How do state tax extensions work?
If you need more time to file your state tax return, you can usually request a state tax extension. This gives you extra time to file your return, but it doesn’t give you more time to pay taxes you owe.
If you expect to owe state taxes, pay by April 15, 2026 to avoid late-payment penalties and interest.
Most states either grant an automatic extension or accept your federal extension, but some require a separate state extension—check your state’s rules to see what applies.
States that require a separate state extension
For Delaware and DC, file your extension and pay directly on your state’s website.
Delaware
States that accept a federal extension or grant an automatic extension
State rules vary. Check your state’s website for filing requirements, forms, and payment instructions.
New York - Not automatic, but supported in april if it’s your primary filing state
Rhode Island - Not automatic, but supported in april if it’s your primary filing state
Note: Some states don’t require a personal income tax return (e.g., Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming).
In those cases, you generally don’t need to file a state income tax extension—filing a federal extension is typically sufficient.
However, keep in mind that certain states may still have other filing requirements (for example, taxes on specific types of income like capital gains, dividends, or business activity). If that applies to you, a separate state extension may still be required.
Key extension filing dates
For the 2025 tax year, here are the key dates to know:
April 15, 2026: Deadline to pay most state taxes owed
October 15, 2026: Typical extension deadline to file your return (varies by state)
This content is provided for informational purposes only and should not be construed as tax, legal, financial, accounting, or other advice. Rules and regulations vary by location and are subject to change, so please consult with an expert if you need advice specific to you.
Any third-party links are provided for informational purposes only. The third parties and their sites are not endorsed by April and April is not responsible for, and has no control over, their content, privacy policies, or terms of service.