Tax Extension Deadlines: When Are Taxes Due?

A calendar marked with tax-related deadlines and a pen resting on a tax form.

Understanding Tax Extension Deadlines

Filing taxes can be a daunting task, and sometimes, despite our best efforts, we find ourselves needing more time. Fortunately, the IRS provides options for those who need additional time to prepare their returns.

What is a Tax Extension?

A tax extension is a formal request to the IRS for additional time to file your tax return. It's crucial to note that an extension only extends the time to file, not the time to pay any taxes owed. If you anticipate owing taxes, you should estimate and pay as much as possible by the original deadline to minimize interest and penalties.

Standard Tax Deadlines

For most individual taxpayers, federal tax returns are typically due on April 15th. However, when this date falls on a weekend or holiday, the deadline shifts to the next business day. For example, in 2023, the deadline was April 18 due to the Emancipation Day holiday in Washington, D.C.

Business Tax Extension Deadlines

Different deadlines apply for various business entities:

Entity TypeOriginal Due DateExtended Due Date
S-CorpsMarch 15September 15
PartnershipsMarch 15September 15
C-CorpsApril 15October 15
Estates and trustsApril 15October 15

How to File for a Tax Extension

Filing for a tax extension is relatively straightforward:

  1. Estimate Your Tax Liability: Calculate your expected tax liability for the year
  2. Use the IRS Free File program to electronically file Form 4868
  3. Download and submit Form 4868
  4. Pay any estimated taxes owed to avoid penalties and interest

Special Circumstances

Natural Disasters

The IRS often provides automatic extensions for taxpayers affected by federally declared disasters. Visit the IRS disaster relief page for current information.

Military Personnel

Active duty military members serving in combat zones typically receive automatic extensions, including:

  • 180 days after returning from the combat zone
  • Additional time for qualifying hospitalization

International Taxpayers

U.S. citizens living abroad automatically receive a two-month extension to June 15th. However, they can still request an additional extension to October 15th using Form 4868.

State Tax Extensions

State tax extension deadlines vary by jurisdiction:

  • Many states automatically grant the same extension as federal
  • Some states require separate extension requests
  • A few states have different extension periods

"While extensions provide more time to file, it's crucial to understand that any taxes owed are still due by the original deadline to avoid penalties and interest." - IRS Guidelines

Consequences of Missing Deadlines

Failing to file your tax return or pay taxes owed can result in significant penalties:

  • Failure-to-file penalty: 5% of unpaid taxes per month (up to 25%)
  • Failure-to-pay penalty: 0.5% of unpaid taxes per month (up to 25%)
  • Interest charges on unpaid taxes

Best Practices

To manage tax deadlines effectively:

  • Mark important dates on your calendar
  • Gather documents early
  • Consider estimated tax payments
  • Consult with a tax professional
  • Keep accurate records year-round

For more detailed information, visit the IRS website or consult with a tax professional to ensure compliance with all tax regulations.