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                                                                                                        Department of the Treasury
                                                                                                        Internal Revenue Service
Instructions for Form 8866

(Rev. November 2018)
Interest Computation Under the Look-Back Method for Property Depreciated Under 
the Income Forecast Method

Section references are to the Internal Revenue in which the property was placed in           property was depreciated under the 
Code unless otherwise noted.                   service.                                      income forecast method and the entity 
                                                                                             is not subject to the look-back method at 
                                               Exception. A tax year is not a 
                                                                                             the entity level for that property, you 
General Instructions                           recomputation year for the property if, 
                                                                                             must file this form for your tax year that 
                                               for each year before the recomputation 
                                                                                             ends with or includes the end of the 
Future Developments                            year, the actual income from the 
                                                                                             entity's recomputation year. The 
For the latest information about               property is within 10% of the estimated 
                                                                                             pass-through entity will provide on 
developments related to Form 8866 and          income taken into account in 
                                                                                             Schedule K-1 the information you need 
its instructions, such as legislation          determining the depreciation deduction 
                                                                                             to complete this form.
enacted after they were published, go to       for the property under the income 
IRS.gov/Form8866.                              forecast method.
                                                                                             Change of Taxpayer
What's New                                     Additional Costs                              If the taxpayer deducting depreciation 
The tax rate used for the interest                                                           under the income forecast method 
computation for individuals,                   Any costs incurred after the property 
                                                                                             changes prior to the recomputation 
corporations, and certain pass-through         was placed in service (that is not treated 
                                                                                             year, the taxpayer as of the end of the 
entities has changed. See the                  as separate property—see below) are 
                                                                                             recomputation year will be responsible 
instructions for line 6, later.                taken into account by discounting (using 
                                                                                             for the payment of interest, if any, due 
                                               the federal mid-term rate determined 
                                               under section 1274(d) as of the time the      for any year in which the property was 
                                                                                             depreciated under the income forecast 
Purpose of Form                                cost was incurred) the cost to its value 
                                                                                             method. Generally, only the taxpayer 
Use Form 8866 to figure the interest due       as of the date the property was placed 
                                                                                             that had depreciated property under the 
or to be refunded under the look-back          in service. However, you may elect not 
                                                                                             income forecast method in a year that 
method of section 167(g)(2) for property       to apply this discounting rule to any 
                                                                                             an overpayment occurred may request 
placed in service after September 13,          property.
1995, that is depreciated under the                                                          a refund of interest on the overpayment.
income forecast method as described in         Separate property. The following 
section 167(g).                                costs are treated as separate property.       Filing Instructions
                                               Any costs incurred related to any 
  The income forecast method                   property after the 10th tax year after the    Interest You Owe (or No 
generally is limited to depreciation of:       tax year the property was placed in           Interest Is To Be Refunded to 
Motion picture films,                        service.                                      You)
Video tapes,                                 Any other costs incurred if they are 
                                                                                             If you owe interest, or no interest is to be 
Sound recordings,                            significant and give rise to a significant 
                                                                                             refunded to you, attach Form 8866 to 
Copyrights,                                  increase in the income from the property 
                                                                                             your income tax return. You do not have 
Books, and                                   which was not included in the estimated 
                                                                                             to sign Form 8866 and the paid preparer 
Patents.                                     income from the property.
                                                                                             section does not have to be completed.
Who Must File                                  Pass-Through Entities                         For taxpayers other than 
General Rule                                   A pass-through entity (partnership, S         partnerships, include any interest due in 
You generally must file Form 8866 to           corporation, or trust) that is not closely    the amount to be entered for total tax 
figure interest under the look-back            held must apply the look-back method          (after credits and other taxes) on your 
method for each recomputation year for         at the entity level to any property for       return (for example, 2018 Form 1040, 
property placed in service after               which substantially all of the gross          line 15; or 2018 Form 1120, Schedule J, 
September 13, 1995, that you                   income is from U.S. sources. A                line 9d, etc.). Next to the entry space, 
depreciate under the income forecast           pass-through entity is considered             write “From Form 8866” and the amount 
method.                                        closely held if, at any time during any       of interest due.
