US Tax Deadlines Calendar 2026–2027
Every key federal tax deadline for 2026 and early 2027 — filing day, extensions, quarterly estimated payments, W-2/1099 due dates and business returns — adjusted for weekends.
Estimates only — not tax advice. Tax rules change and depend on your situation; check with the tax authority or a tax professional.
How to use
- 1Find your deadline in the table.
- 2Dates falling on a weekend or holiday already move to the next business day.
- 3Check irs.gov for disaster-area postponements in your county.
Frequently asked questions
When is the 2026 tax filing deadline?
Wednesday, April 15, 2026 for 2025 returns. With an extension (Form 4868), returns are due October 15, 2026 — but payment is still due April 15.
When are 2026 estimated payments due?
April 15, June 15 and September 15, 2026, and January 15, 2027.
When is the 2027 filing deadline?
Thursday, April 15, 2027 for 2026 tax returns.