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Fill Out Form 4868 Online (Tax Extension, Free)
Form 4868 gives you an automatic six-month extension to file your individual tax return. Fill it in below and mail it by the filing deadline.
Have your own copy?
The PDF opens in this browser tab. What you type and your signature never leave your device.
What is Form 4868?
An extension gives more time to file, not more time to pay: estimate and pay what you owe by the normal deadline to avoid penalties and interest. You can also request it electronically.
Filling it in: quick tips
- Part I: name, address, SSN (and spouse's SSN if filing jointly).
- Part II line 4: your estimated total tax; line 5: payments already made; line 7: amount you're paying now.
- Tick the boxes on lines 8–9 only if they apply (out of the country, Form 1040-NR filers).
These tips are a quick guide, not tax advice. The form's own instructions on irs.gov are the final word. Form version: 2025 tax year, checked October 2026.
How to fill in Form 4868
Open
The official Form 4868 (2025 tax year) opens right here. Or add your own copy.
Fill & sign
Type into the highlighted boxes and tick the right options. Use Signature and Date to sign.
Download
Download your completed PDF and send it to whoever asked for it.
Frequently asked questions
Does Form 4868 need a signature?
No. Form 4868 has no signature line. Just fill it in and send it.
Is this the right year?
This is the form for the 2025 tax year (returns due in 2026). Use the form for the year you're filing.
Is my information uploaded?
No. The PDF opens in this browser tab and everything you type stays on your device. Nothing is sent to a server, so your SSN, address and signature never leave your computer or phone.
Is it really free?
Yes. No trial, no subscription, no sign-up and no watermark. You download the finished PDF straight away. (Some “free” PDF fillers charge a small trial fee that turns into a monthly subscription. This one never asks for a card.)