USTaxPenaltySaverQ1 2026: Rate Holds Steady at 7%
The IRS announced on November 21, 2025 that interest rates for Q1 2026 (January 1 through March 31) remain unchanged at 7% for individual taxpayers. This marks the fifth consecutive quarter at 7%, extending back to Q1 2025.
The rate applies to both underpayments (tax you owe the IRS) and overpayments (tax the IRS owes you). Corporate rates differ: 7% for underpayments, 6% for overpayments up to $10,000, and 4.5% for the portion of corporate overpayments exceeding $10,000. Large corporate underpayments carry a 9% rate.
For comparison, the rate was 8% throughout 2024, dropped to 7% in Q1 2025, and has remained there since. The current 7% rate is still historically elevated; from 2012 through 2017, the rate was just 3%.
Q2 2026: Rate Drops to 6%
The IRS announced in Rev. Rul. 2026-5, published February 17, 2026, that the interest rate for Q2 2026 (April 1 through June 30) is 6% for individual underpayments and overpayments. This is a decrease from 7% in Q1 2026 and marks the first rate change since Q1 2025.
The Q2 rate is based on the federal short-term rate for January 2026, which was 3% (rounded to the nearest whole percent based on daily compounding). Adding the statutory 3 percentage points gives the 6% underpayment rate. Corporate underpayments are also 6%, while corporate overpayments are 5% (3.5% for the portion exceeding $10,000). Large corporate underpayments are 8%.
The 1% drop from 7% to 6% reflects the Federal Reserve's rate cuts in late 2024 and 2025, which lowered the federal short-term rate. If you owe the IRS, your interest accrual starting April 1 is now lower. On a $10,000 balance, 6% saves you roughly $100 per year compared to 7%.
How Daily Compounding Works Against You
IRS interest is not simple interest. It compounds daily under IRC Section 6622. This means you pay interest on your interest, and the effective annual rate is slightly higher than the stated 7%. The daily rate is 7% divided by 365 = 0.01918% per day.
On a $10,000 balance, day one accrues $1.92 in interest. Day two accrues interest on $10,001.92, which is also $1.92 (the difference is tiny at first). But over a year, daily compounding on $10,000 at 7% produces approximately $725.08 in interest, compared to $700 with simple annual interest.
The effect is more pronounced over longer periods. Over 3 years without payment, a $10,000 balance grows to approximately $12,338 (23.4% total interest), not the $12,100 that simple interest would produce. This is why paying down your balance as quickly as possible saves you more than the headline rate suggests. Use our interest calculator to see the exact cost on your balance.
Real Dollar Impact at 7%
Here is what 7% interest costs on common IRS balance amounts over various time periods. These figures include daily compounding and are approximate.
On $5,000 owed: 3 months costs about $88, 6 months costs about $178, 1 year costs about $363, 2 years costs about $753. On $10,000 owed: 3 months costs about $177, 6 months costs about $357, 1 year costs about $725, 2 years costs about $1,505. On $25,000 owed: 3 months costs about $442, 6 months costs about $893, 1 year costs about $1,813, 2 years costs about $3,762.
These interest charges are in addition to any failure-to-file or failure-to-pay penalties. The combined cost of penalties and interest can be substantial. Use our free interest calculator to see the exact impact on your specific balance and timeline.
How to Reduce Your Interest Burden
Pay as much as possible, as soon as possible. Interest stops accruing on the portion you pay. If you owe $10,000 and pay $7,000 today, interest only accrues on the remaining $3,000. Even partial payments save money.
Set up a payment plan. While interest continues during an installment agreement, the failure-to-pay penalty rate drops from 0.5% to 0.25% per month, cutting the penalty portion in half. Apply online at IRS.gov/opa for balances of $50,000 or less.
Consider paying with a personal loan. If you can get a personal loan at less than 7%, paying off your IRS balance and repaying the loan may cost you less overall. Compare the IRS rate (7% compounded daily, plus penalties) against available loan rates.
Request interest abatement if the IRS caused the delay. Under IRC Section 6404(e), the IRS must abate interest attributable to unreasonable errors or delays by IRS employees in performing ministerial or managerial acts. If the IRS took years to process your return or lost your correspondence, you may qualify.
Historical IRS Interest Rates (2020-2026)
The IRS interest rate has fluctuated significantly: Q1-Q3 2020: 5%, Q4 2020 through Q4 2021: 3%, Q1-Q2 2022: 4%, Q3 2022: 5%, Q4 2022: 6%, Q1 2023: 7%, Q2-Q4 2023: 8%, Q1-Q4 2024: 8%, Q1-Q4 2025: 7%, Q1 2026: 7%, Q2 2026: 6%.
The rate tracks the Federal Reserve's federal funds rate with a lag. As the Fed raised rates aggressively in 2022-2023, the IRS rate climbed from 3% to 8%. The slight decline to 7% in 2025 reflected the Fed's rate cuts beginning in late 2024. If the Fed continues to cut rates, the IRS rate may eventually drop below 7%, but the lag means changes appear 1-2 quarters after Fed action.
Key Takeaways
The IRS interest rate for Q1 2026 was 7%, unchanged from 2025. The Q2 2026 rate dropped to 6% per Rev. Rul. 2026-5, ending five consecutive quarters at 7%. The federal short-term rate for January 2026 was 3%, down from 4%.
At 7% compounded daily, a $10,000 IRS balance costs about $725 per year in interest alone, on top of any penalties. The most effective way to reduce interest is to pay your balance down as quickly as possible.
Use our free interest calculator to see the exact impact of the current rate on your balance. If the IRS caused delays in your case, you may qualify for interest abatement under IRC Section 6404(e).