Key filing season dates

Individual tax dates for 2026

• January 15, 2026: The fourth and final quarterly estimated tax payment for the 2025 tax year is due.

• January 31, 2026: Employers must send out Forms W-2, and businesses must send Forms 1099 to contractors and recipients.

• April 15, 2026:

  • This is the deadline to file your federal income tax return for the 2025 tax year.

  • If you need more time, you must file Form 4868 by this date for an automatic 6-month extension.

  • Your first quarterly estimated tax payment for the 2026 tax year is due.

• June 15, 2026: The second quarterly estimated tax payment for the 2026 tax year is due. The due date moves from June 15 to June 16, 2025, but should be June 15, 2026.

• September 15, 2026: The third quarterly estimated tax payment for the 2026 tax year is due.

• October 15, 2026: This is the extended deadline to file your 2025 tax return if you requested an extension. 

Business tax dates for 2026

• March 16, 2026: The filing deadline for calendar-year partnerships (Form 1065) and S-corporations (Form 1120-S). An extension can be filed with Form 7004.

• April 15, 2026: The deadline for calendar-year C-corporations (Form 1120). This is also the deadline for sole proprietors and single-member LLCs who report business income on Schedule C of their Form 1040. 

Disclaimer: This information is for general guidance and is not a substitute for professional tax advice. The IRS sometimes adjusts tax deadlines for weekends, holidays, or specific disaster-affected areas. Always verify deadlines and requirements with the official IRS website or a qualified tax professional. 

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