Internal Revenue Service (IRS) · United States

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Form 4868, Application for Automatic Extension of Time To File U.S. Individual Income Tax Return

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Quick answer

Form 4868, Application for Automatic Extension of Time To File U.S. Individual Income Tax Return, is the IRS form individuals use to get six more months to file Form 1040 (or 1040-SR/1040-NR). It is filed by U.S. citizens and residents who need extra time, and it does not extend the time to pay any tax owed. JustFill lets you fill the official 4868 PDF online for free.

Form
Form 4868
Issued by
Internal Revenue Service (IRS)
Country
United States
Cost to fill
Free

What is Form 4868?

Form 4868 is the IRS application for an automatic six-month extension of time to file a U.S. individual income tax return (Form 1040, 1040-SR, or 1040-NR). Any U.S. citizen or resident — and certain nonresidents — can file it by the original April deadline to push their filing deadline to October, without having to explain why. Importantly, it extends only the time to file, not the time to pay: you should still estimate and pay any tax you owe by the original due date to avoid interest and penalties. You can submit it electronically or on paper, and you can also use it as a worksheet to estimate your liability. With JustFill you can fill the official Form 4868 PDF online for free — the AI detects each field so you can type or dictate your answers, it works on scanned copies, and you never need Adobe Acrobat.

Download the Form 4868 form PDF — free

The official Form 4868 (2025) is free to download from irs.gov, where you'll also find instructions printed on the form itself. JustFill opens that same PDF in your browser so you can complete it without Adobe Acrobat.

Get the official Form 4868 PDF from Internal Revenue Service (IRS)

Who fills out Form 4868?

  • Individual taxpayers who need more time to gather documents before filing their Form 1040.
  • U.S. citizens and resident aliens living abroad who want to extend beyond their automatic two-month grace period.
  • Self-employed people and gig workers still reconciling income and expenses near the deadline.
  • Taxpayers waiting on a corrected W-2, 1099, or K-1 before they can file accurately.
  • Anyone affected by a disaster or personal emergency who can't meet the April filing date.

Field-by-field breakdown

What each section of Form 4868 asks for. JustFill’s AI will detect these fields automatically when you upload the PDF — review the breakdown below so you know what to enter.

Part I, Line 1 — Your name(s) and address

The name(s) and mailing address exactly as they will appear on your tax return.

Part I, Line 2 — Your social security number

The SSN of the primary taxpayer filing the extension.

Part I, Line 3 — Spouse's social security number

Your spouse's SSN if you are filing a joint return.

Part II, Line 4 — Estimate of total tax liability

Your best estimate of the total tax you expect to owe for the year.

Part II, Line 5 — Total payments

Total of withholding and estimated payments already made for the year.

Part II, Line 6 — Balance due

Line 4 minus line 5; the amount of tax you still expect to owe.

Part II, Line 7 — Amount you are paying

The amount you are paying with this extension request.

Part II, Lines 8 & 9 — Status checkboxes

Check box 8 if you are 'out of the country' and a U.S. citizen or resident; check box 9 if you file Form 1040-NR and didn't receive wages subject to U.S. withholding.

Common mistakes to avoid

  • 1Assuming the extension also delays payment — interest and penalties still accrue on tax not paid by the original due date.
  • 2Entering a guessed or zero tax liability on line 4 instead of a reasonable good-faith estimate, which can invalidate the extension.
  • 3Filing Form 4868 after already making an electronic extension payment, which the IRS processes as the extension automatically.

How JustFill helps you complete Form 4868

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Frequently asked questions

Yes. Form 4868 is a free public-domain IRS form, and JustFill lets you fill it online for free with no subscription required to complete it.
Download the official PDF from irs.gov, or open it directly in JustFill, which loads the same IRS form in your browser so you can start typing right away.
Yes. JustFill's AI detects each field so you can type or dictate your answers online, then download the completed extension request — no Adobe needed.
It requests an automatic six-month extension of time to file your individual income tax return. JustFill helps you complete it quickly before the deadline.
No — it extends only the time to file, not to pay, so estimate and pay any balance due by the original deadline. JustFill makes it easy to fill in your estimated liability on line 4.
It gives you about six more months, typically moving an April filing deadline to October. JustFill lets you complete and download the form in minutes.

Official source: Form 4868 on Internal Revenue Service (IRS)’s website

JustFill is an independent product and is not affiliated with, endorsed by, or sponsored by Internal Revenue Service (IRS) or any government agency. Always verify your completed form on the official version before signing or submitting.