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About Form 1120-S, U.S. Income Tax Return for an S Corporation

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

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

Understanding Your CP262 Notice

CP 262 generates when IRS revokes a Subchapter S election.
General Information
Individuals

Understanding Your CP281 Notice

CP281 generates when we revoke a Qualified Subchapter S Subsidiary Election.
General Information
Individuals

Taxpayers need to report crypto, other digital asset transactions on their tax return

FS-2024-12, April 2024 — The Internal Revenue Service reminds taxpayers they must answer the digital asset question and report all digital asset related income when they file their 2023 federal income tax return. Taxpayers should also keep these reporting guidelines in mind for 2024.
General Information
Individuals

Electronic filing options for business and self-employed taxpayers

Electronic filing and payment options for business and self-employed taxpayers
Software Development
Software Developers

Understanding your CP288 notice

CP288 tells you we accepted your election or treatment as a Qualified Subchapter S Trust (QSST).
General Information
Businesses

Understanding Your CP290 Notice

CP290 tells you we approved your Electing Small Business Trust (ESBT) election.
General Information
Individuals

Corporations

Find tax information for corporations including compliance, filing requirements, the examination process, FATCA, uncertain tax positions and e-file.
General Information
Corporations

1120x TY2021v4.3 release memo

The Modernized e-File memo provides information to software developers and/or transmitters about the release of schemas and business rules for tax year 2021.
Software Development

E-help desk for tax professionals

Centralized toll-free number for the EPSS e-help Desk - assistors are ready to respond to questions and issues concerning e-products.
Software Development
Software Developers

SOI Tax Stats - Returns of active corporations - Table 27

Table 27: Returns of Active Corporations Corporatation Complete Report
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