The most common reason: money you owe was subtracted from your refund
The IRS can use your refund to pay debts you owe to the federal government or your state. These debts are subtracted before you receive the money. The most common ones are unpaid federal or state income taxes from earlier years, unpaid student loans that are in default, and child support or spousal support that is past due.
When the IRS takes money from your refund to cover a debt, you receive a notice in the mail explaining what was taken and why. This notice arrives separately from your refund, usually within two weeks. If you did not receive one, contact the IRS at 1-800-829-1040 to ask what happened to your refund.
If your refund was reduced and you believe the debt is not yours or has already been paid, you can dispute it. The process depends on the type of debt — student loan disputes go through the Department of Education, child support disputes through your state's child support agency, and tax debt disputes through the IRS directly.
Key Takeaways
- The IRS subtracts unpaid federal taxes, defaulted student loans, and past-due child support from your refund before sending it to you.
- You will receive a separate notice in the mail explaining what was taken and the reason.
- If you received less than you expected, check your notice or call the IRS at 1-800-829-1040 to find out what reduced your refund.
- You can dispute a debt offset if you believe the debt is not yours or has already been paid, but the process varies by debt type.
- State tax refunds can also be reduced for state debts, and your state tax agency will send a separate notice.
Unpaid taxes from previous years
If you owe federal income tax from any year before this one, the IRS will subtract what you owe from your current refund. The same applies to state income tax — your state will reduce your state refund if you owe state taxes from an earlier year.
You can find out how much you owe by logging into your IRS account at irs.gov or calling 1-800-829-1040. Your state tax agency has a similar tool on its website. Both will show you the year the debt is from and the amount.
If you dispute the debt — for example, you believe you already paid it or the amount is wrong — you can file a protest with the IRS. You have 60 days from the date on your notice to do this. The IRS will review your case, but the process takes several months.
Defaulted student loans
Federal student loans in default can be offset against your tax refund through the Treasury Offset Program. This means the Department of Education can direct the IRS to send your refund to the loan servicer instead of to you. You will receive a notice from the Department of Education explaining the offset.
To stop future offsets, you can rehabilitate your loan by making nine on-time monthly payments, consolidate your loan into a new federal loan, or set up a repayment plan. Each option has different requirements and timelines. Contact your loan servicer or the Federal Student Aid office at 1-800-4-FED-AID to discuss which option works for your situation.
If you believe your loan is not in default or the offset was made in error, you can request a hearing with the Department of Education within 65 days of the offset notice. This is called a due process hearing, and you can request it by mail or phone.
Past-due child support or spousal support
If you owe child support or spousal support that is past due, your state's child support agency can request that the IRS offset your refund. The amount taken goes to the person you owe support to, not to the government. You will receive a notice from your state's child support agency explaining the offset.
To stop offsets, you need to bring your support payments current or work out a payment plan with the agency. Contact your state's child support enforcement office — you can find it through your state's website or by calling 1-800-4-CHILD.
If you believe the debt is not yours or the amount is wrong, you can request a hearing with your state's child support agency. You have 65 days from the offset notice to request one. The agency will tell you how to request a hearing in the notice itself.
Changes to your income or deductions after you filed
The IRS sometimes adjusts your refund after you file if they find an error on your return or if you reported information that did not match their records. Common reasons include unreported income, an incorrect Social Security number for a dependent, or a math error on the return itself.
If the IRS made a change, they send you a notice called a CP2000 or similar. This notice explains what they found and how much your refund changed. You have 30 days to respond if you disagree with the change.
If you agree with the change or do not respond, the IRS will adjust your refund and send you the reduced amount. If you disagree, you can respond to the notice with documentation supporting your original return — for example, a 1099 form showing the income was already reported, or a birth certificate for a dependent.
Unclaimed tax credits you did not report
If you did not report a tax credit you were may have access to to, your refund will be smaller than it could have been. Common credits people miss are the Earned Income Tax Credit (EITC), the Child Tax Credit, and the American Opportunity Tax Credit for education expenses.
You can amend your return to claim a credit you missed. File Form 1040-X, the Amended U.S. Individual Income Tax Return, with the IRS. You have three years from the date you filed your original return to amend it and claim the credit.
If you are unsure whether you were may have access to to a credit, the IRS website has a tool called the EITC Assistant that walks you through the rules. You can also call 1-800-829-1040 and ask a representative to review your return.
Estimated tax payments or prior-year credits applied to this year
If you made estimated tax payments last year or had credits left over from a previous year, the IRS may have applied them to your current year's taxes instead of including them in your refund. This reduces the refund you receive this year.
You can see whether this happened by looking at your tax return. Line 33 on Form 1040 shows your total tax. Lines 34 through 38 show payments and credits applied. If the total of lines 34 through 38 is higher than your tax on line 33, the difference is your refund.
If you did not want estimated payments or prior credits applied to this year, you would have needed to specify that when you filed. You cannot change this after the fact, but you can request that future estimated payments go toward next year's taxes instead.
Frequently Asked Questions
How do I know if the IRS offset my refund for a debt?
The IRS sends a notice in the mail within two weeks of offsetting your refund. The notice explains what debt was offset and how much was taken. If you did not receive a notice, call 1-800-829-1040 and provide your Social Security number and tax year.
Can I get my refund back if it was offset for child support I no longer owe?
If you have brought your support payments current or the debt has been forgiven, contact your state's child support agency and ask them to request that the offset be reversed. They can submit a request to the IRS, but this process takes several weeks. You may also request a hearing to dispute the offset amount.
What if I disagree with the IRS about how much I owe in back taxes?
You have 60 days from the offset notice to file a protest with the IRS. Include documentation showing why you believe the debt is wrong — for example, cancelled checks or receipts showing you paid it. Mail your protest to the address on the notice.
Can I prevent future offsets if I owe back taxes?
The only way to stop offsets is to pay the debt in full or set up a payment plan with the IRS. Contact the IRS at 1-800-829-1040 to discuss payment plan options. Once you are on a plan and making payments, offsets will stop.
Why did my state refund get reduced but not my federal refund?
Your state and federal refunds are handled separately. You may owe a state debt but not a federal one, or vice versa. Each agency offsets only against the refund it controls. Check the notice from your state tax agency to see what state debt was offset.