What Happens to Interest When the IRS Removes a Penalty?

Understanding IRS Penalties and Interest

The IRS charges penalties for various reasons, such as late filing, late payment, or inaccuracies on returns. According to IRS guidance, taxpayers may qualify for penalty relief if they demonstrate reasonable cause and acted in good faith. Reasonable cause is evaluated case-by-case based on specific facts and circumstances.

Separate from penalties, the IRS charges underpayment interest on any unpaid tax, penalties, or additions to tax from the due date until the balance is paid in full. Interest rates can change quarterly but apply consistently to prior periods once set.

How Penalty Abatement Affects Related Interest

When the IRS reduces or removes a penalty, it automatically adjusts the related interest charged on that penalty. This means any interest that had accrued specifically because of the penalty amount will be reduced or eliminated along with the penalty itself.

However, this automatic adjustment applies only to the interest linked to the abated penalty. Interest on the underlying unpaid tax continues to accrue daily until that tax is fully paid. Taxpayers should note that the IRS does not remove or reduce interest based on reasonable cause or first-time abatement relief.

Republic Tax Relief offers private tax-resolution services for individuals and businesses facing IRS or state tax issues. Readers with existing tax debt questions unrelated to this automatic interest adjustment may contact the firm for a free, no-obligation initial consultation to evaluate suitability, scope, fees, and availability of help communicating with the IRS.

Distinguishing Penalty Interest from Tax Interest

Interest linked to an abated penalty is the portion that accrued solely on the penalty balance. Once the penalty is removed, this associated interest is reversed automatically.

In contrast, interest on the underlying unpaid tax is calculated from the original return due date (or other applicable assessment dates) and remains in effect regardless of penalty relief. For example, failure-to-pay penalties may have different due dates than the tax itself, but interest on the tax principal continues independently.

This distinction is important because abating a penalty does not stop interest from growing on any remaining tax owed.

Requesting Penalty Relief and Next Steps

To request penalty relief, contact the IRS by phone using the number on your notice, providing the notice details, the specific penalty, and an explanation of your reasonable cause with supporting documentation. If phone approval is not possible, submit Form 843, Claim for Refund and Request for Abatement, in writing.

If the IRS denies your penalty relief request, follow the appeal procedures outlined in penalty appeal eligibility guidance. Paying what you can now and applying for a payment plan can help limit future penalties, though interest will continue on unpaid amounts.

For interest specifically resulting from an IRS error or delay, a separate abatement process exists using Form 843, but this is distinct from penalty-related adjustments.

Key Considerations for Taxpayers

Reducing a penalty through reasonable cause does not eliminate interest on the tax liability. Taxpayers should prioritize paying the tax balance to stop further interest accrual.

Always maintain records of events, attempts to comply, and supporting documents when seeking relief. The IRS evaluates requests individually and may apply first-time abatement if it fits instead of reasonable cause.