Where do I mail my 1120 US corporate income tax return?
James Craig
Published Apr 17, 2026
1120 Corporation Information and Instructions
| And the total assets at the end of the tax year are: | Use the following address: |
|---|---|
| Any amount | Department of the Treasury Internal Revenue Service Center Ogden, UT 84201-0012 |
| Any amount | Internal Revenue Service Center PO Box 409101 Ogden, UT 84409 |
What is an 1120 C corporation?
C corporations: C corps are separately taxable entities. They file a corporate tax return (Form 1120) and pay taxes at the corporate level. They also face the possibility of double taxation if corporate income is distributedto business owners as dividends, which are considered personal taxable income.
Where to find 1120x amended US corporation income tax return?
1120X Amended U.S. Corporation Income Tax Return Form 1120X (Rev. November 2016) Department of the Treasury Internal Revenue Service Amended U.S. Corporation Income Tax Return ▶ Information about Form 1120X and its instructions is at OMB No. 1545-0123 For tax year ending (Enter month and year.) Please Type or Print
What are the tax lines on Form 1120?
Line 21. Ordinary Business Income (Loss) Line 22a. Excess Net Passive Income and LIFO Recapture Tax Excess net passive income tax. LIFO recapture tax. Line 22b. Tax From Schedule D (Form 1120-S) Investment credit recapture tax. Interest due under the look-back method—Completed long-term contracts.
When to fill out Form 1120 for 2020 tax year?
The corporation must show its 2021 tax year on the 2020 Form 1120-S and take into account any tax law changes that are effective for tax years beginning after December 31, 2020. Name and Address Enter the corporation’s true name (as set forth in the charter or other legal document creating it) and address on the appropriate lines.
When to file Form 1120x for capital loss carryback?
A Form 1120X based on an NOL carryback, a capital loss carryback, or general business credit carryback generally must be filed within 3 years after the due date (including extensions) of the return for the tax year of the NOL, capital loss, or unused credit.