                                               tax year for which there is income 
Exception. The look-back method                related to the property, 50% or more (by      For partnerships, write “From Form 
does not apply for any property that had       value) of the beneficial interests in the     8866” and any interest due in the 
an unadjusted basis (total capitalized         entity is held (directly or indirectly) by or bottom margin of the tax return, and 
cost) of $100,000 or less at the end of        for five or fewer persons. For this           attach a check or money order for the 
the recomputation year.                        purpose, rules similar to the constructive    full amount payable to “United States 
                                               ownership rules of section 1563(e)            Treasury.” Write the partnership's 
Recomputation Year                             apply.                                        employer identification number (EIN), 
                                                                                             daytime phone number, and “Form 
A recomputation year is generally the                                                        8866 Interest” on the check or money 
3rd and 10th tax years after the tax year        If you are an owner of an interest in a 
                                                                                             order.
                                               pass-through entity in which any 

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Interest To Be Refunded to You              Form 8866 shows interest to be                Foreign Address
If interest is to be refunded to you, do    refunded to you, you must:                    Enter the information in the following 
not attach Form 8866 to your income tax       1. File an amended tax return               order: city, province or state, and 
return. Instead, file Form 8866             showing $0 interest from Form 8866            country. Follow the country's practice for 
separately with the IRS at the applicable   and                                           entering the postal code. Please do not 
address listed below.                         2. File the corrected Form 8866             abbreviate the country name.
Individuals:                              separately (but do not write “Amended” 
                                            at the top of the form because this is the    Identifying Number
  Department of Treasury                    first Form 8866 that you will file            If you are an individual, enter your social 
  Internal Revenue Service                  separately for this recomputation year).      security number. Other filers must use 
  Philadelphia, PA 19255-0001               Follow the filing instructions, earlier, and  their EIN.
All others:                               the amended return instructions for your 
                                            tax return.                                   Recomputation year column
  Department of Treasury                                                                  Enter the month and year for the 
  Internal Revenue Service                  If the original Form 8866 shows 
                                            interest to be refunded to you and the        recomputation year listed at the top of 
  Cincinnati, OH 45999-0001                                                               this form.
                                            corrected Form 8866 shows interest you 
  Complete the Signature section on         owe, you must:
Form 8866 following the instructions for      1. File the corrected Form 8866             Columns (a) and (b)
the Signature section of your income tax    separately (with “Amended” written at         Enter at the top of each column the 
return. If you file a joint return, the     the top) showing $0 interest to be            ending month and year for:
signature of both spouses is required on    refunded and                                  Each tax year prior to the 
Form 8866. A paid preparer also must                                                      recomputation year in which you 
complete the Signature section. If            2. File an amended income tax 
additional Forms 8866 are needed (to        return and attach a copy of the               depreciated property under the income 
show more than 2 prior tax years), sign     corrected Form 8866. Follow the filing        forecast method to which this form 
only the first Form 8866.                   instructions, earlier, and the amended        applies and
                                            return instructions for your tax return.      Any other tax year affected by such 
  File Form 8866 by the date you are                                                      years.
required to file your income tax return     Attachments                                   Note. If there are more than 2 prior tax 
(including extensions). Keep a copy of 
                                            If you need more space, attach separate 
Form 8866 and any attached schedules                                                      years, attach additional Forms 8866 as 
                                            sheets to the back of Form 8866. Put 
for your records.                                                                         needed. On the additional Forms 8866, 
                                            your name and identifying number on           enter your name, identifying number, 
                                            each sheet.
Filing a Corrected Form                                                                   and tax year. Complete lines 1 through 
                                                                                          8 (as applicable), but do not enter totals 
8866                                                                                      in column (c). Enter totals only in 
You must file a corrected Form 8866         Specific Instructions
                                                                                          column (c) of the first Form 8866.
only if the amount shown on line 6 for 
any prior year changes as a result of an    Recomputation Year
                                                                                          Line 1
error you made, an income tax               Fill in the recomputation year line at the 
examination, or the filing of an amended    top of the form to show the tax year for      Do not reduce taxable income or 
tax return.                                 which this form is being filed. If you were   increase a loss on line 1 by any 
                                            an owner of an interest in a                  carryback of a net operating loss, net 
  When completing line 1 of the             pass-through entity that has depreciated      section 1256 contracts loss, or capital 
corrected Form 8866, follow the             one or more properties under the              loss, except to the extent that carryback 
instructions on the form but do not enter   income forecast method, enter your tax        resulted from or was adjusted by the 
the adjusted taxable income from line 3     year that ends with or includes the end       redetermination of depreciation under 
of the original Form 8866. When             of the entity's recomputation year.           the income forecast method for 
completing line 5 of the corrected Form                                                   look-back purposes.
