For Delaware individual income tax returns for tax year 2025, taxpayers may request an automatic extension to file their return. The original due date for filing is April 30, 2026. By filing Form PIT-EXT (Application for Automatic Extension) before the original due date, taxpayers can extend the filing deadline to October 15, 2026.
Key Details for Filing an Extension
Form Required: A valid federal extension automatically extends the time to file your Delaware income tax return to October 15, 2026, Only if you Owe No Tax to the state
If you owe taxes to Delaware, you need to file form PIT-EXT (Application for Automatic Extension along with an extension payment by the original due date.
- Deadline to Request Extension: Must be filed no later than April 30, 2026.
- Payment Deadline: There is no extension of time for payment of tax. Any tax owed must be paid by April 30, 2026, to avoid interest charges.
- Interest on Unpaid Tax: Interest accrues at a rate of ½% per month (or fraction thereof) from the original due date until payment is made.
- Payment Options: If filing online via tax.delaware.gov, taxpayers may pay by direct debit from a U.S. checking or savings account (no dollar limit) or by credit card (up to $10,000).
- Online Filing: Form PIT-EXT can be filed online at tax.delaware.gov.
What to Submit for Extension
If filing Form PIT-EXT, submit the completed form along with payment of any estimated Delaware income tax due. If you have a valid federal extension and are not required to file Form PIT-EXT, retain a copy of the federal extension for your records and submit it with your Delaware return only if requested by the Delaware Division of Revenue.
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Disclaimer: Always verify details with the official Delaware Division of Revenue forms and instructions. This information is based on available documents and may not reflect all possible scenarios. For complex tax situations, consult a CPA or tax professional.