The last day to submit U.S. income tax forms or to request an extension for filing the 2024 tax return is April 15, 2025. If an extension is requested by this date, taxpayers have until October 15, 2025, to file their complete tax return. However, any taxes owed must still be paid by the original April 15 deadline to avoid penalties and interest. Extensions only grant more time to file, not to pay the taxes due.
Key deadlines for 2025 tax filing:
- Original income tax filing deadline: April 15, 2025
- Last day to request an extension: April 15, 2025
- Extended filing deadline (with approved extension): October 15, 2025
- Taxes owed payment deadline: April 15, 2025
Additional notes:
- You can request an extension by paying estimated taxes online and selecting the extension option, using IRS Free File, or mailing IRS Form 4868.
- Extensions apply to filing the return, not paying taxes.
- Special cases like military personnel or those living abroad may have other deadlines or additional extensions.
All this aligns with information from the IRS and major tax guidance sources for 2025.
