Form 1120-S
U.S. Income Tax Return for an S Corporation
Annual return for S corporations to report income, deductions, and other financial information to the IRS.
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About Form 1120-S — U.S. Income Tax Return for an S Corporation
Form 1120-S is the annual federal tax return for S corporations — businesses that have elected pass-through taxation under Subchapter S of the Internal Revenue Code. Like partnerships, S corporations do not pay federal income tax at the corporate level. Instead, income, losses, deductions, and credits pass through to shareholders who report them on their individual returns via Schedule K-1. Form 1120-S is due March 15 of the following year, with a 6-month extension available on Form 7004. Companies must have previously filed Form 2553 to elect S corporation status.
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