Application for Automatic Extension to File

Who Files Form 4868

Any individual taxpayer who needs more time to gather documents or complete an accurate return. Form 4868 extends the time to FILE only: the time to PAY is not extended, and any unpaid balance accrues interest and failure-to-pay penalties.

What Form 4868 Reports

The form requests an extension to October 15. It estimates the total tax liability for the year and any payment being made with the extension. There is no IRS penalty for filing an extension itself, only for unpaid balance.

Key Deadlines

• April 15: file Form 4868 by this date to receive the automatic extension
• October 15: extended filing deadline (no further extension available)

Common Mistakes

• Believing the extension also extends the payment deadline (it does not: interest and failure-to-pay penalties begin April 16)
• Underestimating total tax liability and incurring substantial interest by October
• Not paying state extension separately: most states require their own extension form
• Failing to attach Form 4868 confirmation to the eventually-filed return when needed

Best Practices

• Estimate your tax owed and PAY with the extension. The extension covers the time to file, not the time to pay, so unpaid balance accrues failure-to-pay penalty plus interest from April 16.
• File the extension electronically through tax software or IRS Free File. E-filed extensions are processed in seconds and create an audit trail.
• Use Direct Pay marked as Extension to combine the extension and the payment in one transaction.
• File a state extension separately for any state where you have a tax liability. The federal extension does not extend state filing deadlines.
• Treat October 15 as a hard deadline. Failure-to-file penalty (5 percent per month, max 25 percent) hits if the return is not filed by then.

Source: Official Form 4868 information at IRS.gov