How to File a Mississippi Tax Amendment

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

Prepare, eFile a 2020 MS + IRS Tax Return: Detailed eFile.com Service Overview

Prepare only a MS State Return without an IRS return. Details

Step by Step instructions on how to only Prepare and Download - not eFile - State Returns on eFile.com.

File a 2020 Mississippi Tax Amendment

You cannot eFile a MS Tax Amendment anywhere, except mail it in. However, you can prepare it here on eFile.com.
Option 1: Sign into your eFile.com account, modify your Return and download/print MS Form 80-105 (residents) or 80-205 (nonresidents and part-year residents) under My Account. Check the "Amended" box to indicate that it's an amended tax return. 
Option 2: If you don't have an eFile.com account follow the step by step instruction on how to prepare a tax return/amendment.
Option 3: If you want to do the math on your own paper return then complete, sign MS Form 80-105 (residents) or 80-205 (nonresidents and part-year residents) - Print, Mail the Form to MS Depart. of Revenue to:
Refund Tax Amendment
Department of Revenue
Post Office Box 23058
Jackson, MS 39225-3058
No Refund or Including Tax Payment Tax Amendment
Department of Revenue
Post Office Box 23050
Jackson, MS 39225-3050

MS Tax Amendment Forms 80-105 and 80-205
These Forms can be used to file a: Tax Return, Tax Amendment, Change of Address.  Check the "Amended" box to indicate that it's an amended tax return. 

Step 1: Download, Complete Form 80-105 or 80-205 for the appropriate Tax Year below.
Step 2: Sign, Mail Form 80-105 or 80-205 to one of the addresses listed above

Tax Year 2020 only: Prepare online on eFile.com until Oct. 15, 2021. When done Print, Sign and Mail in - not eFile - Your Tax Amendment, Address Change, etc.

After Oct. 15 Prepare, Print, Sign and Mail-In - see address above - your Tax Year 2020 - Form 80-105 or 80-205.

How to correct a rejected Tax Return

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

For all Tax Years prior to 2020 Prepare, Print, Sign and Mail-In - see address above - your Tax Amendment as soon as possible. If you are a resident, select Form 80-105. For nonresidents and part-year residents, use Form 80-205. You will also file an IRS Tax Amendment Form 1040X.

Check Your MS Tax Amendment Status

1. Call the Mississippi Department of Revenue at (601) 923-7000.
2. Contact the MS Department of Revenue

Mississippi 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 Mississippi 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 Mississippi 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 Mississippi Tax Income Taxes Deadlines

Mississippi Income Tax Penalties

Find out how Mississippi 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.