8866, do not include the interest due, if 
any, from line 10 of the original Form      Name                                          Note. The 2-year carryback rule does 
8866 that was included in your total tax    Enter the name shown on your federal          not apply to net operating losses arising 
when Form 8866 was filed with your tax      income tax return for the recomputation       in the tax years ending after 2017. An 
return.                                     year. If you are an individual filing a joint exception applies to farmers and 
If both the original and corrected        return, also enter your spouse's name         non-life insurance companies. See 
Forms 8866 show interest you owe, file      as shown on Form 1040.                        section 172(b) as amended by P.L. 
an amended income tax return following                                                    115-97, section 13302.
the filing instructions, earlier, and the   Address
amended return instructions for your tax    Enter your address only if you are filing     Line 2
return.                                     this form separately. Include the             In each column, show a net increase to 
If both the original and corrected        apartment, suite, room, or other unit         taxable income as a positive amount 
Forms 8866 show interest to be              number after the street address.              and a net decrease as a negative 
refunded to you, write “Amended” in the                                                   amount.
                                            P.O. Box
top margin of the corrected Form 8866, 
and file it separately following the filing Enter your box number instead of your           In figuring the net adjustment to be 
instructions, earlier.                      street address only if your post office       entered in each column on line 2, be 
If your original Form 8866 shows          does not deliver mail to your home.           sure to take into account any other 
interest you owe and the corrected                                                        income and expense adjustments that 

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may result from the increase (or           appropriate tax year and the                   a. In 2017 or earlier               35%
decrease) to depreciation under the        hypothetical tax would be recomputed           b. In 2018 or later                 21%
income forecast method (for example,       in the carryback/forward year. However, 
for an individual, a change to adjusted    the computation period for computing 
gross income may affect medical            interest on NOLs is different. See the 
expenses).                                 exceptions listed on lines 7 and 8           Lines 7 and 8
                                           below.
If there are no adjustments besides                                                     For the increase or decrease in tax for 
the look-back adjustments, the sum of      Note. The 2-year carryback rule does         each prior year, interest due or to be 
all line 2 amounts should be zero and      not apply to net operating losses arising    refunded must be computed at the 
reflected in column 2(c). If there are     in tax years ending after 2017. An           applicable interest rate and 
additional adjustments that result from    exception applies to farmers and             compounded on a daily basis, generally 
the application of the look-back, leave    non-life insurance companies. See            from the due date (not including 
column 2(c) blank and reflect the          section 172(b) as amended by P.L.            extensions) of the return for the prior 
amounts in the schedule below as           115-97, section 13302.                       year until the earlier of:
described in item 3.                                                                    The due date (not including 
                                                                                        extensions) of the return for the 
Include the following on an attached       Lines 4 and 5                                recomputation year, or
schedule.                                  Reduce the tax liability to be entered on    The date the return for the 
                                           lines 4 and 5 by allowable credits (other    recomputation year is filed and any 
1. Identify each property                  than refundable credits, for example,        income tax due for that year has been 
depreciated under the income forecast      the credit for taxes withheld on wages,      fully paid.
method to which this form applies.         the earned income credit, the additional 
2. For each property, report in            child tax credit, the credit for federal tax Exceptions
columns for each prior year: (a) the       paid on fuels, etc.), but do not take into   If a net operating loss, capital loss, 
amount of depreciation previously          account any credit carrybacks to the         net section 1256 contracts loss, or 
deducted based on estimated future         prior year in computing the amount to        credit carryback is being increased or 
income and (b) the amount of               enter on lines 4 and 5 (except to the        decreased as a result of the adjustment 
depreciation allowable for each prior      extent of carrybacks that resulted from      made to net income due to refiguring 
year based on actual income earned         or were adjusted by the redetermination      depreciation under the income forecast 
before the end of the recomputation        of depreciation for look-back purposes).     method, the interest due or to be 
year and estimated future income to be     Include on lines 4 and 5 any taxes (such     refunded must be computed on the 
earned after the recomputation year.       as alternative minimum tax) required to      increase or decrease in tax attributable 
Total the columns for each prior year      be taken into account in the                 to the change to the carryback only from 
and show the net adjustment to             computation of your tax liability (as        the due date (not including extensions) 
depreciation.                              originally reported or as redetermined).     of the return for the prior year that 
3. Identify any other adjustments                                                       generated the carryback and not from 
that result from a change in depreciation  Line 6                                       the due date of the return for the year in 
under the income forecast method and       Pass-through entities. Multiply the          which the carryback was absorbed. See 
show the amounts in the columns for the    amount on line 2 by the applicable           section 6611(f).
