Use Form 1120-S to report the income, gains, losses, deductions, credits, etc., of a domestic corporation or other entity for any tax year covered by an election to be an S corporation.

Form 1120-S is the U.S. Income Tax Return for S Corporations. It’s an informational document that lets the Internal Revenue Service (IRS) know how much income your business made and how much tax …

Dec 18, 2025 · Form 1120-S is the vehicle through which an S corporation declares its income, losses, deductions, and credits for the tax year. It's the instrument by which the corporation calculates its …

Download or print the 2025 Federal Form 1120-S (U.S. Income Tax Return for an S Corporation) for FREE from the Federal Internal Revenue Service.

2 days ago · Learn how to file Form 1120-S for your S corp, from gathering records and paying yourself a salary to issuing K-1s and meeting deadlines.

Oct 9, 2025 · Learn how to file IRS Form 1120-S, including deadlines, shareholder reporting, common mistakes, and state tax rules for S corporations.

Jan 9, 2025 · Learn to complete Form 1120S, including detailed instructions on how to answer the questions on Schedule B.

Do not file this form unless the corporation has filed or is attaching Form 2553 to elect to be an S corporation. Go to www.irs.gov/Form1120S for instructions and the latest information. Do not file this …

Feb 14, 2026 · Learn the IRS Form 1120-S instructions to ensure you file the form correctly with our complete guide for S-Corp income tax returns.

Understand what is Form 1120S, the crucial tax return for S corporations. Learn filing deadlines, key sections, and common mistakes to avoid.