Note: You must complete a separate Form 3911 for each refund for which you are requesting information. Use Form 843 to claim a refund or request an abatement of certain taxes, interest, penalties, fees, and additions to tax.Check the box below that indicates your reason for filing Form 843. Tax. Abatement or refund of tax other than income, estate, or gift tax. Step 1: Complete the taxpayer information section. You can get in-person help at your local IRS Taxpayer Assistance Center. Call for an appointment after you find a Taxpayer Assistance Center near you. The primary letter we use to request information about a return is Form DTF948 or DTF948O, Request for Information (RFI). The Form 1098-T, Tuition Statement, is issued to help determine if students or their parents are eligible to claim tax credits under the Tax Relief Act of 1997. The Where's my refund?