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IRSCorporate Tax (1120 Series)

Official form guide

Form 1120-SN: 1120 (Schedule N)

Form 1120‑SN (Schedule N) is an attachment to the S corporation income tax return (Form 1120‑S). It reports the corporation’s net operating loss (NOL) and other deductions that can be carried back or forward to other tax years.

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Form Overview

IRS Form 1120-SN - 1120 (Schedule N)

Form 1120‑SN (Schedule N) is an attachment to the S corporation income tax return (Form 1120‑S). It reports the corporation’s net operating loss (NOL) and other deductions that can be carried back or forward to other tax years.

The schedule captures the amount of the current‑year NOL, any NOL carrybacks, NOL carryforwards, capital loss carryovers, and the election to waive a carryback.

Risk Radar

Scan points
  • 1A single typo in the NOL figure can change the corporation’s tax liability for multiple years.
  • 2Incorrect NOL amount entered
  • 3Failing to elect a carryback when beneficial
  • 4Mismatched year references between Schedule N and prior returns
  • 5Omitting required supporting worksheets

Plain English

Think of Schedule N as the place where an S‑corp tells the IRS about losses it wants to apply to past or future tax returns. It lets the corporation reduce taxable income in other years, which can lower overall tax liability.

Submission Date

  • Filing date: 2026-01-05 08:10:41
  • Preparation window: collect IDs, supporting records, and signatures in advance.
  • Final review: verify names, dates, and required fields before submission.

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Glossary Terms

income taxliabilityfutureincome

Hover a term to preview the meaning.

What this form is for

  • Use when the S corp has a net operating loss or capital loss carryover.
  • Do not use if the corporation is a C‑corp; file the appropriate corporate loss schedule.
  • Check Form 1120‑S instructions if the corporation has no loss to report.

Form selector

Use this form or another form?

No NOL but other deductions

Only report income items

✓ Verify no loss exists

Form 1120‑S, Schedule K

C corporation with NOL

Different loss rules

✓ Use corporate form

Form 1120, Schedule K

Small business with no filing requirement

Payroll only

✓ No Schedule N needed

Form 941 or 940

Deadline or filing window

Schedule N must be filed with the Form 1120‑S by the return’s due date, generally March 15 for calendar‑year S corporations. Extensions push the deadline to the 15th day of the third month after the extended filing date.

  • —Current‑year loss | Sum of line 1‑3 | NOL amount | Verify totals match worksheet

Checklist

What you need before filling it out

1

Current‑year NOL

Prior‑year loss worksheet · Corporate tax return

⚠ Forgetting to include adjustments✕ High
2

Carryback election

Written election statement · Form 1120‑S attachment

⚠ Missing election✕ Medium
3

Carryforward balance

Prior‑year Schedule N · Prior return copy

⚠ Transposition error✕ High
4

Capital loss carryover

Schedule D of prior year · Prior return

⚠ Misclassifying as NOL✕ Medium

Before you submit

  1. 1Confirm Schedule N version matches 2024 Form 1120‑S{}}} edition date.
  2. 2filing_steps
  3. 3:
  4. 4known_limitations
  5. 5:
  6. 6after_file_steps
  7. 7:
  8. 8confusion_points
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  10. 10related_form_graph
  11. 11:
  12. 12source_log

Field map

Compact field-by-field guide

9 fields

Entity Info

2 items

Corporation Name and EIN

Full legal name of the corporation and its Employer Identification Number.

Requiredtext
Address and Date Incorporated

Current mailing address and date of incorporation.

Requiredtext

Income

3 items

Gross Receipts or Sales

Total revenue from business operations before deducting costs.

Requiredamount
Cost of Goods Sold

Direct costs attributable to producing goods sold by the corporation.

amount
Total Income

Gross receipts minus cost of goods sold and returns/allowances.

Requiredamount

Deductions

1 items

Total Deductions

Sum of all business expenses including compensation, rent, interest, taxes, and depreciation.

Requiredamount

Tax

2 items

Taxable Income

Total income minus total deductions.

Requiredamount
Total Tax

Tax calculated on taxable income using the applicable corporate tax rate, minus any credits.

Requiredamount

Signatures

1 items

Officer Signature

An authorized corporate officer must sign and date the return.

Requiredsignature
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Current form status
IRS

The latest edition of Schedule N is included with the 2024 Form 1120‑S package. Check the IRS website for any updates before filing.

What changed or needs a fresh check

  • Edition date: Verify the schedule is the 2024 version.
  • Fee: No separate fee for Schedule N; only the Form 1120‑S filing fee if applicable.
  • Mailing address: Use the address listed in the Form 1120‑S instructions for your state.
  • Electronic filing: Confirm your software supports Schedule N upload.
  • Signature: Only the Form 1120‑S signature is required.

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Quick Facts

Every S corporation that has an NOL, a capital loss carryover, or a net operating loss carryback/forward must file Schedule N with its Form 1120‑S.
The schedule captures the amount of the current‑year NOL, any NOL carrybacks, NOL carryforwards, capital loss carryovers, and the election to waive a carryback.
Schedule N is filed with the annual Form 1120‑S, which is due by the 15th day of the third month after the corporation’s tax year ends (generally March 15 for calendar‑year filers).
Attach Schedule N to the completed Form 1120{{}‑S and mail the package to the IRS address listed in the Form 1120‑S instructions for your state, or e‑file both forms together if you use approved software. If filing by paper, use the same envelope as the main return and include any required payment vouchers. If filing electronically, the schedule is uploaded as part of the Form 1120‑S package. Not clearly stated in the provided official source for electronic submission specifics.
Errors on Schedule N can misstate the amount of loss carried forward, causing over‑ or under‑payment of tax and triggering IRS penalties or delayed refunds.
1. Gather the corporation’s prior‑year tax returns and loss calculations. 2. Complete Part I for current‑year NOL and Part II for carrybacks/forwards, following the worksheet instructions. 3. Sign the attached Form 1120‑S; Schedule N does not require a separate signature. 4. Attach Schedule N to the Form 1120‑S and file by the deadline.

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Source transparency

Copyright & Licensing - US Government Forms

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Public DomainCreated by the U.S. federal government. Not subject to copyright (17 USC § 105). Freely copyable without restriction.
Public DomainCreated by the U.S. federal government. Not subject to copyright (17 USC § 105). Freely copyable without restriction.
Public DomainCreated by the U.S. federal government. Not subject to copyright (17 USC § 105). Freely copyable without restriction.
Public DomainCreated by the U.S. federal government. Not subject to copyright (17 USC § 105). Freely copyable without restriction.
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