When Is Tax Day 2026? Filing Deadline, Extensions & Key Dates
Tax day 2026: When are taxes due? April 15 filing deadline, extension to October 15. Quarterly estimated tax dates. State deadlines. Estimate your refund or tax owed.
When Is Tax Day 2026? Filing Deadline, Extensions & Key Dates
"When are taxes due?" — here are the key 2026 tax deadlines for filing and paying.
Tax Day 2026: April 15
April 15, 2026 is the deadline to file your 2025 tax return and pay any tax owed. If April 15 falls on a weekend or holiday, the deadline moves to the next business day.
Extension to October 15
Request an automatic extension by April 15 to get until October 15, 2026 to file. Note: an extension extends the *filing* deadline, not the *payment* deadline. You still owe interest and possibly penalties on unpaid tax after April 15.
Quarterly Estimated Tax Due Dates 2026
- Q1: April 15, 2026
- Q2: June 15, 2026
- Q3: September 15, 2026
- Q4: January 15, 2027
State Deadlines
Most states align with the federal April 15 deadline. Some have different dates—check your state revenue department.
Estimate Your Tax and Refund
Tax Refund Calculator – refund or amount owed →
Quarterly Estimated Tax Calculator – 1040-ES payments →
*Consult IRS.gov or a tax professional for your situation.*