Extended tax deadline: Can I file another extension after October 15?
Key Takeaways
- October 15 is the final extended tax deadline to file your return if you requested an extension with Form 4868.
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You cannot file another extension after October 15 because the IRS only allows one tax extension per tax year.
- If you miss the October extended tax filing deadline, you’ll have failure-to-file penalties and, potentially, failure-to-pay penalties if you still owe taxes.
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File your return as soon as possible after the October tax extension deadline to help reduce additional penalties and interest.
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Some taxpayers may qualify for a later extended tax deadline, including disaster victims, military members in combat zones, and certain taxpayers living abroad
The October extended tax deadline can almost feel like a second tax season. If you filed for an extension before the April 15 deadline and are just getting started on your return, the rush to get taxes done before October 15 is real.
With the extended tax filing deadline around the corner, it’s easy to feel overwhelmed. You may have questions like “what happens if you miss the tax deadline?” or “can I file another extension?” We’re here to break it down so you know exactly what to expect and what to do if you’re running behind. Read on to get all your tax extension deadline questions answered.
Of course, you can rely on H&R Block to get your return across the finish line whether you file online or with an H&R Block tax pro.
When is the extended tax filing deadline?
The extended tax filing deadline is October 15. This is the last day to file taxes after an extension (requested with Form 4868 in April).
While you have until October 15 to file your tax return, any taxes owed must be paid by the original due date to avoid interest and penalties. The extension only prevents the failure to file penalty.
However, if you didn’t file that extension form in April and you haven’t yet filed your 2025 taxes, you’ll want to get it done as soon as possible. Check out the “What to do” section below to get started.
Can I file another extension after October 15?
No, unfortunately, you can’t file for a second tax extension after October 15. The IRS only allows one automatic extension per tax year. If you miss this deadline, your return is considered late, and penalties may apply.
If you do not pay your taxes owed by the original due date, you will be subject to interest and penalties. The extension to file your return does not prevent these charges from accumulating.
However, there are still ways to get caught up and minimize the impact. Check out the “What to do” section below.
Don’t owe taxes this year? You may not need an extension. You’re generally only required to file a return by the deadline if you owe taxes. If you’re expecting a refund, you may not be required to file a return—but, keep in mind, filing is the only way to get your refund.
What happens if you miss the tax extension deadline?
If you miss the October extended tax filing deadline, you may owe failure-to-file penalties. The failure-to-file penalties are generally based on the amount of tax due when the return was originally required to be filed on April 15. Plus, if you owe taxes, any failure-to-pay penalties are assessed regardless of whether you filed for an extension.
If you miss the tax extension deadline of October 15, your best bet is to file your return as soon as possible to minimize any further penalties and interest.
So, how are IRS late-filing and late-payment penalties calculated? Read on as we outline the difference between the two penalties.
Failure-to-File Penalty after the extended tax deadline
This penalty is typically 5% of the unpaid taxes for each month your return is late, up to a maximum of 25%. If your return is more than 60 days late, the minimum penalty is either $525 (for 2026) or 100% of the tax due—whichever is less.
Penalties for filing taxes late after an extension: Terminology clarification
Some people may think of this as a late filing penalty after the extension, but the technical term is failure-to-file penalty.
Failure-to-Pay Penalty and interest
If you owe taxes and don’t pay by the original tax payment deadline on April 15, the IRS charges a failure-to-pay penalty of 0.5% per month on the unpaid amount. Interest also accrues daily, based on the federal short-term rate plus 3%. Extending your return does not extend the obligation to pay taxes owed and penalties are assesses even if you’ve requested an extension to file your return.
How the penalties are calculated
Penalties are calculated based on how late your return is and how much you owe. If both the failure-to-file and failure-to-pay penalties apply, the IRS reduces the failure-to-file penalty by the amount of the failure-to-pay penalty so that the combined penalties do not exceed 5% per month. After 5 months, the failure to file penalty will max out but the failure to pay penalty will continue.
What to do if you miss the October 15 tax extension deadline?
