Key Dates for the 2026 Tax Filing Season

The IRS is expected to begin accepting tax returns for the 2026 filing season on Monday, January 26, 2026. For the upcoming season, no major changes are expected to the overall tax calendar.

January 15, 2026

Final estimated tax payment due for 2025

February 2, 2026

Deadline for employers to provide employees with Form W-2 and to furnish Forms 1099 to independent contractors

January 26, 2026

IRS is expected to begin accepting tax returns for the 2026 filing season

April 15, 2026

Deadline to file individual income tax returns (Form 1040) and pay any taxes owed. This is also the last day to make contributions to an IRA or HSA for the 2025 tax year.

First estimated tax payment for the 2026 tax year is due for individuals.

Filing deadline for calendar-year C- Corporations (Form 1120).

March 16, 2026

Filing deadline for calendar-year Partnerships (Form 1065) and S Corporations (Form 1120-S)

May 15, 2026

Filing deadline for calendar year non-profit entities (Form 990)

June 15, 2026

Second estimated tax payment for the 2026 tax year is due.

September 15, 2026

Third estimated tax payment for the 2026 tax year is due.

October 15, 2026

Extended deadline to file your 2025 tax return if you requested an extension by the April 15 deadline.