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Tax and Financial Deadlines

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Below is a listing of important tax dates. Please note these are based on a calendar year. If your company uses a fiscal year, your dates will be slightly different. Tax deadlines never fall on weekends or legal holidays. If a deadline date falls on a holiday or weekend, taxes will typically be due the next business day; however, you should confirm with the IRS.

2025 Tax Dates

Jan. 15, 2026 – 4th Quarter 2025 Estimated Tax Payment Due
If you are required to pay estimated tax, your quarterly estimated tax from October, November, and December 2025 is due.

March 2, 2026 – Farmers 2024 Federal Tax Return Due
If you are in the business of farming or ranching, your 2024 farm tax return is due.

March 16, 2026 – Partnerships and S Corporations 2025 Federal Tax Return Due
Both partnerships and S corporations are required to file their taxes by this date.

April 15, 2026 – Individuals Federal Tax Return Due

15th Day of the 5th month after an organization’s taxable year, 2026 – Exempt Organizations 2025 Federal Tax Return Due
In general, most exempt organizations are required to file a return annually.

April 15, 2026 – Calendar Year Estates, Trusts, and C Corporations 2025

April 15, 2026 – 1st Quarter 2025 Estimated Tax Payment Due
If you are required to pay estimated tax, your quarterly estimated tax from January, February, and March is due.

April 30, 2026 – 1st Quarter Payroll Reports 1/1 to 3/31

June 15, 2026 – 2nd Quarter 2026 Estimated Tax Payment Due
If you are required to pay estimated tax, your quarterly estimated tax from April, May, and June is due.

July 31, 2026 – 2nd Quarter Payroll Reports 4/1 to 5/31 due

Sept. 15, 2026 – 3rd Quarter 2026 Estimated Tax Payment Due
If you are required to pay estimated tax, your quarterly estimated tax from July, August, and September is due.

Sept. 15, 2026 – Partnerships and S Corporations Extended 2025 Federal Tax Return Due
If you filed for an extension, your six months are up, and your federal income taxes are due.

Sept. 30, 2026 – Trust and Calendar Year Estates Extended 2025 Federal Tax Return Due
If you filed a 5 1/2-month extension on your Estates and Trusts return, it is now due.

Oct. 15, 2026 – Individuals and C Corporations Extended 2025 Federal Tax Return Due
If you filed for an extension, your six months are up, and your federal income taxes are due.

Nov. 2, 2026 – 3rd Quarter Payroll Reports 4/1 to 5/31 due

Full IRS Tax Calendar

2026 Tax Calendar
For a full listing of important dates for employers, individuals, and others, view IRS Publication 509.

IRS Tax Calendar for Businesses and Self-Employed
The IRS provides a tax calendar online and as a download for businesses and those who are self employed with push notifications for important dates.