 of
the return�
All corporations included in a consolidated return or combined return must use the same accounting
year.
If you elect to file a consolidated return, you must make your election on an original, timely-filed return.
You cannot change your election to file a consolidated return after the return is filed. Once an election
is made, it must be adhered to on all subsequent returns until the SCDOR grants permission to file
separate returns�
A multi-state corporation must compute and use a separate apportionment ratio in arriving at the
South Carolina taxable income and License Fee for each entity included in the consolidation.
The following is an example of a multi-state consolidated return:
Income Calculation
SC Taxable Income
Corporation Taxable Income SC Apportionment Ratio (Column 1 x Column 2)
A 45,000 80% 36,000
B (15,000) 90% (13,500)
Total SC Taxable Income 22,500
License Fee Calculation
License Fee
Corporation Capital SC Apportionment Ratio (SC Capital x .001 + 15)
Not less than $25
A 150,000 80% 135
B 1,000 90% 25
Total SC License Fee 160
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Include a pro forma federal return rather than the actual federal return if
● the federal consolidated group is not the same as the South Carolina consolidated group, or
● the federal consolidated group does not apply because only one of the corporations included in
the federal filing is subject to South Carolina tax
Attach a copy of pages 1-6 of the federal return and the federal Form 851, Affiliations Schedule.
Definitions
● Tangible property is real property and corporeal personal property. It does not mean money,
bank deposits, shares of stock, bonds, credits, evidences of debt, choses in action, or evidence of
an interest in property.
● Intangible property is all property other than tangible property.
● Income year is the calendar year or the fiscal year used as the basis to compute federal net
income�
● Fiscal year is an income year ending on the last day of any month other than December.
● Received for the purpose of the computations of net income under this chapter means received
and accrued�
● Received and accrued is defined based on the method of accounting used to compute net
income�
● Foreign corporation is any corporation chartered outside of South Carolina.
● Domestic corporation is a corporation charted in South Carolina.
● Property having actual situs in this state includes real property physically located within this
state and personal property of a bona fide resident of this state wherever situated.
● Resident corporation is a corporation whose principal place of business is located within this
state�
● Non-resident corporation is any corporation other than a resident corporation.
All of the various terms defined in Sections 7701-7703 of the Internal Revenue Code have the same
meaning for South Carolina Income Tax purposes, unless a different meaning is clearly required.
Policy Resources
The SCDOR issues policy documents on a variety of tax related topics. Some documents which may be
of interest to corporate taxpayers are:
● New Jobs Credit: County Ranking - SC Information Letter
● Policy Document Index - SC Information Letter
● New Jobs Credit: Computation and Examples - SC Revenue Ruling #99-5
● Per Capita Income of Counties - SC Information Letter
● Quarterly Interest Rate - SC Information Letter
● Single Member Limited Liability Company - SC Revenue Ruling #98-11
● Nexus for Income Tax - (Geoffrey Implications) - SC Revenue Ruling #08-1
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● Public Law 86-272 and South Carolina Income Tax - SC Revenue Ruling #97-15
● License Fee Based on Capital Stock and Paid-In or Capital Surplus: Computation and Proration
Questions - South Carolina Revenue Ruling #05-11
● Active Trade or Business Income - Annual Election by Pass-Through Entity to Pay Tax at Entity
Level - Revenue Ruling #21-15
● South Carolina's Guide to IRC Conformity form 2021-2023 (Publication)
● SC Tax Incentives for Economic Development (Publication)
Policy documents are available at dor.sc.gov/policy�
Use Tax
If you buy goods from out-of-state and bring those goods into South Carolina, you owe 6% state Use
Tax (or applicable rate if you operate in a county with a local tax). The Use Tax is complementary to the
Sales Tax. If you paid Sales Tax to another state, you are allowed a credit for the tax you already paid
equal to the amount due in South Carolina�
For example, if you bought goods in North Carolina and paid 6% Sales Tax there, you would not owe
Use Tax to South Carolina. If you operate in a South Carolina county with a local tax, then you would
owe the additional local tax due in that county.
For corporations, Use Tax is usually paid under the corporation's Retail License or Use Tax Registration
Number. If your corporation makes regular purchases of goods from out-of-state for use in South
Carolina, you should obtain a Use Tax Registration Number. For assistance, contact the SCDOR at
1-803-896-1350 or RegistrationforTaxes@dor.sc.gov� Learn more about Use Tax at dor.sc.gov/tax/use�
SC1120 C Corporation Instructions
Line Instructions
Check boxes
● Check all boxes that apply.
● If you have a change of Address, Accounting Period, or Officers, mark the appropriate box.
● Check the Extension box to let us know if you filed a federal or state extension.
● Check the appropriate box to let us know if the return is an Initial Return, Consolidated Return,
Amended Return, or if the return Includes Disregarded LLCs� You must complete Schedule M
if this is a consolidated return� You must complete Schedule L if this return includes disregarded
LLCs. If you do not include a complete Schedule M or Schedule L, you could receive Failure to
File notices for the corporations or LLCs not included.
● Check the box if the corporation is Merged, Reorganized, or if the return is the Final return for
the corporation.
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● Check the box to let us know if the corporation was included in a federal consolidated return for
this tax year. If Yes, enter the name and FEIN of the federal parent company. Include pages 1-6
of the consolidated federal return and a copy of the federal Form 851, Affiliations Schedule, with
your return.
Total gross receipts
Enter the amount from Line 1c of your federal Form 1120 or 1120S. If there is no entry for Line 1c,
enter total income from all other sources�
Total cost of depreciable personal property in SC
Enter the total original cost of furniture, fixtures, machinery, equipment, and vehicles. Do not deduct
depreciation.
If filing a consolidated return, enter the total cost of these respective amounts for all members of the
consolidated group. Attach a schedule showing the separate amounts for each corporation.
County or counties in SC where the corporation's property is located
Enter the county or counties in SC where the corporation's property is located.
Audit location
Enter the street address of the audit location.
PART I: Computation of Income Tax Liability
Line 1
Enter the amount of taxable income from your federal return.
Line 2
Complete Schedule A and B, page 2, and enter the net adjustment amount from Line 12.