affected years so that the net             regular tax rate for each prior year         In the case of a decrease in tax on 
adjustment shown in each column on         shown in column (a) or (b). The              line 6, if a refund has been allowed for 
the attached schedule agrees with the      applicable regular tax rate is as follows.   any part of the income tax liability shown 
amounts shown on line 2.                                                                on line 5 for any year as a result of a net 
                                           1. Pass-through entities in which, at all 
                                                                                        operating loss, capital loss, net section 
An owner of an interest in a               times during the year, more than 50% of 
                                                                                        1256 contracts loss, or credit carryback 
pass-through entity is not required to     the interests in the entity are held by 
                                                                                        to such year, and the amount of the 
provide the detail listed in 1 and 2 with  individuals directly or through other 
                                                                                        refund exceeds the amount on line 4, 
respect to prior years. The entity should  pass-through entities. The rates for tax 
                                                                                        interest is allowed on the amount of 
provide the line 2 amounts with            years beginning:
Schedule K-1 or on a separate                                                           such excess only until the due date (not 
                                                                                        including extensions) of the return for 
statement for its recomputation year.         a. In 2000 or earlier         39.6%       the year in which the carryback arose.
Note. Taxpayers reporting line 2              b. In 2001                    39.1%
amounts from more than one                    c. In 2002                    38.6%       Note. If a different method of interest 
Schedule K-1 (or a similar statement)         d. In 2003 through                        computation must be used to produce 
must attach a schedule detailing by           2012                          35.0%       the correct result in your case, use that 
entity the net change to depreciation         e. In 2013 through                        method and attach an explanation of 
under the income forecast method.             2017                          39.6%       how the interest was computed.
                                              f. In 2018 or later           37.0%       Applicable Interest Rates
Line 3                                                                                  The overpayment rate designated under 
If line 3 results in a negative amount, it                                              Section 6621 is used to calculate the 
represents a look-back net operating       2. All other pass-through entities not       interest for both hypothetical 
loss (NOL). The adjustment in line 2       included in 1 above:                         overpayments and underpayments. The 
either created, increased, or decreased                                                 applicable interest rates are published 
the net operating loss. The change in                                                   quarterly in revenue rulings in the 
the amount of the net operating loss 
would be carried back or forward to the 

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Internal Revenue Bulletin available at              Table 1                           forecast method. Sections 6001 and 
IRS.gov.                                    Interest Rates for Non-corporate          6109 and their regulations require you 
                                                    Taxpayers                         to provide this information, including 
However, for depreciation deducted                                                    your identifying number, if this provision 
in tax years ending after August 5, 1997,    From   Through   Rate   Table     Page   applies to you. If you do not file Form 
an interest rate is determined for each     1/1/08  3/31/08     7%     67      621
interest accrual period. The interest       4/1/08  6/30/08     6%     65      619    8866, do not provide the information we 
accrual period starts on the day after the  7/1/08  9/30/08     5%     63      617    ask for, or provide fraudulent 
                                            10/1/08 12/31/08    6%     65      619    information, you may forfeit any refund 
return due date (not including              1/1/09  3/31/09     5%     15      569    of interest otherwise owed to you and 
extensions) for each prior tax year and     4/1/09  12/31/10    4%     13      567    be subject to other penalties.
ends on the return due date for the         1/1/11  3/31/11     3%     11      565
following tax year. The interest rate in    4/1/11  9/30/11     4%     13      567    You are not required to provide the 
effect for the entire interest accrual      10/1/11 12/31/11    3%     11      565    information requested on a form that is 
period is the overpayment rate              1/1/12  12/31/12    3%     59      613
                                            1/1/13  12/31/15    3%     11      565    subject to the Paperwork Reduction Act 
determined under section 6621(a)(1)         1/1/16  3/31/16     3%     59      613    unless the form displays a valid OMB 
applicable on the first day of the interest 4/1/16  12/31/16    4%     61      615    control number. Books or records 
accrual period.                             1/1/17  3/31/18     4%     13      567    relating to a form or its instructions must 
                                            4/1/18  9/30/18     5%     15      569    be retained as long as their contents 
Even though the interest rates 
                                                                                      may become material in the 
change quarterly, for look-back                     Table 2                           administration of any Internal Revenue 
purposes the interest rate stays the        Interest Rates for Corporate              law. Generally, tax returns and return 
same for the accrual period which is        Increases or Decreases in Tax of          information are confidential, as required 
generally one year. The applicable                  $10,000 or Less                   by section 6103. However, section 6103 
interest rates for non-corporate 
                                                                                      sometimes permits or requires us to 
taxpayers are shown in Table 1 (for          From   Through  Rate Table Page
interest accrual periods beginning after    1/1/08  3/31/08  6%    65  619            disclose this information.
