The IRS does not pay interest on most tax refunds
When you get a tax refund, you receive only the amount you overpaid in taxes. The IRS does not add interest to that refund as a reward for waiting. If you overpaid $2,000, you get $2,000 back — not $2,000 plus interest.
The only time the IRS pays interest on a refund is when the agency itself caused the delay. This happens rarely and only under specific circumstances: the IRS lost your return, made a processing error, or took longer than the law allows to send your money. Even then, interest accrues only after a certain number of days have passed.
Understanding when and how the IRS pays interest matters because it affects how long you should wait before contacting the agency about a missing refund, and what you can demand if the delay was the IRS's fault.
Key Takeaways
- The IRS pays no interest on refunds that arrive on time, even if you filed early and waited months for your money.
- Interest accrues only when the IRS is responsible for a delay — such as losing your return, making an error, or processing it slower than federal law allows.
- The IRS interest rate changes quarterly and is tied to the federal short-term rate; as of early 2024, it ranges from 8 percent to 9 percent annually.
- Interest on delayed refunds is calculated from the original due date of your return, not from the date you filed.
- You do not need to request interest; if the IRS owes it, the agency includes it automatically when your refund is issued.
When the IRS pays interest on refunds
The IRS pays interest only when it fails to issue your refund within a set timeframe. Federal law requires the IRS to refund overpaid taxes within 45 days of receiving your return. If the agency misses this deadline and the delay is its own fault, interest begins to accrue.
Common reasons the IRS might owe interest include: the agency lost or misfiled your return, made a math error that delayed processing, flagged your return for review without cause, or experienced a system failure. If you filed on time and the IRS simply took longer than 45 days to process a straightforward return with no errors, you may be owed interest.
If you filed an amended return (Form 1040-X), the timeline is different. The IRS has up to 120 days to process an amended return before interest begins to accrue on any refund owed.
How the IRS calculates interest on refunds
The IRS interest rate is set by law and changes every three months. The rate is the federal short-term rate plus 3 percentage points. As of 2024, the IRS rate has ranged from 8 percent to 9 percent annually, but this varies by quarter and year.
Interest is calculated daily from the original due date of your return — typically April 15 for most taxpayers — not from the date you filed. So if you filed in February and the IRS delayed issuing your refund until September due to an error, interest would accrue from April 15 onward, not from February.
The calculation is straightforward: (refund amount) × (annual interest rate) ÷ 365 × (number of days delayed). For example, a $3,000 refund delayed 120 days at 8 percent interest would earn roughly $79 in interest.
How to know if your refund is delayed
The IRS provides a tool called Where's My Refund? on its website (irs.gov). You can enter your Social Security number, filing status, and the exact refund amount to see the status of your return. This tool updates once per day, usually overnight.
If the tool shows your return is still being processed after 21 days from when you filed electronically (or 45 days if you mailed a paper return), contact the IRS directly. Call the refund hotline at 1-800-829-1954 or visit a local IRS office. Have your return and any correspondence from the IRS ready.
Document the date you filed, the date you checked the status, and any error messages or delays the IRS reports. This record matters if you later need to claim interest owed to you.
Requesting interest when the IRS owes it
You do not need to file a separate form to request interest on a delayed refund. If the IRS owes interest, the agency calculates it and includes it in your refund check or direct deposit automatically. The interest arrives as part of the same payment.
However, if you believe the IRS owes interest and your refund has already been issued without it, you can file Form 843 (Claim for Refund and Request for Abatement) to request the interest owed. Include documentation of when you filed, when the IRS processed your return, and why the delay was the IRS's fault.
Mail Form 843 to the IRS address listed in the instructions, or file it electronically if you use tax software. The IRS typically responds within 30 to 60 days, though complex cases may take longer.
Interest on refunds from amended returns
If you file an amended return and are owed a refund, the same interest rules apply — but the timeline is longer. The IRS has 120 days to process an amended return before interest begins to accrue. After 120 days, interest accrues at the same quarterly rate as regular refunds.
Amended returns often take longer to process than original returns because they require manual review. If your amended return is delayed beyond 120 days, the IRS owes interest from day 121 onward, calculated from the original due date of your tax year (April 15).
Interest on stimulus payments and advance refunds
Stimulus payments (Economic Impact Payments) and advance refunds — such as the Child Tax Credit advance payments issued in 2021 — do not earn interest if delayed. These are not tax refunds; they are government payments. The IRS does not pay interest on them even if they arrive late.
If you did not receive a stimulus payment or advance refund you were owed, you can claim it on your tax return, but you will not receive interest on the delayed payment. The only recourse is to ensure the payment is credited to your account when you file.
Frequently Asked Questions
Can I earn interest by filing my taxes early and waiting for my refund?
No. The IRS does not pay interest on refunds that arrive on time, regardless of how early you filed. Filing in January instead of April does not earn you interest — you simply wait longer for the same refund amount.
What if the IRS took six months to process my return?
If the delay was the IRS's fault and exceeded 45 days (or 120 days for amended returns), you are owed interest. The interest rate is set quarterly by the IRS and is currently between 8 and 9 percent annually. Contact the IRS or file Form 843 to claim the interest.
Does interest accrue if I owe taxes instead of getting a refund?
No. Interest only applies to refunds the IRS owes you. If you owe taxes and pay late, you pay interest to the IRS — not the other way around.
How long does it take to receive interest once the IRS owes it?
If the IRS owes interest, it is included in your refund automatically — no separate check or deposit. If you file Form 843 to claim interest the IRS did not include, expect a response within 30 to 60 days, though some cases take longer.
What is the current IRS interest rate?
The IRS interest rate changes quarterly and is tied to the federal short-term rate plus 3 percentage points. As of early 2024, the rate ranges from 8 to 9 percent annually. Check irs.gov for the current quarter's rate, which is posted on the agency's interest rates page.