Some of the additions to federal taxable income are:
● Interest on other states' obligations. Interest on obligations from this state and any of its political
subdivisions is exempt�
● State and local Income Taxes, state and local Franchise taxes measured by net income, any
Income Taxes, or any taxes measured by or with respect to net income.
● South Carolina law allows the same depletion as IRC Sections 611 through 613. A corporation
that allocates or apportions income has the option of adding back depletion before
apportionment and of deducting depletion after apportionment on mines, oil and gas wells,
and other natural deposits located in this state. The allowances may not exceed 50% of the net
income apportioned to South Carolina.
● Any taxpayer who is reporting income or deducting expenses over a time period as a result of a
change of accounting method or accounting year must continue to report income and deduct
expenses in the manner provided in the Internal Revenue Code and approved by the IRS. When
the authorized adjustment period expires, continue to report the remaining income or expenses
for South Carolina purposes until they have been fully reported or deducted.
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● Transitional adjustment on items of prepaid income or deferred expenses. See the instructions
on Accounting Method and attach a schedule showing how the addition was derived.
● Federal net operating losses are additions to income.
● Reduce the basis of certain property to the extent the Headquarters Credit (SCH. TC-8) is
claimed. Make an addition for the resulting reduction in depreciation.
● Reduce the basis of qualifying property to the extent the Economic Impact Zone or Capital
Investment Credit (SCH. TC-11) is claimed. Make an addition to federal taxable income for the
resulting reduction in depreciation.
● You are not allowed a deduction for donations to a nonprofit South Carolina corporation
providing child care services if you claim a Child Care Program Credit (SC SCH. TC-9) for the
donations. Add the disallowed deductions to federal taxable income.
● South Carolina does not recognize the federal election for special taxation of income from
qualifying shipping activities provided in IRC Section 1354. Add back the income taxed at the
special rate�
Some of the deductions from federal income are:
● The gross-up of dividends received from a Foreign Corporation located outside of the US
required by a domestic US corporation electing the foreign tax credit as provided for in IRC
Section 78 is subtracted from federal net taxable income.
● Reduction in depreciable property due to investment credit election will result in an ordinary
expense for South Carolina purposes�
● If a corporation disposes of an asset that has a different South Carolina basis and federal basis,
adjust South Carolina gain or loss to reflect the difference in the basis of the assets.
● Transitional adjustment for items of prepaid income or deferred expenses. (See the instructions
for Accounting Method and attach a schedule showing how the deduction was derived).
● If a taxpayer is reporting income from the liquidation of a corporation under IRC Section 337
using the installment method of reporting or from an installment sale under IRC Section 453 and
the corporation has previously reported all the gain for South Carolina tax purposes, then reduce
South Carolina income by the amount of the installment gain.
● Subtract any salaries and wages that were reduced due to the federal job credit.
● Dividends received from foreign corporations (located outside of the US) that are included
in federal taxable income may be reduced in the same manner that dividends received from
domestic corporations are deducted under IRC Section 243.
● South Carolina does not recognize the limitation on business interest expense required by IRC
Section 163(j). Interest expense not allowed on the federal return is subtracted in arriving at
South Carolina taxable income�
● For tax years beginning January 1, 2023 through December 31, 2028, South Carolina does
not tax income from a grant or subgrant received for the purpose of making investments in
broadband infrastructure, provided the grant or subgrant is included in the corporation’s taxable
income as defined under the IRC.
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Special rules for certain federal items:
● South Carolina does not recognize any of the federal special depreciation allowances, including
bonus depreciation, provided in IRC Section 168(k) through (n) or regional benefits provided
in IRC Sections 1400 through 1400U-3. A taxpayer electing one or more of the special or
regional depreciation allowances must have a separate depreciation schedule for South
Carolina purposes. Add back the difference between federal depreciation and South Carolina
depreciation for the tax year in which the property was placed in service. You will be able
to claim an additional depreciation deduction for each remaining tax year of the property's
depreciable life�
● South Carolina does not recognize the deferrable and ratable inclusion of either income arising
from business indebtedness under IRC Section 108(i) or original issue discount of high yield
discount obligations under IRC Section 163(e)(5)(F). The income is reported to South Carolina
immediately. Income deferred for federal purposes is deductible in subsequent years for South
Carolina purposes since it was already taxed in the first year.
Line 5
South Carolina recognizes the federal NOL with modifications as provided in SC Code Section 12-6-
1130(4). South Carolina follows the federal NOL carry-forward period, but no carry-backs are allowed.
Add the federal NOL back on Schedule A and subtract the South Carolina NOL on Schedule B. Do not
make an adjustment on Schedule G for the NOL.
On line 5, enter the NOL carryover from the previous years as a positive number. Subtract the NOL
carryover (line 5) from the South Carolina net income (line 4) to arrive at the South Carolina income
subject to tax (line 6).
Line 8
If a corporation has receipts from invoices issued by a seller directly to an unrelated purchaser outside
the United States (foreign trade receipts) and wishes to defer state Income Tax, use the TD-1 to
compute the deferred tax. Also include any deferred LIFO recapture tax based on IRC Section 1363.
Line 10
Enter the amount of nonrefundable credits being taken against Income Tax this year. This amount
comes from Line 13 of the SC1120TC�
Attach the SC1120TC and all supporting tax credit schedules to your tax return.
Line 12
South Carolina recognizes the shareholders deferral of foreign trade receipts by a Domestic
International Sales Corporation (DISC). Multiply the deferred federal foreign trade income by 5% to
determine the South Carolina deferred Income Tax liability.
The interest for South Carolina is calculated by using the same interest rate used on the federal form.
Enter only the interest determined on Line 12 of the SC1120. Also, enter the interest applicable to
deferred tax on Line 8�
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Also include on Line 12 any interest attributable to payments received on installment sales of certain
timeshares and residential lots. Write "Section 453(I)(3)" to the left of the amount. Attach a statement
showing the computations.
Line 14(a)
To get credit for withholding done on your behalf, attach all federal 1099s and I-290s. South Carolina
K-1s or partnership statements will not be accepted as withholding verification. If you are a fiscal year
taxpayer, include a schedule of amounts withheld on a monthly basis.
