2025 Tax Deadlines

Stay on top of tax deadlines! While we update this list throughout the years as tax laws change, it’s not an exhaustive list, so please go to the IRS website for more info.

A quick guide of the most important dates to keep in mind this calendar year.

  • January 15th: due date to pay 4th quarter estimated taxes, which runs from October 1st through December 31st.

  • January 31st:

    - Due date to send out 1099s and W-2s to recipients.

    - Due date to file 1099-NECs and W-2s/W-3s with the IRS.

  • February 28th: due date to file 1099s/1096s (aside from 1099-NECs) if you are paper filing.

  • March 17th:

    - Due date to file S-Corp (1120S) and partnership (1065) returns

    - Due date to elect S-Corp status for existing corporations or LLCs.

    - Last day for multi-member LLCs, partnerships, and S Corps to distribute Schedule K-1 to all owners.

  • March 31st:

    - This is the last day to transmit informational returns electronically (Form W-2 and all of your Form 1099s) to the IRS.

    - Deadline for multi-member LLCs and partnerships to file their 2024 income tax returns via Form 1065.

  • April 1st: due date to file 1099s/1096s (aside from 1099-NECs) if you are filing electronically.

  • April 15th:

    - Due date to file individual (1040), trust (1041), and C-Corp (1120) returns.

    - Last day to make HSA contributions and contributions to retirement plans.

    - Due date to pay 1st quarter estimated payments.

  • April 30th: due date for companies with employees to file the first quarter 2025 payroll tax return using Form 941.

  • May 15th: due date to file most nonprofit returns (Form 990).

  • June 16th: due date to pay 2nd quarter estimated payments.

  • July 31st: due date for companies with employees to file the second quarter 2025 payroll tax return using Form 941.

  • September 15th:

    - Due date for extended S-Corp and partnership tax returns.

    - Due date to pay 3rd quarter estimated payments.

  • September 30: due date for extended trust returns.

  • October 15th: due date for extended individual tax returns and C-Corp returns.

  • October 31st: due date for companies with employees to file the third quarter 2025 payroll tax return using Form 941.

  • November 15th: due date to file extended nonprofit returns.

  • December 15th:

    - Last date for corporations to deposit the fourth installment of 2025 estimated income tax.

    - Due date for companies with employees to file the fourth quarter 2025 payroll tax return using Form 941.

Remember the April 15th deadline is an extension to file, not an extension to pay. If you file an extension and still owe money you will be assessed the failure-to-pay penalty of 0.5% per month on the balance, not to exceed 25% of the unpaid amount.

If you haven’t found a good tax accountant (CPA) yet - don’t wait. Use these questions to ask your tax accountant to grow your business and here’s why you need a bookkeeper and a tax accountant in your business - both play different and important roles.

Lindsey Sryock