2026 Federal Tax Deadlines to Keep on Your Radar

If you’re filing U.S. taxes for the 2025 tax year, the most important date to remember is April 15, 2026. By this date, individual taxpayers must file their federal income tax return (Form 1040) and pay any remaining tax balance to avoid penalties or interest.

Below is a practical overview of the main federal filing deadlines for 2026:

Key Federal Tax Filing Dates for 2026

• Individuals (Form 1040): April 15, 2026 Extension available until October 15, 2026

• C Corporations (Form 1120): April 15, 2026 Extension available until October 15, 2026

• Partnerships (Form 1065): March 16, 2026 Extension available until September 15, 2026

• S Corporations (Form 1120-S): March 16, 2026 Extension available until September 15, 2026

Keep in mind that filing an extension gives you more time to submit paperwork — not more time to pay. Any tax owed is still due by the original deadline.

State Tax Filing Deadlines

State income tax deadlines may differ from federal requirements. While California typically aligns its individual filing deadline with the federal April 15 date, deadlines and rules can change.

Taxpayers filing in California should confirm current due dates directly with the California Franchise Tax Board (FTB):https://www.ftb.ca.gov/file/when-to-file/index.html

Reminder

Federal tax deadlines and rules may change from year to year. To stay up to date, it’s always a good idea to review the latest guidance published by the IRS.

IRS Tax Deadlines & Filing Information:https://www.irs.gov/filing