Does the IRS Pay Interest on Late Tax Refunds?

Waiting for a tax refund can be frustrating, especially when you were expecting the money weeks ago. Many taxpayers do not realize that in some cases, the IRS may actually owe interest on a delayed refund.

The IRS does not pay interest on every late refund. However, if your refund is delayed beyond a certain amount of time, interest may be added automatically.

Here is what taxpayers should know about IRS refund interest, when it applies, and what can cause refund delays.

When Does the IRS Pay Interest on a Tax Refund?

In general, the IRS may pay interest if it does not issue your refund within 45 days of the later of:

• The original tax return due date
• The date your tax return was filed
• The date a valid refund claim was submitted

For most taxpayers who file on time, this means the IRS has a 45-day window after the tax filing deadline to issue the refund without paying interest.

For example, if your tax return is due on April 15 and you file on time, the IRS generally has until around the end of May to issue your refund before interest may begin to apply.

Many people think refund interest starts immediately after the tax deadline, but that is not usually how it works. The IRS is generally allowed a 45-day processing period before refund interest is required.

How IRS Refund Interest Works

If the IRS owes interest on your refund, you usually do not have to request it. The IRS typically calculates the interest automatically and includes it with your refund.

The interest amount depends on several factors, including:

• The amount of your refund
• How long the refund was delayed
• The IRS interest rate during the delay period

IRS interest rates can change every quarter. For individual taxpayers, the overpayment interest rate is generally based on the federal short-term rate plus 3 percentage points.

Another important point is that IRS interest is generally compounded daily. That means interest can build on the refund amount and on previously added interest.

For small refunds or short delays, the interest may be minor. For larger refunds or long delays, the interest payment may be more noticeable.

Example of IRS Refund Interest

Let’s say you are owed a $5,000 tax refund, but the IRS takes several months longer than allowed to issue it.

Once the IRS refund interest period begins, the IRS may calculate interest until the refund is sent. The exact amount depends on the applicable interest rate and the number of days your refund was delayed.

Because IRS interest rates can change quarterly, a refund delayed across multiple quarters may involve more than one interest rate.

Why Tax Refunds Get Delayed

Most tax refunds are processed without major problems. However, some refunds take longer because the IRS needs more time to review the return.

Common reasons for refund delays include:

• Errors on the tax return
• Missing forms or schedules
• Incomplete information
• Identity theft or fraud reviews
• Amended tax returns
• Injured spouse claims
• Refund offsets for certain debts
• IRS processing backlogs
• Manual review by the IRS

Some delays are simple and resolve on their own. Others may require the taxpayer to respond to an IRS notice or provide additional information.

Amended Returns and Refund Interest

Amended tax returns can take longer to process than original returns. If an amended return results in an additional refund, the IRS may owe interest depending on the facts of the case.

The calculation can depend on when the overpayment happened, when the amended return was filed, and how long the IRS took to process the claim.

Because amended return rules can be more complicated, it may be helpful to speak with a tax professional if your amended refund has been delayed for a long time.

Does the IRS Pay Interest If the Delay Is Caused by an IRS Error?

In some cases, yes.

If your refund is delayed because of an IRS processing issue or IRS error, and the refund is issued after the allowed time period, interest may be added.

Examples may include:

• IRS data-entry issues
• System delays
• Processing backlogs
• Manual review delays
• Delayed correspondence processing

Again, the IRS usually calculates refund interest automatically when it applies.

Is IRS Refund Interest Taxable?

Yes. IRS refund interest is generally considered taxable income.

That means if the IRS pays you interest on a delayed refund, you may need to report that interest on your next federal tax return.

This can surprise taxpayers because the refund itself is usually not taxable in the same way. The interest, however, is treated separately.

How to Check the Status of Your IRS Refund

If you are waiting on your tax refund, the first step is to check the IRS refund tracker.

The IRS “Where’s My Refund?” tool can usually show whether your return has been received, approved, or sent.

You can typically check your refund status:

• 24 hours after e-filing
• About four weeks after mailing a paper return

If it has been more than 21 days since you e-filed, or more than six weeks since you mailed a paper return, and you still do not see an update, you may need to contact the IRS.

What If You Think the IRS Underpaid Your Interest?

If you believe the IRS should have paid interest, or paid more interest than you received, you may be able to ask for help.

In some cases, the IRS Taxpayer Advocate Service may be able to assist taxpayers dealing with delayed refunds or unresolved IRS issues.

However, before assuming the IRS made a mistake, it is important to understand why the refund was delayed. Some delays may affect when interest starts or whether interest applies at all.

When to Get Help with a Delayed Tax Refund

A delayed refund does not always mean something is wrong. But if your refund has been delayed for a long time, or if you received an IRS notice, it may be a sign that your tax return needs attention.

A tax professional can help you review the situation, understand what may be causing the delay, and determine whether any action is needed.

You may want help if:

• Your refund has been delayed for several months
• You received an IRS notice
• Your return is under review
• You filed an amended return and have not received a response
• You are dealing with identity verification
• Your refund was reduced or offset
• You believe the IRS owes you interest

Final Thoughts



The IRS may pay interest on delayed tax refunds, but only in certain situations. In most cases, interest may apply if the IRS takes more than 45 days after the applicable filing date or refund claim date to issue your refund.

The IRS usually calculates this interest automatically. However, refund delays can happen for many different reasons, and not every delay results in interest.

If you are waiting on a refund and are unsure what is causing the delay, getting professional guidance can help you better understand your options and avoid unnecessary confusion.