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The type and rule above prints on all proofs including departmental reproduction proofs. MUST be removed before printing.
Form 1045. You can apply for a quick refund by filing
Form 1045. This form results in a tentative adjustment of
tax in the carryback year.
If the IRS refunds or credits an amount to you from
Form 1045 and later determines that the refund or credit is
too much, the IRS may assess and collect the excess im-
mediately.
Generally, you must file Form 1045 on or after the date
you file your tax return for the NOL year, but not later than
1 year after the end of the NOL year. If the last day of the
NOL year falls on a Saturday, Sunday, or holiday, the form
will be considered timely filed if postmarked on the next
business day. For example, if you are a calendar year tax-
payer with a carryback from 2023 to 2021, you must file
Form 1045 on or after the date you file your tax return for
2023, but no later than December 31, 2024.
If you were affected by a federally declared disas-
ter, you may have additional time to file your Form
1045. For more information, go to IRS.gov/
DisasterTaxRelief.
Form 1040-X. If you do not file Form 1045, you can file
Form 1040-X to get a refund of tax because of an NOL
carryback. Generally, file Form 1040-X for the carryback
year within 3 years after the due date, including exten-
sions, for filing the return for the NOL year. For example, if
you are a calendar year taxpayer, you must generally file a
claim for refund because of an NOL carryback from 2020
by April 15, 2024 (3 years after the due date for the NOL
return).
Filing Form 1040-X does not extend the carry-
back period. See When To Use an NOL, earlier.
Attach a computation of your NOL using Form 1045,
Schedule A, and, if it applies, your NOL carryover using
Form 1045, Schedule B, discussed later.
Refiguring your tax. To refigure your total tax liability for
a carryback year, first refigure your AGI for that year. (On
Form 1045, use lines 10 and 11 and the “After carryback”
column for the applicable carryback year.) Use your AGI
after applying the NOL deduction to refigure income or de-
duction items that are based on, or limited to, a percent-
age of your AGI. Refigure the following items.
1. The special allowance for passive activity losses from
rental real estate activities.
2. Taxable social security benefits.
3. IRA deductions.
4. Excludable savings bond interest.
5. Excludable employer-provided adoption benefits.
6. The student loan interest deduction.
7. The tuition and fees deduction.
If more than one of these items apply, refigure them in
the order listed above, using your AGI after applying the
NOL deduction and any previous item. (If you are using
Form 1045, enter your NOL deduction on line 10. On
line 11, using the “After carryback” column, enter your AGI
refigured after applying the NOL deduction and after refi-
guring any above items.)
Next, refigure your taxable income. (On Form 1045, use
lines 12 through 15 and the “After carryback” column.)
Use your refigured AGI (Form 1045, line 11, using the “Af-
ter carryback” column) to refigure certain deductions and
other items that are based on or limited to a percentage of
your AGI. Refigure the following items.
•
The itemized deduction for medical expenses.
•
The itemized deduction for qualified mortgage insur-
ance premiums.
•
The itemized deduction for casualty losses.
•
Miscellaneous itemized deductions subject to the 2%
limit.
•
The overall limit on itemized deductions.
•
The phaseout of the deduction for exemptions.
Note. For tax years after 2017, the TCJA eliminated
the itemized deduction for miscellaneous itemized deduc-
tions subject to the 2% limit, the overall limit on itemized
deductions, and the deduction for exemptions.
Do not refigure the itemized deduction for charita-
ble contributions, even if you refigure your AGI.
Also, since you do not decrease your charitable
contributions, do not increase your charitable contribu-
tions carryover.
Finally, use your refigured taxable income (Form 1045,
line 15, using the “After carryback” column) to refigure
your total tax liability. Refigure your income tax, your alter-
native minimum tax, and any credits that are based on or
limited by your AGI, modified AGI (MAGI), or tax liability.
(On Form 1045, use lines 16 through 30, and the “After
carryback” column.) The earned income credit, for exam-
ple, may be affected by changes to AGI or the amount of
tax (or both) and, therefore, must be refigured. If you be-
come eligible for a credit because of the carryback, com-
plete the form for that specific credit (such as the EIC
Worksheet) for that year.
While it is necessary to refigure your income tax, alter-
native minimum tax, and credits, do not refigure your
self-employment tax and Additional Medicare Tax. For in-
formation about refiguring your net investment income tax
and credits, see the Instructions for Form 1045.
Deducting a Carryforward
If you carry forward your NOL to a tax year after the NOL
year, list your NOL deduction as a negative figure on
Schedule 1 (Form 1040), line 8a, for 2023, for the year to
which the NOL is carried. Estates and trusts, include an
NOL deduction on Form 1041, line 15b, for 2023.
You must attach a statement that shows all the impor-
tant facts about the NOL. Your statement should include a
computation showing how you figured the NOL deduction.
If you deduct more than one NOL in the same year, your
statement must cover each of them.
8 Publication 536 (2023)