Partnership and S corporation returns due 2026
Economy · Tax deadlines · Mon, March 16, 2026 · United States · US
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
| Date | Event | When |
|---|---|---|
| Mon, Mar 16, 2026 | Laylat al-Qadr (27th night) | 6 mo ago |
| Mon, Mar 16, 2026 | James Madison, born 1751 (275 years) | 6 mo ago |
| Mon, Mar 16, 2026 | NVIDIA GTC 2026 | 6 mo ago |
Source, method and history
- Source
- IRS
- How we know
- Date checked against the cited source (IRS).
- Recurs
- annual
- Feed
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- Changes
- 2026-09-25: added to 2026-03-16