# IRS refund received in error: how to send it back

Source: https://taxrefunddesk.com/missing-refunds/irs-refund-received-in-error
Publisher: Tax Refund Desk (taxrefunddesk.com), independent editorial site
Topic: Missing Refunds
Last updated: 2026-09-19

> If you have an IRS refund received in error, return it promptly: write Void on the back of an uncashed check and mail it within 21 days to the IRS office for your state, repay a cashed check with your own check or money order, or have your bank's ACH department send back a direct deposit. Interest can build on a refund you keep.

## Key facts

- Deadline the IRS gives for returning a check: Within 21 days
- Uncashed check: Write Void on the back and mail it with a short note
- Cashed check: Repay by personal check or money order
- Direct deposit: Bank ACH department returns it; call the IRS to explain
- Interest abatement limit: Erroneous refunds of $50,000 or less you did not cause (IRC 6404(e)(2))

## What counts as a refund received in error?

An erroneous refund is money the IRS paid you that you are not entitled to. IRS Tax Topic 161 says that if you receive a refund you are not owed, or a refund the IRS increased by mistake, you must return it promptly, and Tax Topic 152 repeats that duty.

Not every surprise is an error. The IRS sometimes corrects a return in your favor, for example by fixing a math mistake or allowing a credit you missed, and it mails a notice explaining the change. A larger refund with a matching notice is money you can keep.

| What you see | Likely explanation | What to do |
| --- | --- | --- |
| Larger refund plus a notice explaining an adjustment | Legitimate IRS correction | Read the notice; keep the refund if you agree |
| Larger refund with no notice at all | Possible error | Check your transcript before spending it |
| A second payment after a trace or reissue | Duplicate refund | Return one; Form 3911 requires this |
| Refund for a return you never filed | Possible identity theft | Do not spend it; report it to the IRS |
| Deposit in someone else's name in your account | Misdirected refund | Ask your bank to return it |
| Small extra amount labeled interest | Refund interest the IRS owed you | Usually keep it, and report it as income |

Error or legitimate change?

## Signs a refund was sent in error

Compare the deposit or check with the refund amount you claimed on your Form 1040. A difference of more than a few dollars, with no IRS notice to explain it, is the first sign. Your IRS online account and tax account transcript show every refund issued, so a second refund transaction for the same year stands out.

- Two refunds arrived for the same year, often after a lost check was replaced and the original later turned up.
- The payee name on the check is not yours, or the deposit description shows another person's name.
- The refund belongs to a person who has died; see the [deceased taxpayer refund guide](https://taxrefunddesk.com/missing-refunds/deceased-taxpayer-refund) before deciding it is an error.
- You received a refund for a year you never filed.

If you did not file the return that produced the refund, treat it as possible identity theft. Do not cash the check. Return it as described below, and file Form 14039, Identity Theft Affidavit, as the IRS instructs on its CP53B and CP53D notice pages.

## Returning a paper refund check you have not cashed

An uncashed erroneous check is the easiest case. Tax Topic 161 sets out these steps.

Send it to the IRS office for your state. Tax Topic 161 points to the same regional addresses used for Form 3911, listed on the [Form 3911 guide](https://taxrefunddesk.com/missing-refunds/form-3911-refund-trace). Use a trackable mail service so you can prove the date.

If only part of the check is wrong, say so in your note and state the amount you expected, so the IRS knows you are still owed the rest.

## Returning a check you already cashed

If you deposited the check before noticing the mistake, repay the IRS with a personal check or money order, also within 21 days, sent to the same state office. On the payment, write: Payment of Erroneous Refund, the tax year the refund was for, the account type (IMF for an individual), and your Social Security number. Include a short explanation of why you are returning the money.

Worked example: you claimed a refund of $1,650 on your 2025 return and your bank shows a Treasury check deposit of $4,650, with no notice from the IRS. The extra $3,000 is the erroneous part. Your payment would read Payment of Erroneous Refund, 2025, IMF, followed by your SSN, with a note that you claimed $1,650 and received $4,650. If you are unsure which amount to send, call the IRS before paying.

## How do I return a direct-deposited refund?

Contact the ACH department of the bank that received the deposit and ask it to return the funds to the IRS. Then call the IRS at 800-829-1040, the individual line listed in [Tax Topic 161](https://www.irs.gov/taxtopics/tc161), to explain that the deposit was sent in error and is being returned.

