What Does a Tax Extension Do?
A tax extension (Form 4868) moves your filing deadline from April 15 to October 15. It gives you 6 extra months to complete and submit your tax return.
Important: It does NOT extend the deadline to pay taxes owed. Any balance due must be estimated and paid by April 15.
How to File for an Extension
Option 1 – IRS Free File (free, electronic) Go to irs.gov and use Free File to submit Form 4868 electronically — no income limit for the extension form itself.
Option 2 – Tax Software TurboTax, H&R Block, TaxAct all offer a simple extension filing option.
Option 3 – Mail Form 4868 Download and print Form 4868 from irs.gov, complete it, and mail it postmarked by April 15.
Option 4 – Pay by April 15 and select “Extension” If you pay any estimated tax owed through IRS Direct Pay or EFTPS and select “Extension” as the payment type, this automatically grants you the extension — no separate form needed.
Do You Need a Reason?
No. The IRS grants extensions automatically — no explanation required. You do not need to contact the IRS or wait for approval.
Penalties If You Miss the Extended Deadline
If you file after October 15 without another approved extension:
- Late filing penalty: 5% of unpaid tax per month, up to 25%
- Interest continues to accrue on any unpaid balance
Who Should File an Extension?
- Missing W-2, 1099, or K-1 forms
- Complex tax situations (business income, rental properties, foreign income)
- Life events (illness, natural disaster, family emergency)
- Just not ready — no need for a specific reason
State Extensions
Many states automatically grant an extension if you get a federal extension. Others require separate state extension forms. Check your state’s rules.