IRS Penalty & Interest Calculator

Our free IRS Penalty & Interest Calculator provides an instant, clear estimate of what you might owe. Stop guessing and start planning.

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Estimate potential penalties and interest for late filing or late payment of taxes.

Tax Information
Penalty Types *
Important Note: When both failure-to-file and failure-to-pay penalties apply for the same period, the failure-to-file penalty is reduced by the failure-to-pay penalty for that period.
Additional Details (Optional)
💳Payments & Credits
Note: Payments made after the due date reduce interest from the same day, and reduce FTP using the end-of-period balance.
🧾Tax Adjustments
Use negative value to reduce the balance (e.g., −500.00).
Results
This calculator provides estimates based on standard IRS rules. This is not legal advice. Consult a tax professional for complex situations.

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