Personal and business Tax
Nova Tax and Accounting Services logo – tax preparation and nonprofit accounting in Ashburn, Virginia

When Are Taxes Due 2025? A Complete Guide to Filing Deadlines

Understanding tax deadlines is essential for individuals, businesses, and tax-exempt organizations to avoid penalties and interest. For the 2025 tax year (returns filed in 2026), the calendar includes several important dates depending on your filing status and entity type.

Individual Tax Returns (Form 1040)

For most individual taxpayers, the deadline to file a 2025 federal tax return is April 15, 2026 . This applies to wages, interest, dividends, and other common income sources. If you need more time, you can request an automatic six-month extension by filing Form 4868. This moves your filing deadline to October 15, 2026 .

However, an extension to file is not an extension to pay. Any taxes owed must be paid by April 15, 2026, regardless of whether you request a filing extension . Interest accrues from the original deadline on any unpaid balance.

Special Rules for U.S. Citizens Living Abroad

If you live outside the United States and Puerto Rico and your tax home is in a foreign country, you automatically receive a two-month filing extension to June 15, 2026, with no paperwork required . If you need additional time beyond June 15, you can file Form 4868 to extend your filing deadline further to October 15, 2026. The automatic extension does not apply to taxpayers who are temporarily overseas for vacation or business travel.

Business and Entity Deadlines

Different entity types have different filing deadlines for the 2025 tax year :

  • Partnerships (Form 1065) and S-Corporations (Form 1120-S): These entities must file by March 16, 2026. A six-month extension moves the deadline to September 15, 2026.

  • C-Corporations (Form 1120): Calendar-year C-corps must file by April 15, 2026, with a six-month extension to October 15, 2026.

  • Estates and Trusts (Form 1041): The deadline is April 15, 2026, with a 5.5-month extension to September 30, 2026.

Nonprofit Organizations (Form 990)

Tax-exempt organizations filing Form 990 must submit their returns by May 15, 2026 for calendar-year filers . A six-month extension moves the deadline to November 16, 2026.

Farmers, Fishermen, and Estimated Tax Payments

Farmers and fishermen who receive at least two-thirds of their income from farming or fishing must file by March 1, 2026 (or March 2 for 2025 returns) to avoid estimated tax penalties, unless they paid their entire estimated tax by January 15, 2026 .

For other taxpayers, quarterly estimated tax payments for self-employment and other income without withholding are generally due on April 15, June 15, September 15, and January 15 of the following year.

Virginia and DC State Deadlines

While federal deadlines apply nationwide, state deadlines may differ. The Virginia Department of Taxation sets Virginia’s individual income tax deadline as May 1, 2026—a unique two-week buffer after the federal April 15 deadline. Washington DC generally follows the federal April 15 deadline for individual income tax, but taxpayers should verify with the DC Office of Tax and Revenue .

Need Professional Help Meeting Deadlines?

Missing a tax deadline can be costly. Whether you need to file an individual return, business return, or nonprofit Form 990, Nova Tax & Accounting Services offers expert tax solutions to help you file accurately and on time. Schedule your free consultation today to ensure you meet every deadline.