How to File a Minnesota Tax Amendment

Instructions, Resources on how to prepare and e-File Minnesota Tax Returns or how to prepare an Extension and/or previous Year Tax Returns

Prepare, eFile a current tax year MN + IRS Tax Return: Detailed eFile.com Service Overview

Prepare only a MN State Return

File a current tax year Minnesota Tax Amendment

You cannot eFile a MN Tax Amendment anywhere, except mail it in.
Only Option: You need to complete, sign Form M1X for the appropriate Tax Year you are amending - Print, Mail the Form.
If changes were made to your Minnesota income tax return, mail your amended return to:
Minnesota Amended Individual Income Tax
Processing Center
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

MN Tax Amendment Form M1X
This Form can be used to file an: Income Tax Return, Tax Amendment, Change of Address. Check the proper check box on the Form.

Step 1: Select the MN Form M1X by Tax Year below
Step 2: Sign, Mail Form M1X to one of the addresses listed above

Current Tax Year only: Prepare online on eFile.com. When done Print, Sign and Mail in - not eFile - Your Tax Amendment, Address Change etc.

After the October deadline, Prepare, Print, Sign and Mail-In - see address above - your Form M1X.

How to correct a rejected Tax Return

If your MN Tax Return was rejected by the MN Tax Agency - not eFile.com - instructions on how to correct a rejected Minnesota Tax Return.

For all Tax Years prior to the current tax year, Prepare, Print, Sign and Mail-In - see address above - your Tax Amendment by Tax Year as soon as possible. You will also file an IRS Tax Amendment Form 1040X.

Check Your MN Tax Amendment Status

1. Call the Minnesota Department of Revenue at (800) 652-9094
2. Contact the MN Dep. of Revenue

Minnesota Refund Deadlines

A. Three years from the due date of the original tax year return, including valid filing extensions.
B. One year from the final determination of the amended federal return or federal change, whichever is later, provided that the allowable refund is not more than the decrease in Minnesota tax attributable to the federal change or correction.
C. Two years from the payment of an assessment, provided the amended return raises issues relating only to the prior assessment and the refund does not exceed the amount of tax paid on the prior assessment.
D. Two years from the filing of an amended Minnesota return resulting in the payment of additional tax, provided that the current amended return raises issues relating solely to the prior amended return and that the refund does not exceed the amount of the tax payment made as a result of the prior amended return.
Additional Minnesota Tax Income Taxes Deadlines

Minnesota Income Tax Penalties

Find out how Minnesota Late Filing and Late Payment Penalties are calculated.
For IRS Tax and Late Filing Penalties we have an easy to use tool: The PENALTYucator.

File an IRS Tax Amendment by Tax Year

Instructions on how to prepare an IRS Tax Amendment on eFile.com, however the IRS does not accept Tax Amendments electronically.