Free Tax Extension: Every Way to File for $0
Quick answer
A federal tax extension is free. Mail Form 4868 (fill it out free here), e-file it free through IRS Free File, or pay what you owe online and mark it as an extension. You pay only the tax you owe, never a fee to the IRS for the extension itself.
Any of the three gives you until October 15, 2027 to file your 2026 return.
Free tax extension options compared
All three are free ways to request the same automatic 6-month extension. The best one depends on whether you owe and how you like to file.
| Pay online and mark it as an extension | E-file Form 4868 | Mail Form 4868 | |
|---|---|---|---|
| Best for | People who owe and can pay some or all of it now | Anyone, including people who owe nothing | Anyone, and the only way for fiscal-year filers |
| Form needed | None | Form 4868, sent electronically | Form 4868 on paper |
| Cost to request | Free (card processors charge a fee) | Free through IRS Free File | Free here, plus postage |
| Proof | A payment confirmation number | An electronic acknowledgment | Your mailing receipt |
| On time if | Paid by the due date | Sent by the due date, in your time zone | Postmarked by the due date |
IRS Free File: e-file Form 4868 for free
IRS Free File is the IRS's program for filing online at no cost, and it covers Form 4868. The IRS says there's no income limit for extensions. You can request the extension through a Free File guided software partner or through Free File Fillable Forms, the IRS's online version of the paper forms.
Always start from IRS.gov, not from a search ad, so you land on the free version. Free File for the 2027 season opens in January 2027, according to IRS.gov. How to file an extension with IRS Free File.
Fill out Form 4868 free and mail it
Our tool is free, with no account. Answer a few questions, and it fills in the IRS PDF in your browser and shows the mailing address for your state, with or without a payment. Your Social Security number is never saved or sent anywhere. You pay only postage.
This is the right free option if you'd rather not create an account anywhere, or if you file on a fiscal year: fiscal-year filers must file Form 4868 on paper.
Pay and mark it as an extension
If you owe, paying online can be your extension. Choose extension as the reason for the payment, and the IRS processes the extension automatically. There's no form to file.
IRS Direct Pay and your IRS online account are free. Paying by debit card, credit card or digital wallet goes through a payment processor, which charges a fee. Either way, the extension itself costs nothing. How to get an extension by paying.
What isn't free
- The tax you owe. An extension gives you more time to file, not to pay. Tax not paid by April 15, 2027 gets interest, and usually a late-payment penalty. How paying works.
- Card processing fees if you pay by card.
- Some state returns and paid products. Free File Fillable Forms doesn't do state filing, and guided Free File partners set their own rules for state returns. Your state may need its own extension.
- Postage if you mail it. Certified Mail costs more but gives you a dated receipt.
Which free option should you pick?
- You owe and can pay now: pay online and mark it as an extension. One step covers both.
- You owe nothing, or can't pay yet, and want proof fast: e-file through IRS Free File for an electronic acknowledgment.
- You don't want an account, or you file on a fiscal year: fill out Form 4868 here and mail it.
- You want a guided e-file with support instead: our partner TaxExtension.com e-files Form 4868. E-file with TaxExtension.com (opens in a new tab)
If you choose to e-file, you'll go to our partner TaxExtension.com. We may receive compensation from that partner.
Step by step for each free option
IRS Free File
- Go to the IRS Free File page on IRS.gov.
- Pick guided software or Fillable Forms.
- Choose the extension (Form 4868) option and enter your details and estimate.
- Submit and save the acknowledgment.
Fill out free and mail
- Start the free form here and answer six short steps.
- Download the filled PDF and print it.
- Mail it to the address we show for your state, postmarked by April 15, 2027.
Pay and mark it as an extension
- Open IRS Direct Pay or your IRS online account.
- Choose "Extension" as the reason for payment, for the tax year you're extending.
- Pay what you can and save the confirmation number.
"Free" offers to watch out for
Not every product advertised as a free tax extension is free for everything you'll need, such as the return itself or a state filing. If you want IRS Free File, go to IRS.gov first and follow its links, as the IRS recommends. If a site asks for payment details, read what you're paying for before you continue.
Questions people ask
Is there really no charge from the IRS for an extension?
Right. Form 4868 has no filing fee, whether you mail it or e-file it through IRS Free File. What you pay the IRS is your tax.
Is the free tax extension the same as a free return?
No. The extension only moves your filing deadline. You still file the return by October 15, 2027, and a free return depends on the product and your situation.
Can I get a free extension if I owe a lot?
Yes. Any free option works no matter how much you owe. Pay what you can by April 15, 2027 to limit interest and penalties.
Is a mailed extension as good as an e-filed one?
It's the same extension. The differences are proof and timing: e-filing gives you an electronic acknowledgment, while the IRS doesn't confirm paper extensions.
Does a free federal extension cover my state?
Not in every state. Check your state's tax agency.
Common mistakes
- Thinking free means no payment. The extension is free; the tax you owe is still due April 15, 2027.
- Doubling up. If you e-file or pay as your extension, you don't need to mail a paper form as well.
- Reaching Free File through an ad. Start from IRS.gov.
- Forgetting the state. A federal extension doesn't cover your state return in every state.
Fill out Form 4868 free. No account, and your Social Security number never leaves this page.