Line 14(b)
Enter the total of the prior year overpayments and all estimated payments made during the year.
Line 17
See the instructions on page 7 or use the Penalty and Interest Calculator, available at
dor.sc.gov/calculator.
Line 19
If Line 15 is larger than Line 18, enter the overpayment amount and indicate how it is to be applied.
PART II: Computation of License Fee
The License Fee is required for:
● every corporation organized under the laws of the state of South Carolina
● every corporation organized to do business under the laws of another state, territory, or country
that is qualified to do business in South Carolina
● any other corporation required to file an Income Tax return that is listed as not being exempt
The following companies are exempt from License Fee requirements:
● corporations organized for tax exempt purposes and exempt income form Income Tax pursuant
to IRC Section 501
● volunteer fire departments and rescue squads
● cooperatives under Chapters 45 and 47 of Title 33 of the South Carolina Code of Laws
● building and loan associations or credit unions conducting a strictly mutual business
● insurance, fraternal, beneficial, or mutual protection insurance companies
● foreign corporations whose entire income is not included in gross income for federal Income Tax
due to any treaty obligation of the United States
● homeowners' associations within the definition of IRC Section 528(c)(1) and filing federal Form
1120-H
● community development entities certified by the Department of Treasury
● political organizations as defined in IRC Section 527
● REITS (real estate investment trusts) organized as trusts and taxed under IRC Section 857 (not
REITS organized as corporations and taxed under Subchapters C or S of the Internal Revenue
Code)
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Compute the License Fee on the total capital stock and paid in or capital surplus. Paid in or capital
surplus means the entire surplus of a corporation other than earned surplus.
On a consolidated return, the License Fee is measured by the total capital and paid in surplus for each
corporation considered separately without offset for investment of one corporation in the capital
or surplus of another corporation in the consolidated group. Do not file separate returns paying the
License Fee if you are filing a consolidated return for Income Tax purposes.
The License Fee for a bank holding company, a savings and loan holding company, or an insurance
holding company is measured by the capital stock and paid in surplus of the holding company minus
the capital stock and paid in surplus of any bank, savings and loan association, or insurance company
that is a subsidiary of the holding company.
A corporation may prorate its License Fee when its tax year is changed and a return of less than 12
months is required. This proration applies only to short periods due to a change in accounting period
and does not apply to short periods due to initial or final returns. The prorated License Fee cannot be
less that $25 per return. A License Fee is not generally required on final returns. Refer to SC Revenue
Ruling #05-11, available at dor.sc.gov/policy�
Express, street railway, navigation, waterworks, power, light, gas, telegraph, and telephone companies
must file a SC1120U, Public Utility Tax Return. Electric Cooperatives must file a CL-4, Annual Report of
Electric Cooperative Corporation Property and Gross Receipts. The License Fee for these companies is
based on gross receipts from regulated business and South Carolina property used in the conduct of
business instead of capital stock and paid in capital.
Line 20
Enter the total capital and paid in surplus. If the corporation is subject to apportionment, complete
Schedule E and enter the amount�
Line 21
Multiply the total capital and paid in surplus by 0.001, then add $15. The License Fee cannot be
less than $25. For a consolidated taxpayer, apply the above computation to each corporation in the
consolidated group and then total them. The License Fee for each of the corporations cannot be less
than $25.
Line 22
Enter the amount of nonrefundable credits being taken against the License Fee tax this year. This
amount comes from Part II, Column C of your SC1120TC. Attach your SC1120TC and all supporting tax
credit schedules to your tax return.
Line 24
Enter any amount paid with an extension or transferred from the declaration of taxes.
Line 25
Enter the total payments for the License Fee.
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Line 27
See the instructions on page 7 or use the Penalty and Interest Calculator, available at
dor.sc.gov/calculator�
Line 29
If line 25 is larger than line 28, enter the overpayment amount and indicate how the overpayment is to
be applied�
Getting a refund? Direct deposit is fast, accurate, and secure!
With direct deposit, you:
● get your refund deposited directly into your bank account, giving you the fastest access to your
refund�
● help save tax dollars�
● get your refund sooner.
Under Refund Options, select Direct Deposit and enter your bank information.
You must enter complete and correct account information. If you are requesting direct deposit of your
refund and your account information is not complete and correct, we will mail a paper check to the
address listed on your return.
You cannot have the funds directly deposited into an account located outside the United States.
Enter your account information
1� Check checking or savings account.
2� Enter your 9-digit routing transit number (RTN). The RTN should begin with 01 through 12 or 21
through 32. Do not use a deposit slip to verify the RTN.
3� Enter your bank account number (BAN). The BAN contains 17 or fewer alphanumeric digits and
contains no hyphens, spaces, special symbols, or check numbers. Enter the BAN from left to
right�
Schedules A through G
Schedule A: Additions to Federal Taxable Income
Refer to the instructions for line 2.
Schedule B: Deductions from Federal Taxable Income
Refer to the instructions for line 2.
Schedule C: Summary of Income Tax Credit
Complete the SC1120TC and enter the totals. You must attach your SC1120TC along with all supporting
tax credit schedules. See the SC1120TC, available at dor.sc.gov/forms, for more information on tax
credits�
Schedule D: Annual Report
Complete all information requested, including a list of directors and principal officers. Only officers
listed on Schedule D will be considered authorized to act on behalf of the corporation.
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Schedule E: Computation of License Fee of Multi-State Corporation
Enter the total capital and paid in surplus on line 1. Multiply line 1 by the apportionment ratio from
Schedule H-1, H-2, or H-3, as appropriate.
Schedule F: Income Subject to Direct Allocation
Definitions:
● Income property not connected with the business means income other than income from
property connected with the business.
● Principal place of business means the domicile of a corporation. If none of the business of
the corporation is conducted in the state of domicile, the SCDOR will determine, based on the
available evidence, the principal place of business.
● Related expenses means any cost incurred, directly or indirectly, in connection with the
investment for the production of allocable income.
Line 1
Allocate interest from intangible property not connected with the taxpayer's business, less all related
expenses, to the corporation's principal place of business.
