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Form 1120 (2025): U.S. Corporation Income Tax Return

C corporations file Form 1120 to report their income, deductions and credits and to figure their federal income tax.

Form Details

Tax Year
2025
Revision
2025
Pages
6
File Size
340 KB (PDF)
Due Date
April 15, 2026 — extended: October 15, 2026
Category
Business — C Corporations

Due dates are for calendar-year filers, as published by the IRS for the 2025 tax year; a weekend or legal holiday moves a due date to the next business day.

Who Uses Form 1120

C corporations (including foreign corporations with U.S. income).

Schedules for Form 1120

  • Extension:Form 7004 — Application for Automatic Extension of Time To File Certain Business Income Tax, Information, and Other Returns
  • Amended Return:Form 1120-X — Amended U.S. Corporation Income Tax Return
  • E-File Authorization:Form 8879-CORP — E-file Authorization for Corporations

Zentavos can prepare and e-file this for you

A tax professional prepares and reviews your federal return — with Form 1120 when your return needs it — and files it electronically with the IRS.

See Tax Prep

Frequently Asked Questions

Download the blank Form 1120 PDF from this page. It is the official IRS file, delivered from IRS.gov — Zentavos does not change it. You can also find it on the IRS's page for Form 1120.

Yes. This is the 2025 revision of Form 1120, the version for tax year 2025.

Yes. Zentavos prepares and e-files federal tax returns for individuals and businesses, including the forms and schedules each return needs. If Form 1120 is part of your filing, our team can prepare it with your return — see Tax Prep to get started.

Source: IRS.gov — Form 1120