2026 Federal Tax Calendar
January
- Jan 15 — Individuals: Final 2025 estimated tax payment (Form 1040-ES)
February
- Feb 2 — Businesses: Provide W-2s & applicable 1099s to recipients
- Feb 2 — Individuals: File & pay 2025 return to avoid Jan 15 estimated-tax penalty
March
- Mar 2 — Farmers & Fishermen: File & pay 2025 return (if no Jan 15 estimate)
- Mar 16 — Partnerships & S-Corps: 2025 returns due (Forms 1065 & 1120-S) + K-1s
April
- Apr 15 — Individuals: 2025 return due OR extension filed (payment required)
- Apr 15 — Individuals: Q1 2026 estimated tax payment
June
- Jun 15 — Individuals: Q2 2026 estimated tax payment
September
- Sep 15 — Individuals: Q3 2026 estimated tax payment
- Sep 15 — Partnerships & S-Corps: Extended 2025 returns due
October
- Oct 15 — Individuals: Extended 2025 returns due
- Oct 15 — C-Corporations: Extended 2025 returns due
December
- Dec 15 — Corporations: Q4 2026 estimated tax payment