Line 2
Allocate dividends received from corporate stock not connected with the taxpayer's business after the
dividends received deduction under IRC Section 243 and less all related expenses, to the corporation's
principal place of business�
Line 3
Allocate rents received from the lease or rental of real or tangible personal property and royalties from
tangible property that were not used in or connected with the taxpayer's business, less all related
expenses, to the state where the property is located.
Line 4
Allocate gains or losses from the sale of real property to the state where the property is located.
Line 5
Allocate gains or losses from the sale of intangible personal property not connected with the taxpayer's
business, less all related expenses, to the corporation's principal place of business.
Line 6
Allocate any other investment income, less all related expenses, which is not included in the net
apportionable income because it is unrelated to the taxpayer's business, to the state where the
business situs of the investment is located. Apportion the income if the business situs of the investment
is partly within and partly outside of South Carolina.
Attach an explanation for income that is not allocated to South Carolina.
Schedule G: Computation of Taxable Income of Multi-State Corporations
Only multi-state businesses complete Schedule G.
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Line 1
Enter the amount of total net income as reconciled from your SC1120, page 1, line 3.
Line 2
Enter the amount of income directly allocated from Schedule F, line 7.
Line 3
Subtract line 2 from line 1. This is your net income subject to apportionment.
Line 4
Multiply line 3 by the appropriate ratio from H-1, line 3; H-2, line 7; or H-3, line 3.
Line 5
Enter the amount of income directly allocated to South Carolina from Schedule F, line 8.
Line 6
Add line 4 and line 5. This is your total South Carolina net income. Enter this amount on your SC1120,
line 4�
Apportionment
Taxpayers doing business in South Carolina and other states must apportion the income remaining after
allocation using the sales factor on Schedule H-1, the gross receipts factor on Schedule H-2, or one of
the special methods on Schedule H-3.
Sales and gross receipts include, but are not limited to:
● receipts from the sale or rental of property to customers in the ordinary course of the taxpayer's
business, including inventory.
● receipts from the sale of accounts receivable acquired in the ordinary course of business.
Receivables must be for services, sales, or rental in the ordinary course of the taxpayer's
business. The accounts receivable must have been created by the taxpayer or a related party.
The related party includes a person bearing a relationship to the taxpayer as described in IRC
Section 2673.
● receipts from the use of intangible property in the state, including royalties from patents,
copyrights, trademarks, and trade names.
● net gain from the sale of property used in the trade or business. Property used in the trade or
business means property subject to the allowance for depreciation, real property used in the
trade or business, and intangible property used in the trade or business which is:
■ not property that would be includible in the inventory of the business if on hand at the end
of the tax year, or
■ held by the business primarily for sale to customers in the ordinary course of the trade or
business�
● receipts from services if the entire income-producing activity is within the state. If the income-
producing activity is performed partly within and partly outside of South Carolina, sales are
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attributable to the state to the extent of the income-producing activity performed within South
Carolina�
● receipts from the sale of intangible property which cannot be attributed to any particular state
or states are excluded from the numerator and the denominator of the factor�
● the proportion of receipts from the operation of cable systems, video services, and direct
satellite services that are attributable to the cost of performing services in South Carolina. Costs
of performing the service include acquiring programming distribution rights and constructing
and maintaining distribution infrastructure.
Sales and gross receipts do not include:
● repayment, maturity, or redemption of the principal of a loan, bond, or mutual fund or
certificate of deposit or similar marketable instrument.
● the principal amount received under a repurchase agreement or other transaction properly
characterized as a loan.
● proceeds from the issuance of the taxpayer's stock or from sale of treasury stock.
● damages and other amounts received as the result of litigation.
● property acquired by an agent on behalf of another.
● tax refunds and other tax benefit recoveries.
● pension reversions�
● contributions to capital, except for sales of securities by securities dealers.
● income from forgiveness of debt�
● amounts realized from exchanges of inventory not recognized by the Internal Revenue Code.
Refer to SC Code Section 12-6-2295, available at dor.sc.gov/policy, for more information about sales
and gross receipts�
Schedule H-1: Computation of Sales Ratio
A multi-state taxpayer must use a sales-only factor to apportion to South Carolina the net income
remaining after allocation if their principal business in South Carolina is:
● manufacturing or any form of collecting, buying, assembling, or processing goods and materials
within South Carolina or
● selling, distributing, or dealing in tangible personal property within South Carolina.
The sales factor is a fraction in which the numerator is the total sales of the taxpayer in South Carolina
during the tax year and the denominator is the total sales of the taxpayer everywhere during the tax
year. The term sales in South Carolina includes sales of goods, merchandise, or property received by a
purchaser in South Carolina. Goods are considered received by the purchaser after all transportation
has been completed. Direct delivery into South Carolina by the taxpayer to a person designated by a
purchaser is considered delivery to the purchaser in South Carolina.
Sales of tangible personal property to the US government are not included in the numerator or the
denominator of the sales factor. Only sales for which the US government makes direct payment to the
seller based on the terms of a contract are considered sales to the US government�
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Line 1
Enter the sales attributable to South Carolina.
Line 2
Enter the total sales from everywhere.
Line 3
Divide line 1 by line 2 and enter the result. This is your South Carolina apportionment percentage using
the sales factor method�
If a sales factor does not exist, apportion income (loss) to the corporation's principal place of business.
Schedule H-2: Computation of Gross Receipts Ratio
If a taxpayer's principal profits or income are derived from sources other than manufacturing,
producing, collecting, buying, assembling, processing, selling, distributing, or dealing in tangible
property, the taxpayer must apportion income to South Carolina using a gross receipts factor. This is the
ratio of gross receipts from within the state during the income year to the total gross receipts of such
year within and outside the state.
Examples of corporations subject to gross receipts method of apportionment include:
● construction contractors
● service companies other than public service corporations
● corporations primarily engaged in rental real estate activities
Public service corporations, utilities, and electric cooperatives should use Schedule H-3 to apportion
income�
Line 1
Enter your total gross receipts from within South Carolina.
Line 2
Enter amounts included in line 1 that were directly allocated to South Carolina.
