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How to Prepare and File a Minnesota Amended Tax Return

Minnesota State Taxes
amend Minnesota taxes
Minnesota
"The North Star State"

When Do I Need to File a Minnesota State Tax Amendment?

If you want to claim a refund, you must file your Minnesota amendment within 3.5 years of the original tax return due date. If you filed an amendment to your federal income tax return, then you should file your amended Minnesota return within 180 days.

How Do I Correct My Accepted Minnesota Tax Return or File a Minnesota Amendment?

In the state of Minnesota, if there is an error in your state income tax return, you must file an income tax amendment form. Here's how: 

  1. Download and complete Form M1X.
  2. Print out the form and mail it to one of these addresses: Minnesota Amended Individual Income Tax, Mail Station 1060, St. Paul, MN 55145-1060 (changes made to Minnesota tax return) or Minnesota Department of Revenue, Mail Station 7703, St. Paul, MN 55146-7703 (no changes made to Minnesota tax return).

Minnesota State Tax Amendment Forms (Download, Complete, Print Out, and Mail)

To amend your Minnesota state tax return, fill out Form M1X for the appropriate Tax Year.

If the changes in the federal tax return had an impact on your state income tax return, complete Form M1X and attach a copy of the amended federal tax return or a notice specifying the correction.

If the changes in the federal tax return didn't have an impact on your state income tax return, send a letter to the Minnesota Department of Revenue explaining the corrections and the lack of change in the state tax along with a copy of the amended federal tax return or a notice specifying the correction.

Form (Tax Year) Description
Form M1X (2016) Amended Minnesota Income Tax Form and Instructions
Form M1X (2015) Amended Minnesota Income Tax Form and Instructions
Form M1X (2014) Amended Minnesota Income Tax Form and Instructions
Form M1X (2013) Amended Minnesota Income Tax Form and Instructions
Form M1X (2012) Amended Minnesota Income Tax Form and Instructions
Form M1X (2011) Amended Minnesota Income Tax Form and Instructions

How Do I Check the Status of My Minnesota Tax Amendment?

You can call the Minnesota Department of Revenue at 800-652-9094.

What Are the Penalties, Interest, and Fees Associated with Amended Minnesota Tax Returns?

There are multiple penalties that the Minnesota Department of Revenue can impose on taxpayers. They include a penalty for failing to report changes, late payment penalty, late filing penalty, underpayment of estimated tax penalty, and penalty for fraudulently claiming a refundable credit.

If there were changes made to the federal tax return but none to Minnesota's tax return and there was no notification sent to the Minnesota Department of Revenue, then there is a 10% penalty on any extra tax that the taxpayer owes.

A late payment penalty is assessed if you don't pay your tax by the deadline. The penalty is assessed at 4% of the unpaid tax for the first 180 days, and then an additional penalty of 5% is assessed 180 days after the payment deadline.

A late filing penalty is assessed if you don't file by the deadline. The penalty is only assessed after October 15th, and is 5% of the unpaid tax.

An underpayment of estimated tax penalty is assessed when you don't pay all of your tax due and don't qualify for an exception. The penalty is determined by Schedule M15 Underpayment of Estimated Income Tax.

A penalty for fraudulently claiming a refundable credit is assessed when you file a false claim with the intention of getting a credit that you don't qualify for. The penalty is 50% of the fraudulently claimed refund as well as 50% of the tax that was underestimated and unpaid.

Minnesota department of Revenue computes interest for both delinquent or unpaid taxes, as well as refunds that were delayed or weren't paid to the taxpayer.

Interest Rates on Unpaid Taxes and Refunds

Year Interest on Unpaid Taxes Interest on Refunds
2017 4% 4%
2016 3% 3%
2015 3% 3%
2014 3% 3%
2013 3% 3%
2012 3% 3%
2011 3% 3%

Where Do I Mail My Minnesota Amended State Tax Return? - Minnesota Mailing Address:

If changes were made to your Minnesota income tax return, mail your amended return to:

Minnesota Amended Individual Income Tax
Mail Station 1060
St. Paul, MN 55145-1060

If no changes were made to your Minnesota income tax return mail your amended return to:

Minnesota Department of Revenue
Mail Station 7703
St. Paul, MN 55146-7703

Minnesota Department of Revenue Phone Number: 800-652-9094

Minnesota Department of Revenue

Where Do I Find More Information on Minnesota State Taxes?

How Do I Only File My Minnesota Tax Return?

Where is my Minnesota State Tax Refund?

Minnesota Tax Extension

Minnesota Tax Information

What If I Need to Fix My Accepted Federal Tax Return?

Learn how to file a federal tax amendment Form 1040X.