Jan. 1, 2008).                              4/1/08  6/30/08  5%     63 617            We may give the information to the 
                                            7/1/08  9/30/08  4%     61 615
The applicable interest rates for           10/1/08 12/31/08 5%     63 617            Department of Justice and to other 
corporate taxpayers for the first $10,000   1/1/09  3/31/09  4%     13 567            federal agencies, as provided by law. 
                                            4/1/09  12/31/10 3%     11 565            We may give it to cities, states, the 
are shown in Table 2. The applicable        1/1/11  3/31/11  2%     9  563            District of Columbia, and U.S. 
interest rates for corporate taxpayers for  4/1/11  9/30/11  3%    11  565            commonwealths or possessions to carry 
amounts in excess of $10,000 are            10/1/11 12/31/11 2%    9   563
shown in Table 3.                           1/1/12  12/31/12 2%    57  611            out their tax laws. We may give it to 
                                            1/1/13  12/31/15 2%    9   563            foreign governments because of tax 
                                            1/1/16  3/31/16  2%    57  611            treaties they have with the United 
Line 9                                      4/1/16  12/31/16 3%    59  613            States. We also may disclose this 
Additional interest to be refunded for      1/1/17  3/31/18  3%    11  565            information to federal and state 
periods after the due date of the return,   4/1/18  9/30/18  4%    13  567
                                                                                      agencies to enforce federal nontax 
if any, will be computed by the IRS and                                               criminal laws and to combat terrorism.
included in your refund. Report the                 Table 3 
amount on line 9 (or the amount             Interest Rates for Corporate              The time needed to complete and file 
refunded by the IRS if different) as        Increases or Decreases in Tax             this form will vary depending on 
interest income on your income tax                  Exceeding $10,000                 individual circumstances. The estimated 
return for the tax year in which it is                                                burden for individual taxpayers filing this 
received or accrued.                         From   Through  Rate     Table Page      form is approved under OMB control 
                                            1/1/08  3/31/08     4.5%   62      616    number 1545-0074 and is included in 
Line 10                                     4/1/08  6/30/08     3.5%   60      614    the estimates shown in the instructions 
                                            7/1/08  9/30/08     2.5%   58      612    for their individual income tax return. 
Corporations (other than S                  10/1/08 12/31/08    3.5%   60      614    The estimated burden for all other 
corporations) may deduct this amount        1/1/09  3/31/09     2.5%   10      564
(or the amount computed by the IRS if       4/1/09  12/31/10    1.5%    8      562    taxpayers who file this form is shown 
different) as interest expense for the tax  1/1/11  3/31/11     0.5%            below.
year in which it is paid or incurred. For   4/1/11  9/30/11     1.5%    8      562
                                            10/1/11 3/31/16     0.5%        
individuals and other taxpayers, this       4/1/16  12/31/16    1.5%   56      610    Recordkeeping             7 hr., 39 min.
interest is not deductible.                 1/1/17  3/31/18     1.5%   8       562    Learning about the law
                                            4/1/18  9/30/18     2.5%   10      564
                                                                                       or the form              1 hr., 33 min.
                                            Privacy Act and Paperwork Reduc-          Preparing, copying,
                                            tion Act Notice. We ask for the            assembling, and 
                                            information on this form to carry out the sending
                                            Internal Revenue laws of the United        the form to the IRS      2 hr., 56 min.
                                            States. We need it to ensure that you 
                                            are complying with these laws and to 
                                            figure and collect or refund the correct  If you have comments or suggestions 
                                            amount of interest. Section 167(g)        for making this form simpler, we would 
                                            provides special rules for computing      be happy to hear from you. You can 
                                            interest under the look-back method for   send us comments from IRS.gov/
                                            property depreciated under the income     FormComments. Or you can send us 

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your comments to: Internal Revenue  1111 Constitution Ave.; NW; IR-6526; the tax form to this office. Instead, see 
Service; Tax Forms and Publications Washington, DC 20224. Do not send    Filing Instructions, earlier.
Division: SE:W:CAR:MP:T;

                                    -5-






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