Line 3
Subtract line 2 from line 1. These are your adjusted South Carolina gross receipts.
Line 4
Enter your total gross receipts from everywhere.
Line 5
Enter amounts included in line 4 that were directly allocated to South Carolina or to other states.
Line 6
Subtract line 5 from line 4. These are your total adjusted gross receipts.
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Line 7
Divide line 3 by line 6 and enter the result. This is your South Carolina apportionment percentage using
the gross receipts method�
Schedule H-3: Computation of Ratio
Public service corporations (defined in SC Code Section 12-6-2310) apportion income remaining after
the allocation using the following factors:
● Railroad companies use the following fractions:
■ Numerator: Railway operating revenue from business done within South Carolina during a
taxable year.
■ Denominator: Total railway operating revenue from all business done by the taxpayer.
Records must be kept in accordance with the Uniform System of Accounts prescribed by the
Interstate Commerce Commission. If the SCDOR determines accounting records of a taxpayer
do not accurately reflect the division of revenue by state lines, the SCDOR may adopt rules
and regulations to determine averages to reasonably approximate the proportion of interstate
revenue actually earned upon lines in South Carolina.
Railway operating revenue from business done within South Carolina means railway operating
revenue from business wholly within South Carolina, plus the equal mileage proportion within
South Carolina of each item of railway operating revenue from the interstate business of the
taxpayer.
Equal mileage proportion means the proportion of the distance of movement of property
and passengers over lines in South Carolina to the total distance of movement of property and
passengers over lines of the taxpayer receiving the revenues.
Interstate business means railway operating revenue from the interstate transportation of
persons or property into, out of, or through South Carolina.
● Motor carriers of property and passengers use the following fraction:
■ Numerator: Vehicle miles within South Carolina during the taxable year.
■ Denominator: Total vehicle miles everywhere during the taxable year.
● Telephone service companies use the following fraction:
■ Numerator: Gross receipts in South Carolina during the taxable year.
■ Denominator: Total gross receipts everywhere.
Gross receipts in South Carolina includes gross revenues derived from services rendered wholly
within South Carolina, plus the portion of the company's interstate revenue attributable to South
Carolina, based on the Federal Communications Standard Classification Accounts.
● Pipeline companies use the following fraction:
■ Numerator: Revenue ton miles, revenue barrel miles, or revenue cubic foot miles within
South Carolina during the tax year.
■ Denominator: Total revenue ton miles, revenue barrel miles, or revenue cubic foot miles
everywhere during the tax year.
Ton mile is one ton of solid property transported one mile.
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Barrel mile is one barrel of liquid property transported one mile.
Cubic foot mile is one cubic foot of gaseous property transported one mile.
● Airline companies use the following fraction:
■ Numerator: Revenue tons loaded and unloaded in South Carolina during the tax year.
■ Denominator: Revenue tons loaded and unloaded everywhere during the tax year.
Revenue ton is a short ton (2,000 pounds) computed by using a standard weight of 190 pounds
per passenger (including free baggage) multiplied by the number of passengers loaded and
unloaded, plus the tons of animal, express, and freight loaded and unloaded.
● Shipping lines use the following fraction:
■ Numerator: Revenue tons loaded and unloaded in South Carolina during the year.
■ Denominator: Revenue tons loaded and unloaded everywhere during the year.
Schedules J through N
Schedule J: Corporations Included in Consolidated Return
Each corporation included in a consolidated return must complete Schedule J.
Schedule L: Disregarded LLCs Included in Return
Each single-member limited liability company (LLC) that is not taxed as a corporation is not regarded as
an entity separate from its owner for tax purposes. Provide on Schedule L the name and FEIN of each
disregarded LLC doing business in or registered with South Carolina and included in the corporation's
South Carolina return. Include additional Schedule Ls as needed. Disregarded LLCs that are doing
business in or are registered with South Carolina may receive a Failure to File Notice from the SCDOR if
they are not included on the Schedule L.
Schedule M: Consolidated Return Affiliations Schedule
A consolidated return may be filed by a parent corporation and subsidiaries over which it has
substantial control (at least 80% ownership) or by two or more corporations under substantially the
entire control of the same interest. S Corporations and corporations not subject to South Carolina
Corporate Income Tax may not join in a consolidated return.
Your election to file a consolidated return or separate returns must be made on an original, timely-filed
return� You cannot amend the return to change the consolidated group�
On Schedule M, check the Yes or No box to indicate if the parent corporation is included in the
consolidated return. Provide the parent corporation's name and FEIN whether the parent corporation is
included In the consolidated return or not�
Each corporation in the consolidated group computes its South Carolina income or loss, apportionment
ratio, and License Fee separately. Enter the information on the Schedule M for each corporation
included in the consolidated return. Include additional Schedule Ms as needed. Corporations not
included on the Schedule M are not considered part of the consolidated return and may receive a
Failure to File Notice from the SCDOR if they do not file a separate return.
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Schedule N: Property Information
In Column 1, enter the value of property in South Carolina at the beginning of the tax year. In Column
2, enter the value of the property in South Carolina at the end of the tax year. In each instance, include
only South Carolina property and use the original value of the property, disregarding depreciation or
expensing�
Line 1
Enter the value of all land�
Line 2
Enter the value of all buildings�
Line 3
Enter the value of all machinery and equipment.
Line 4
Enter the value of all construction in progress.
Line 5
Enter the value of all tangible personal property not entered above.
Total
Enter the totals of line 1 through line 5 for each column�
Description of line property: Individually list and describe each item of property included on line 5 and
enter its beginning and end of the year values.
S Corporation Instructions
Filing requirements
Generally, a corporation with a valid S election doing business in South Carolina must file the SC1120S,
S Corporation Income Tax Return. An S Corporation that has met the Transitional Rule requirements and
elected to be treated as a C Corporation must file the SC1120, C Corporation Income Tax Return. Public
utilities must file the SC1120U, Public Utility Tax return.
