IRS Tax Deadlines 2026

Key federal dates for filing season and quarterly estimates. Confirm holidays and state deadlines with IRS.gov and your state agency.

• Individual income tax return (Form 1040) — tax year 2025

  2026-04-15

  Most individual taxpayers must file their 2025 Form 1040 by April 15, 2026.

• Automatic filing extension deadline — tax year 2025

  2026-10-15

  Extended filing deadline for individuals who timely filed Form 4868.

• Q1 estimated tax payment — tax year 2026

  2026-04-15

  First quarterly estimated tax installment for tax year 2026 (Form 1040-ES).

• Q2 estimated tax payment — tax year 2026

  2026-06-15

  Second quarterly estimated tax installment for tax year 2026 (Form 1040-ES).

• Q3 estimated tax payment — tax year 2026

  2026-09-15

  Third quarterly estimated tax installment for tax year 2026 (Form 1040-ES).

• Q4 estimated tax payment — tax year 2026

  2027-01-15

  Fourth quarterly estimated tax installment for tax year 2026 (Form 1040-ES), due January 15, 2027.

• Individual income tax return (Form 1040) — tax year 2026

  2027-04-15

  Most individual taxpayers must file their 2026 Form 1040 by April 15, 2027.