1. Note the deposit date, the amount and the description line on your statement.
2. Ask your bank's ACH or deposit operations team to return the payment to the Treasury, and get a reference number.
3. Call the IRS individual line to report the return and why it happened.
4. Do not move or spend the money while the return is pending.
5. Keep a written record of both calls with dates and names.

> **Only use official channels:** Return money only through your bank or directly to the IRS as Tax Topic 161 describes. Never send it to a person who calls, texts or emails to say a refund was deposited in error and asks for payment another way.

The reverse problem, a refund that went to someone else's account, is covered in [refund sent to the wrong bank account](https://taxrefunddesk.com/missing-refunds/refund-sent-wrong-account), and a deposit you expected but cannot find is covered in [refund sent but not in the bank](https://taxrefunddesk.com/missing-refunds/refund-sent-not-in-bank).

## Will I owe interest on an erroneous refund?

You may. Tax Topic 161 warns that interest can accrue on an erroneous refund that was cashed or deposited. Under Internal Revenue Code section 6404(e)(2), however, the IRS must waive interest on an erroneous refund up to the date it demands repayment, as long as the refund is $50,000 or less and neither you nor a related party caused it in any way.

| Situation | Interest before IRS demand | Interest after IRS demand |
| --- | --- | --- |
| $50,000 or less, IRS error, you did not cause it | Waived by law | Can accrue |
| $50,000 or less, caused by your return or input | Can accrue | Can accrue |
| Over $50,000 | Can accrue | Can accrue |

How interest applies to a refund kept by mistake

The simplest way to avoid interest is to return the money before the IRS has to ask. IRS interest rates reset every quarter; the individual overpayment rate is 7% a year, compounded daily, for the quarter starting October 1, 2026, and the rate for the first quarter of 2027 is not yet announced (usually published in late November).

## Refund interest received in error: do you have to return it?

Usually not. The IRS generally has 45 days to issue a refund without interest; after that it adds overpayment interest, so a refund paid late can be larger than the amount you claimed. That extra is money the IRS owed you, not an error. It is taxable income, as explained in [is refund interest taxable](https://taxrefunddesk.com/refund-options/refund-interest-taxable).

Interest can be part of an erroneous refund only when the underlying refund was itself wrong. If you return an erroneous refund that included interest, return the full amount paid and say so in your note.

## Step by step

1. **Confirm it is an error.** Look for an IRS adjustment notice and compare the payment with the refund on your return.
2. **Uncashed check.** Write Void on the back, add a note, and mail it within 21 days to the IRS office for your state without stapling or folding.
3. **Cashed check.** Send a personal check or money order marked Payment of Erroneous Refund with the tax year, IMF and your SSN.
4. **Direct deposit.** Ask your bank's ACH department to return the funds, then call the IRS to explain.
5. **Keep records.** Save copies, tracking numbers and call notes until your account shows the return posted.

## Common questions

### What do I do if the IRS sent me too much money?

First check for an IRS notice explaining an adjustment. If there is none and the extra amount is not interest, return it: void and mail an uncashed check within 21 days, repay a cashed check with your own check, or ask your bank to return a deposit.

### Can I just keep an IRS refund sent by mistake and wait for them to ask?

You are required to return it promptly. Waiting can add interest once the IRS demands repayment, and the full interest waiver applies only to refunds of $50,000 or less that you did not cause.

### Where do I mail an erroneous refund check?

To the IRS refund inquiry office for your state, the same addresses listed for Form 3911. Write Void on the back of an uncashed check and include a short note.

### Should I write Void on the front or back of an erroneous IRS check?

On the back, in the endorsement area, according to Tax Topic 161. Do not staple, bend or paper-clip the check.

### I received two refunds for the same year. Which one do I send back?

Send back one. If you cashed neither, return the older or duplicate check marked Void with a note. When you sign Form 3911 you certify that you will return one refund if two arrive.

## Sources

- [Tax Topic 161, Returning an erroneous refund](https://www.irs.gov/taxtopics/tc161)
- [Tax Topic 152, Refund information](https://www.irs.gov/taxtopics/tc152)
- [26 U.S. Code 6404, Abatements](https://uscode.house.gov/view.xhtml?req=granuleid:USC-prelim-title26-section6404&num=0&edition=prelim)
- [IRS: Interest](https://www.irs.gov/payments/interest)
- [Interest rates remain the same for the fourth quarter of 2026](https://www.irs.gov/newsroom/interest-rates-remain-the-same-for-the-fourth-quarter-of-2026)