Beginning with the 2021 tax year, a qualifying S Corporation, including an LLC taxed as an S Corporation,
can elect to have its active trade or business income taxed at the entity level instead of the shareholder
level�
A qualifying S Corporation is one whose owners are all:
● individuals
● estates
● trusts
● entities not included in SC Code Section 12-6-530 through 12-6-540
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● entities not included in SC Code Section 12-6-550, or
● other entities not exempt from South Carolina Income Tax
This election is made annually at the S Corporation level on the SC1120S on behalf of all shareholders.
Mark the box on page 1 of the SC1120S to make your Active Trade or Business election.
Electing qualified S Corporations must use the I-435, Active Trade or Business Income For Electing
Partnerships and S Corporations, to identify active trade or business income and calculate the tax due.
S Corporations will use the SC1120S K-1, Shareholder's Share of South Carolina Income, Deductions,
Credits, Etc., to report to each shareholder their share of the active trade or business income taxed at
the S Corporation level.
For more information, SC Code Sections are available at dor.sc.gov/policy�
Line Instructions
Check boxes
Check all boxes that apply:
● If you have a change of Address, Accounting Period, or Officers, mark the appropriate box.
● Check the Extension box to indicate that you filed a federal or state extension.
● Check the box to make the Active Trade electionor Business �
● Check the appropriate box to let us know if the return anis Initial Return ReturnAmended , ,
or if the return QSSSsincludes or Disregarded LLCs � Complete Schedule L if the return includes
QSSSs or Disregarded LLCs�
● Check the box theif corporation is ReorganizedMerged , if or , the return is the Finalreturn for
the corporation.
● Check the box to let us know if the corporation has any shareholders who are nonresidents of
South Carolina�
● Total gross receipts: Enter the amount from Line 1c of your federal Form 1120 or 1120S. If there
is no entry for Line 1c, enter your total income from all other sources.
● Total cost of depreciable personal property in SC: Enter the total original cost of furniture,
fixtures, machinery, equipment, and vehicles. Do not deduct depreciation.
● County or counties in SC where the corporation's property is located: Enter the county or
counties in SC where the corporation's property is located.
● Audit location: Enter the street address of the audit location.
● Audit contact: Enter the name and phone number of the audit contact�
● Number of nonresident shareholders: Enter the number of shareholders who are not residents
of South Carolina�
● Number of nonresident shareholders with an I-309 affidavit: Enter the number of nonresident
shareholders who filed an I-309 affidavit.
● Number of nonresident shareholders included in composite return: Enter the number of
nonresident shareholders who are included in a composite return�
24 SCDOR | C & S Corporation Instructions
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PART I: Computation of Income Tax Liability
Line 1
Enter the total of federal Schedule K line 1 through line 12 income (loss) amounts.
Line 2
Enter the net amount of South Carolina adjustments to all of the income (loss) amounts included in
the line 1 total. Additions and subtractions from federal taxable income include the same adjustments
possible for a C Corporation. It also includes:
● excess net passive income under IRC Section 1375 when taxed on the federal return,
● built in gains, and
● certain capital gains under IRC Section 1374 when taxed on the federal return.
Line 4
Multi-state S Corporations must use Schedule F and Schedule G to allocate and apportion income. Enter
the total South Carolina net income amount from line 6 of Schedule G and line 4 of the SC1120S� If not
a multi-state S Corporation, enter the amount from line 3.
Line 5
S Corporations electing to pay tax on active trade or business income at the entity level enter the active
trade or business income from line 14 of the I-435.
Line 6
Enter the 3% tax on active trade or business income calculated on line 17 of the I-435.
Line 7
Subtract income on line 4 that is taxed to the shareholders. This is generally the South Carolina income
amount from line 4 minus the Active Trade or Business income amount from line 5. However, any
income subject to tax on the federal 1120S under IRC Sections 1374 and 1375 would not be subtracted
on this line�
Line 8
Subtract line 5 and line 7 from line 4. This is the amount of income taxed to the S Corporation.
Line 9
Multiply line 8 by 5%. South Carolina imposes a Corporate Tax on the excess net passive income and
built-in gains added to federal income. Also include any deferred LIFO recapture under IRC Section
1363�
Line 11
Enter any nonrefundable tax credits taken at the S Corporation Income Tax level. Tax credits taken by
the S Corporation are not passed through to the shareholders on their SC1120S K-1s.
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Line 13(a)
Attach all federal 1099s and I-290s. South Carolina K-1s or partnership statements will not be accepted
as withholding verification. If you are a fiscal year taxpayer, include a schedule of amounts withheld
on a monthly basis. Only include amounts withheld on the S Corporation's behalf. Do not include any
amounts you reported on the SC1120S-WH.
Line 13(b)
Include the total of prior year overpayments and estimated payments.
Line 16
See the instructions on page 7 or use the Penalty and Interest Calculator, available at
dor.sc.gov/calculator�
Line 18
If line 14 is larger than line 17, enter the overpayment amount and indicate how it is to be applied
REMINDERS:
● S Corporations do not have a net operating loss carryover. The losses flow through to the
shareholders each year.
● Deferral of income and tax on foreign trade receipts flow through to the shareholders of an S
Corporation. Interest is also paid by the shareholders. If applicable, give a schedule of details.
PART II: Computation of License Fee
An S Corporation pays the same License Fee as a C Corporation. For tax purposes, Qualified Sub-chapter
S Subsidiaries (QSSSs) are treated as part of the S Corporation parent, and the parent corporation pays
the Corporate License Fee. List the Qualified Sub-chapter S Subsidiaries (QSSS) on Schedule L of the
SC1120S�
Line 19
Enter the total capital and paid in surplus. If the corporation is subject to apportionment, complete
Schedule E and enter the amount�
Line 20
Multiply the total capital and paid in surplus by 0.001, then add $15. The License Fee cannot be less
than $25.
Line 21
Enter the amount of nonrefundable credits being taken against the License Fee tax this year. This
amount comes from Part II, Column C of your SC1120TC.
Attach your SC1120TC and all supporting tax credit schedules to your tax return.
Line 23
Enter any amount paid with an extension or transferred from the declaration of taxes.
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Line 24
Enter the total payments for the License Fee.
