If the tax refund you received was not as much as you expected, it may be because your refund or overpayment was reduced by the IRS or Financial Management Service (FMS) and offset to pay
If your debt is with the IRS, contact the IRS at 800-829-1040 with any questions regarding the reduction in your tax refund.
If your debt was submitted for offset by another agency, FMS will take as much of your refund as is needed to pay off the debt and send it to the agency you owe. Any portion of your refund remaining after offset will be issued in a check to you or direct deposited for you.
You can contact the agency with which you have a debt to determine if your debt was submitted for a tax refund offset, or you may call FMS at the 800–304–3107 or TDD 866–297–0517. The available hours are Monday through Friday 7:30AM to 5:00PM CT.