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Reference

Tax calendar

The key federal dates for the 2026 tax year (returns filed in 2027) and estimated payments for 2027.

Dates can move when they fall on weekends or holidays, and the IRS sometimes extends deadlines for disaster areas. Always confirm on irs.gov. State deadlines may differ.
January 15, 2027 Fourth estimated tax payment for 2026 is due.
February 1, 2027 Employers must send W-2s, and businesses must send most 1099-NEC forms, for 2026. (January 31 falls on a Sunday.)
Late January 2027 The IRS begins accepting 2026 returns. The exact date is announced each year.
April 15, 2027 Deadline to file your 2026 return and pay any tax owed, or to request an extension. Also the deadline for 2026 IRA and HSA contributions, and the first estimated payment for 2027.
June 15, 2027 Second estimated tax payment for 2027 is due.
September 15, 2027 Third estimated tax payment for 2027 is due.
October 15, 2027 Deadline to file if you got an extension. An extension gives more time to file, not more time to pay.
January 18, 2028 Fourth estimated tax payment for 2027 is due. (January 15 falls on a Saturday and the 17th is a federal holiday.)

Sources

Last updated: November 14, 2026

This page was written from the sources below. Official sources are from the IRS or another government body; secondary sources are tax publications used to cross-check new rules. Tax law changes, so always confirm with the official source for the year you're filing.

  • OfficialIRS Publication 509, Tax Calendars
  • OfficialIRS, Form 1040-ES, Estimated Tax for Individuals
  • SecondaryWeekend and federal holiday adjustments checked against the calendar