Please Note: If a due date falls on a Saturday, Sunday, state holiday, or federal holiday, the due date will be extended to the following business day.

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S-Corporation Income Tax Return Due

yearly in March, starting from Sunday, March 15, 2026 - 00:00, forever

SC1120S return is due on or before the 15th day of the 3rd month following the close of the taxable year.

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