Amending a Property Tax Refund

The deadline for filing Form M1PRX is 3.5 years from the due date of your Minnesota income tax return for the same year. For example:

• Income Tax due date: April 15, 2020
• Form M1PRX due date: October 15, 2023

Yes. If you amend your return, you will receive or pay back the difference plus interest.
If your amended return:

• Reduces your refund, calculate interest from the date you received your refund
• Increases your refund, calculate interest from one of the following dates, whichever is later:
  • 60 days after you filed the original return
  • August 15 for renters or September 30 for homeowners

To find our interest rates for recent years, see Interest Rates.

You may file Form M1PRX before we process your original return. Your refund may be delayed while we match up and process your original and amended returns.

For more information about amending your Property Tax Refund, see Form M1PRX instructions.