Instructions for Schedule M-3 (Form 1120)›(Rev. June 2025)›General Instructions
Where To File
0625 Inst 1120 (Schedule M-3) (PDF) · 2026-10-03 edition · updated 2026-10-04 · United States
If the corporation is required to file (or voluntarily files) Schedule M-3 (Form 1120), the corporation must file Form 1120 (or Form 1120-C, if applicable) and all attachments and schedules, including Schedule M-3 (Form 1120) at the following address.
Department of the Treasury Internal Revenue Service Center Ogden, UT 84201-0012
Any U.S. consolidated tax group consisting of a U.S. parent corporation and additional includible corporations listed on Form 851, Affiliations Schedule, required to file Form 1120, that reports on Schedule L total consolidated assets at the end of the tax year that equal or exceed $10 million must file Schedule M-3 and must check box (2) Consolidated return (Form 1120 only), or box (3) Mixed 1120/L/PC group, as applicable, at the top of page 1 of Schedule M-3.
Cooperatives filing Form 1120-C, U.S. Income Tax Return for Cooperative Associations, that report total assets at tax year end that equal or exceed $10 million must file Schedule M-3 (Form 1120).
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