Missing the extended deadline isn’t the end of the world, but you do want to act sooner than later.
Here’s what you can do to get back on track:
- File your return as soon as possible to minimize penalties. The sooner you file, the less you’ll owe in penalties. Even if you can’t pay your full tax bill, filing your return stops the failure-to-file penalty from growing.
- Pay as much of your tax bill as possible. Paying even a portion of your tax liability can reduce the failure-to-pay penalty and interest. Every dollar counts.
- Explore IRS payment options for your balance. If you can’t pay in full, the IRS offers payment plans, there are options if you’re unable to pay your tax bill. You can request an IRS payment plan, which allows you to pay your taxes in installments. Find out more about setting up an installment agreement.
- Check whether you qualify for penalty relief. If you acted in good faith and have a valid reason for not meeting your tax obligations, you can ask the IRS to remove or reduce some penalties. If you think the amount you owe is incorrect, you can dispute the penalty. Additionally, if this is your first tax penalty or you meet other specific criteria, you might qualify for relief through an administrative waiver.
Exceptions to the October 15 extended tax deadline
Please also note some taxpayers may have extra time to file their tax returns and pay any taxes due.
You may have more time if you are a:
- Victim of a federally declared disaster victim
- Member of the military personnel serving in a combat zone, or
- Living abroad
Extended deadlines for disaster victims
If you were affected by a federally declared disaster, you may have more time to file your tax return and pay taxes owed. The IRS will announce when these types of extensions apply. How much extra time you get depends on the specific disaster.
Learn more about disaster-related tax relief and check the latest IRS information about extensions in disaster areas.
Tax deadline extensions for military members and taxpayers abroad
You may also qualify for extra time to file if you’re serving in a combat zone or living outside the United States.
- For military members, the amount of additional time depends on factors such as where you’re serving and the length of your deployment. Learn more about military taxes.
- For taxpayers living abroad, you generally receive an automatic two-month extension to file, moving your original deadline from April 15 to June 15 (or the next business day if on a holiday or weekend. You can also request an extension if you need more time, but your last day to file taxes is October 15. Learn more about expat taxes.
Extended tax deadline FAQs
Can you file taxes after October 15?
Yes, you can still file your tax return after the October tax extension deadline. However, if you owe taxes, you may face penalties for filing and paying late. The sooner you file, the sooner you can stop additional penalties from building up.
When are taxes due after an extension?
An extension gives you more time to file your tax return, but not more time to pay your taxes. Any taxes you owe are generally due by the original tax filing deadline, usually April 15. If you don’t pay by that date, penalties and interest may apply even if you filed for an extension.
Can I file my taxes now if I’m on an extension?
Yes, if you filed for an extension and haven’t submitted your return yet, you can do it any time before the extended tax filing deadline of October 15. After that, your return is considered late.
What’s the difference between an extension to file and an extension to pay?
An “extension to file” gives you more time to submit your return (typically extended to October 15), but it doesn’t extend your deadline to pay taxes. Unfortunately, there isn’t a way to get an “extension to pay” your taxes. Any unpaid taxes after April 15 may accrue penalties and interest.
Will I lose my refund if I miss the October 15 deadline?
Not necessarily. You have up to three years from the original due date to claim a refund. However, if you wait too long, you could forfeit it.
Keep in mind you’re generally only required to file a return by the deadline if you owe taxes. If you are expecting a refund, you may not be required to file a return, but filing is the only way to access your refund.
What should I do if I cannot pay the IRS?
If you can’t afford to pay your full tax bill, file your return anyway. Filing on time can help you avoid larger failure-to-file penalties. Then, pay as much as you can and explore IRS payment options. Depending on your situation, you may qualify for an installment agreement that lets you pay your balance over time. The IRS may also offer other relief options in certain circumstances.
Get help filing your tax return from H&R Block
While taxes can be stressful, you don’t have to go it alone. Whether you work with a tax professional or file online, you can trust the expertise of H&R Block to help you file your taxes.
Make an appointment to file with a tax pro or file taxes online with H&R Block Online today!
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