To claim a refund, you must file an amended return within 3 years after the date you filed your original return or 2 years after the date you paid the tax. Many find the easiest way to figure the entries for Form.X is to first make the changes in the margin of the return they are amending. The primary letter we use to request information about a return is Form DTF948 or DTF948O, Request for Information (RFI). New filing method for renters! Beginning with tax year 2024, renters will no longer file a Renter's Property Tax Refund return (Form M1PR). See below for forms and information about the two types of Minnesota Tax Court cases: MN Revenue appeals and MN property tax petitions. Here are some tips for completing the MNsure online application. Fill out and return the MNsure paper application DHS-6696 (PDF).