Line 26
See the instructions on page 7 or use the Penalty and Interest Calculator, available at
dor.sc.gov/calculator�
Line 28
If line 24 is larger than line 27, enter the overpayment amount and indicate how the overpayment is to
be applied�
Getting a refund? Direct deposit is fast, accurate, and secure!
With direct deposit, you:
● get your refund deposited directly into your bank account, giving you the fastest access to your
refund�
● help save tax dollars�
● get your refund sooner.
Under Refund Options, select Direct Deposit and enter your bank information.
You must enter complete and correct account information. If you are requesting direct deposit of your
refund and your account information is not complete and correct, we will mail a paper check to the
address listed on your return.
You cannot have the funds directly deposited into an account located outside the United States.
Enter your account information
Check checking or savings account.
1� Enter your 9-digit routing transit number (RTN). The RTN should begin with 01 through 12 or 21
through 32. Do not use a deposit slip to verify the RTN.
2� Enter your bank account number (BAN). The BAN contains 17 or fewer alphanumeric digits and
contains no hyphens, spaces, special symbols, or check numbers. Enter the BAN from left to
right�
Schedules for SC1120S
Schedules A through N
Except as indicated below, follow the SC1120 Instructions for C Corporations.
Schedule SC-K Worksheet
This schedule is used to make South Carolina adjustments to federal Schedule SC- K items and to show
the amount of these items that are apportioned or allocated to South Carolina.
● Column B amounts are the same as shown on the federal Schedule K�
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● In Column C, account for differences between South Carolina and federal law.
● Column C adjustments include the same adjustments possible for a C Corporation. The items
appearing at numbers 1 through 10 on the federal Schedule K are generally classified as business
related using South Carolina apportionment and allocation rules.
● Column D includes the total of Column B and Column C�
If the S Corporation has multi-state operations, all Column D items are directly allocated on Schedule
F or apportioned according to the ratio from Schedule H-1, H-2, or H-3. Column E amounts are not
taxable to South Carolina� Column F amounts are taxable to South Carolina�
The total of line 1 through line 12d of Schedule SC-K Worksheet, Column F should equal the amount
shown on line 4 of page 1�
Line 11 through line 12d
If the S Corporation has multi-state operations, multiply the amounts in Column D by the
apportionment ratio determined in Schedule H to arrive at the same amount in Column F.
Nonrefundable credits
Distribute to shareholders in proportion to shares held.
Information to be furnished to shareholders
Shareholders who are residents of South Carolina must be provided with the total amount of their
proportionate share of the following items:
1� South Carolina adjustments from Schedule SC-K Worksheet, Column C, and
2� Schedule SC-K Worksheet Column E amounts that are allocated or apportioned to states other
than South Carolina�
This total amount is the shareholder's S Corporation modification to federal taxable income.
Shareholders who are nonresidents of South Carolina must be provided with their share of the
Schedule SC-K Worksheet, Column F items. These amounts are reportable to the state of South
Carolina�
S Corporations receiving rental and other passive activity income and losses based on IRC Section 469,
from investments located within and outside of South Carolina, must furnish shareholders with details
for proper reporting of these amounts. Similar information must be furnished to shareholders who did
not materially participate in the trade or business or an S Corporation with multi-state operations. (Such
shareholders may have nondeductible passive losses which cannot offset interest and other business-
related portfolio income apportioned to South Carolina.)
Schedule L: QSSSs and Disregarded LLCs Included in Return
For tax purposes, a Qualified Sub-chapter S Subsidiary (QSSS), as defined in IRC Section 1361(b)(3)(B),
is not regarded as an entity separate from the S Corporation that owns stock of the QSSS. On the top
portion of the Schedule L, provide each QSSS's name and FEIN.
Each single-member LLC that is not taxed as a corporation is not regarded as an entity separate from its
owner for tax purposes. On the bottom portion of the Schedule L, provide the name and FEIN of each
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disregarded LLC doing business in or registered with South Carolina and included in the corporation's
South Carolina return. List only those disregarded LLCs doing business in or registered with South
Carolina and included in the corporation's South Carolina return.
Include additional Schedule Ls as needed.
QSSSs and disregarded LLCs that are doing business in or are registered with South Carolina may receive
a Failure to File Notice from the SCDOR if they are not included on the Schedule L.
Nonresident Shareholder Withholding
S Corporations are required to annually withhold 5% of the SC taxable income of shareholders who are
nonresidents of South Carolina. Pay the Income Tax withheld to the SCDOR with the
SC1120S-WH by the 15th day of the third month following the end of the tax year. By the same date,
you must provide nonresident shareholders a 1099-MISC with South Carolina Only written at the top
showing the amounts of income and tax withheld. Attach a schedule to the SC1120S-WH showing the
name, address, tax identification number, South Carolina taxable income, and tax withheld for each
nonresident shareholder�
S Corporations requesting an extension of time to file the SC1120S must estimate the South Carolina
taxable income of nonresidents and file the SC1120S-WH by the 15th day of the third month following
the end of the year, paying 5% withholding on the estimated taxable income. There is no extension of
time for filing the SC1120S-WH or paying the amount due.
Nonresident shareholders must attach a copy of the 1099-MISC to their Income Tax returns to claim
credit for the withholding. A nonresident shareholder may provide the S Corporation with an I-309
affidavit agreeing to be subject to the jurisdiction of the SCDOR and the South Carolina Courts for
purposes of determining and collecting South Carolina tax, interest, and penalties which may be due.
Find the I-309 affidavit at dor.sc.gov/forms. The S Corporation is not required to withhold Income
Tax on behalf of a shareholder who submits an I-309 affidavit. Attach the completed affidavits to the
SC1120S-WH. If any affidavit has previously been filed it should not be resubmitted. S Corporations with
no South Carolina taxable income are not required to file the SC1120S-WH.
S Corporations that report the income of their nonresident shareholders on a composite return are not
required to withhold tax, file the SC1120S-WH, or file affidavits.
Composite Filing
A composite return is a single nonresident Individual Income Tax return (SC1040 with Schedule NR
attached) filed by an S Corporation that computes and reports the income and tax of two or more
nonresident shareholders. The return is due by the 15th day of the fourth month following the
shareholders' taxable year end. Any tax due is paid along with filing the return.
