Recommended by IRS

About Form, 1120 U.S. Corporation Income Tax Return

Information about Form, 1120 U.S. Corporation Income Tax Return, including recent updates, related forms and instructions on how to file.

Form 1120 PDF
PDF version of Form 1120.
Instructions for Form 1120 PDF
Instructions explaining how to file Form 1120.

1120 TY2024v5.5 release memo

1120 TY2024v5.5 release memo
Software Development
Software Developers

1120x TY2024v5.3 release memo

1120x TY2024v5.3 release memo
Software Development
Software Developers

1120x TY2023v5.4 release memo

1120 TY2023v5.4 release memo
Software Development
Software Developers

1120 TY2024v5.4 release memo

1120 TY2024v5.4 release memo
Software Development

1120x TY2025v2.0 release memo

1120 TY2025v2.0 release memo
Software Development
Software Developers

1120x TY2025v1.0 release memo

1120x TY2025v1.0 release memo
Software Development
Software Developers

1120x TY2024v5.2 release memo

Tax year 2024 Extensible Markup Language (XML) schemas and business rules for the following forms that include new tax year form(s) and tax law changes.
Software Development
Software Developers

1120x TY2024v4.0 release memo

1120 TY2024v4.0 release memo
Software Development
Software Developers

1120x TY2024v3.0 release memo

1120 TY2024v3.0 release memo
Software Development
Software Developers

Form 1120-POL – Final return

Form 1120-POL – Final Return (527 organizations).
General Information
Charities and Nonprofits