Failure-to-File vs. Failure-to-Pay Penalties

That waiting to file until money is available is safer.

What is the difference between the IRS failure-to-file and failure-to-pay penalties?

Failure-to-file penalizes a late required return and is generally much steeper initially; failure-to-pay applies to unpaid tax and can continue after the return is filed, with coordination rules when both apply.

Start with the procedural stage

Procedural stage: Penalty / assessment

What happened: A required return and/or payment was late.

Controlling deadline: Failure-to-file is measured from the return due date including a valid filing extension; payment generally remains due by the original payment due date.

Right at risk: Correct penalty computation and access to AEP/FTA, reasonable cause or statutory relief where applicable.

Reconstruct the facts before choosing the response

What IRS knows / may use: Filing date, payment due/paid dates, balance, extension and prior compliance.

Taxpayer must reconstruct: Return due/filing dates, extension, tax shown, payments, installment agreement dates, penalty notices.

The rule and the response path

Technical rule: IRC §6651 controls. Current IRS guidance generally describes FTF at 5% per month (max 25%) and FTP at 0.5% per month, with interaction when both apply; statutory minimum late-filing amounts are date-sensitive.

Primary authority: IRC §6651; IRS — Failure to File Penalty; IRS — Failure to Pay Penalty.

Forms / notices / letters: Penalty notice; Account Transcript; Form 843 or other relief request when appropriate.

Response options: File immediately even if unable to pay; pay what is possible; establish a collection alternative; then analyze penalty relief.

Payment, amendment, penalties and interest

When payment matters: Partial/full payment directly reduces continuing FTP and interest exposure.

When payment does not resolve it: Payment does not erase an already accrued FTF penalty.

Amended return role: Not ordinarily relevant unless original liability is wrong.

Penalty / interest distinction: For approved installment agreements and timely filed returns, the FTP rate can be reduced under current law/guidance; exact conditions matter.

Common mistakes to avoid

• Hard-coding minimum penalties without tax-year label
• saying filing extension extends payment due date
• combining FTF and FTP rates incorrectly

What can change the answer

Facts that change answer: Extension; balance due; days/months late; fraud; installment agreement; prior compliance; disaster relief.

Do not overstate: Do not use current dollar minimums as evergreen figures.

Professional help: Useful for multiple years or substantial penalty-relief requests.

TAS role: Usually not primary unless hardship/system failure.

State consequences: State late-filing/payment penalties differ.

The PRISM principle

Failure-to-file penalizes a late required return and is generally much steeper initially; failure-to-pay applies to unpaid tax and can continue after the return is filed, with coordination rules when both apply.