The S Corporation does not need to withhold on behalf of any shareholder participating in a composite
return. For more information, see SC Revenue Procedure #17-2, available at dor.sc.gov/policy.
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The tax due on a composite return is subject to the declaration of Estimated Tax rules. Estimated Tax
is paid by the S Corporation, not by the shareholders participating in the composite return. See the
SC1040ES and instructions, available at dor.sc.gov/forms to learn more�
The quickest, easiest way to pay Estimated Tax is using our free online tax portal, MyDORWAY, at
dor.sc.gov/pay� Select Individual Income Tax Payment to get started. No additional form or paperwork
is required if you pay online.
Enter the name, address, and FEIN of the S Corporation in the heading of the composite return. Do not
use "Composite Return for" or "Shareholders" in the name. Mark the Composite Return box� Select
the Single filing status on the front of the SC1040. Two methods are available for calculating tax on a
composite return�
1� Compute each participating shareholder's Income Tax separately as if the shareholder were
separately reporting income on a nonresident return; or
2� Compute each participating individual's entire share of SC income without considering
deductions.
Under either method, add the individual liabilities together to arrive at a total tax. Attach a schedule
showing the separate computations. Add the separate tax amounts and enter the total on line 6 of the
SC1040�
A shareholder that participates in a composite return will not receive the benefit of any federal
deductions and will owe tax at South Carolina's top marginal tax rate for Individual Income Tax for the
tax year on any income that does not qualify as active trade or business income, unless the shareholder
completes the I-338, Composite Return Affidavit, stating that they have no other income taxable to
South Carolina. See the I-348, Composite Filing Instructions, available at dor.sc.gov/forms, for more
information.
To extend the time allowed for filing a composite return, file the SC4868, Request for Extension of Time
to File, using the name and FEIN of the S Corporation. Mark the Composite Filer box� Do not use the
SC1120T to extend the composite return. The tax due must be estimated and paid along with filing the
extension by the 15th day of the fourth month following the end of the shareholders' taxable year.
The fastest, easiest way to request your filing extension is by paying your balance due on our free
online tax portal, MyDORWAY, at dor.sc.gov/pay� Select Individual Income Tax Payment to get started�
Your payment automatically submits your filing extension request. No additional form or paperwork is
required�
Example: Multi-State S Corporation:
XYZ Corporation, a South Carolina S Corporation, does business in South Carolina and Georgia. XYZ has
the following income and deductions:
● dividend income of $1,000, received from corporate stock not connected with the XYZ's business
● long-term capital gain of $2,000 from the sale of South Carolina real estate
● ordinary business income of $60,000
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XYZ Corporation has two shareholders: Mr. X, who resides in South Carolina and owns 70% of the stock
and Ms. Y, who resides in Georgia and owns 30%.
The dividend of $1,000 is allocated to the respective domiciles of the individual taxpayers because it is
not connected with the taxpayer's business.
The long-term capital gain from the sale of real estate of $2,000 is allocated to the state it is located in
(South Carolina).
The apportionment rates for the two states have been computed to be 60% for South Carolina and
40% for Georgia. The ordinary business income is apportioned per South Carolina law based on
apportionment rates.
TRANSACTION 60% MR. X'S MS. Y'S MS. Y'S
AMOUNT APPORTIONED ALLOCATED SC SHARE SC SHARE OTHER
TRANSACTIONS TO SC (70%) (30%) STATE
Ordinary business income 60,000 36,000 25,200 10,800
Dividend income 1,000 1,000 700 0 300
Long-term capital gain 2,000 2,000 1,400 600
Note: Dividends not connected with the taxpayer's business are allocated to the domicile of an
individual taxpayer. Dividends connected with the taxpayer's business are subject to apportionment.
63,000
< 0 >
63,000
38,700
< 38,700 >
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Dividend Income 1,000 1,000 700
Long-term Capital Gain 2,000 2,000 2,000
3,000
2,700
63,000
3,000
60,000
36,000
2,700
38,700
60,000 60,000 24,000 36,000
1,000 1,000 300 700
2,000 2,000 2,000
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38,000*
11,400
0
11,400
570
0
570
*38,700 from line 7 of the SC1120S less $700 directly allocated dividends.
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Mr. X XYZ Corporation
70
42,000 16,800 25,200
700 700
1,400 1,400
27,300
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Ms.Y XYZ Corporation
30
X
18,000 7,200 10,800
300 300
600 600
11,400
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Reminders
Filing online is faster and more accurate.
Visit dor.sc.gov/biz-services for more information about your electronic filing options. You can file your
SC1120 or SC1120S as well as your federal corporate return electronically in a single transmission using
third-party preparation software.
Getting a refund? Direct deposit is fast, accurate, and secure!
With direct deposit, you:
● get your refund deposited directly into your bank account, giving you the fastest access to your
refund�
● help save tax dollars�
● get your refund sooner.
Have a balance due?
Paying online is quick and easy! Use our free online tax portal, MyDORWAY.
● To pay by ACH Debit:
■ log into the MyDORWAY account and select Make a Payment under your Corporate Tax
Account, or
■ visit dor.sc.gov/pay and select Business Income Tax Payment�
● To pay by ACH Credit:
■ get started by logging in to your MyDORWAY account, select the More tab, then select
Request ACH Credit Banking Instructions.
● You can mail your payment with the SC1120-V, Corporate Income Tax payment Voucher. Make
your check payable to the SCDOR. Include your name, FEIN, tax year, and SC1120-V in the
memo� Do not send cash�
Copies of previously filed returns
If you used a paid preparer to file your return, your preparer should have a copy of your return.
The SCDOR has a six year retention period for previously filed returns.
Questions? We're here to help!
If you received a letter or notice, call the specific number provided on the letter or notice. If you have a
general question or concern, you should first call 1-844-898-8542.
SCDOR Taxpayer Service Centers are located across the state. Visit dor.sc.gov/contact/in-person for
locations and hours.
Penalty and Interest
If you need help calculating your penalty and interest, a Penalty and Interest Calculator is available at
dor.sc.gov/calculator�
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