For U.S. federal individual income taxes for the 2025 tax year (filed in 2026), the standard deadline is April 15, 2026, with a possible extension to October 15, 2026 in most cases.

Quick Scoop: Key Dates

  • Main filing deadline (most individuals):
    • April 15, 2026, to file your 2025 federal tax return and pay any tax due.
  • Extension deadline:
    • If you request a filing extension by April 15, you generally have until October 15, 2026, to file the return (but you still must pay what you owe by April 15 to avoid extra interest and some penalties).
  • Weekend/holiday rule:
    • If the 15th falls on a weekend or legal holiday, the deadline usually moves to the next business day.

Think of April 15 as the “regular finish line” and October 15 as the “paperwork-only extension” finish line.

A Few Extra Notes

  • Most people are “calendar-year filers,” meaning their tax year runs January 1–December 31 and they file by mid‑April.
  • Some taxpayers (like those living abroad or with fiscal-year businesses) can have different due dates or automatic short extensions, and disaster-area relief can also shift deadlines.

If you’re ever unsure, check the IRS “When to file” page or a reputable tax site close to tax season for any last‑minute changes.

TL;DR:

  • File and pay for 2025 taxes by April 15, 2026 (standard case).
  • If you file an extension by that date, you generally have until October 15, 2026 to submit the return itself.

Information gathered from public forums or data available on the internet and portrayed here.