IRS Sets 7% Interest Rate for Tax Overpayments and Underpayments

The Internal Revenue Service (IRS) has announced that the interest rate for tax underpayments and overpayments will remain at 7 percent for individual taxpayers for the fourth quarter of 2026. This rate, which also applies to corporate underpayments, takes effect on October 1. Additionally, the IRS introduced an Automatic Exemption from Penalty (AEP) program to streamline penalty relief for eligible taxpayers, aiming to simplify the tax payment process.

Key takeaways
The IRS confirmed a 7 percent interest rate for individual tax overpayments and underpayments for Q4 2026, unchanged from Q3.
Corporate overpayment rates are set at 6 percent, with a 4.5 percent rate for portions exceeding $10,000, while large corporate underpayments face a 9 percent rate.
A new Automatic Exemption from Penalty (AEP) program has been introduced, offering automatic relief for eligible taxpayers with a history of timely filing and payment.
The AEP program will phase out the previous First Time Abate (FTA) relief system, with a transition period allowing taxpayers to request FTA for certain past returns.

Table of Contents
Understanding IRS Interest Rates
New Automatic Penalty Relief Program
Transitioning from First Time Abate (FTA) to AEP
Why These Changes Matter for Taxpayers
What to Watch Next
Frequently Asked Questions

Understanding IRS Interest Rates

The IRS charges interest on tax underpayments when taxpayers fail to pay their taxes, penalties, and other charges on time. Conversely, the agency pays interest on overpayments when taxpayers have paid more tax than they actually owe. These rates are determined quarterly and are influenced by the federal short-term rate.

For the fourth quarter of 2026, the interest rate for individual taxpayers on both underpayments and overpayments is 7 percent, a figure that remains consistent with the third quarter. This rate is calculated by adding 3 percentage points to the federal short-term rate, which was determined to be 4 percent for July.

For corporations, the structure of interest rates is slightly different. The overpayment rate is 6 percent. However, for the portion of a corporate overpayment exceeding $10,000, the rate is 4.5 percent. This specific rate is derived by adding only 0.5 percentage point to the federal short-term rate. The corporate underpayment rate is also 7 percent, matching the individual taxpayer rate, but large corporate underpayments incur a higher rate of 9 percent.

Interest on underpayments begins to accrue on the due date of the amount owed and continues until the balance is paid in full. For overpayments, interest calculation considers factors such as the tax filing due date, payment dates, and when the IRS successfully processes a return. Taxpayers who believe they received insufficient overpayment interest can file claims.

New Automatic Penalty Relief Program

In a significant move to simplify tax administration, the IRS has introduced a new automatic penalty relief process known as the Automatic Exemption from Penalty (AEP). This program is designed to provide relief from common penalties without requiring taxpayers to proactively request it.

The AEP program is available to eligible taxpayers who have a consistent history of compliance. Specifically, taxpayers who filed and paid their taxes on time during the previous three years, or during 12 consecutive quarters for those who file quarterly, may qualify. Those who meet these criteria will automatically receive relief from penalties such as failure to file, failure to pay, and failure to deposit.

When the IRS applies AEP to an eligible tax return, the taxpayer will receive a notice confirming that the relief has been granted. This automatic process aims to reduce the administrative burden on both taxpayers and the agency, reflecting an effort to make the payment of taxes owed simpler and more consistent, according to IRS CEO Frank J. Bisignano. He noted that taxpayers with a history of paying on time should not have to formally request relief that would routinely be granted.

Transitioning from First Time Abate (FTA) to AEP

The introduction of the AEP program marks a shift away from the long-standing First Time Abate (FTA) relief system. In a statement on July 8, the IRS indicated that it would begin phasing out the FTA system in favor of AEP during the summer. Under the previous FTA system, taxpayers were required to contact the agency directly before the IRS would review their account to determine eligibility for relief.

The AEP program streamlines this process by making it automatic for qualified taxpayers, eliminating the need for direct contact to initiate relief. During this transition period, some taxpayers who are eligible for AEP may still receive penalty notices related to their 2025 or 2026 returns. In such instances, the IRS advises these taxpayers to contact the agency and request FTA relief, indicating a temporary overlap in the availability of both relief mechanisms.

Why These Changes Matter for Taxpayers

The stability of the IRS interest rate at 7 percent for individual overpayments and underpayments provides a clear benchmark for taxpayers managing their financial obligations. For those who anticipate owing taxes, understanding this rate is crucial for calculating potential interest charges. Conversely, taxpayers due a refund can better estimate the interest they might receive on their overpayments. The differentiated rates for corporations also highlight the specific considerations businesses must make in their tax planning.

The introduction of the Automatic Exemption from Penalty (AEP) program represents a significant improvement in taxpayer service. By automating penalty relief for compliant taxpayers, the IRS aims to foster a more positive and efficient interaction. This change could reduce stress and administrative effort for many, reinforcing the idea that consistent compliance is recognized and rewarded. For readers following broader general market briefs , such administrative changes can influence overall financial planning and compliance costs.

What to Watch Next

Taxpayers and financial professionals should monitor any further IRS announcements regarding the implementation of the AEP program and the complete phase-out of the FTA system. While the current interest rates are set for the fourth quarter of 2026, these rates are determined quarterly, so future adjustments based on changes in the federal short-term rate are possible. Staying informed about these quarterly updates will be important for accurate tax planning and financial forecasting.

Frequently Asked Questions

What is the IRS interest rate for individual taxpayers?

For the fourth quarter of 2026, the IRS interest rate for both individual tax overpayments and underpayments is 7 percent, remaining unchanged from the previous quarter.

How are corporate interest rates structured?

Corporate overpayments are subject to a 6 percent interest rate, with a 4.5 percent rate applied to the portion of an overpayment exceeding $10,000. Corporate underpayments carry a 7 percent rate, while large corporate underpayments are at 9 percent.

What is the Automatic Exemption from Penalty (AEP) program?

The AEP program is a new IRS initiative that automatically grants relief from common penalties (like failure to file or pay) to eligible taxpayers who have a history of timely filing and paying their taxes over the past three years or 12 consecutive quarters.

How does AEP differ from First Time Abate (FTA) relief?

AEP provides automatic penalty relief without requiring taxpayers to contact the IRS, whereas under the previous FTA system, taxpayers had to proactively request relief. The IRS is phasing out FTA in favor of AEP.

Read original source