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Economy · Tax deadlines

Partnership and S corporation returns due 2026

Mon, March 16, 2026 · United States · US

8 mo ago

Source

Calendar-year S corporations (Form 1120-S) and partnerships (Form 1065) file 2025 returns; March 15 falls on a Sunday.

Also on Mar 16, 2026

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  • 2026-09-25: added to 2026-03-16