How to File a Mississippi Tax Amendment

If you need to change or amend an accepted Mississippi State Income Tax Return for the current or previous Tax Year, you need to complete Form 80-105 (residents) or Form 80-205 (nonresidents and part-year residents). Forms 80-105 and 80-205 are used for the Tax Amendment. You can prepare a Mississippi Tax Amendment on However, you cannot submit it electronically. In comparison, the IRS requires a different Form - Form 1040X - to amend an IRS return (do not use Form 1040 for an IRS Amendment). 

If the IRS sends you a notification to change an error on your Federal Tax Return, you might have discovered an error on your own. If you or the IRS amend or change one of your IRS Tax Return(s), the IRS will report this to the Mississippi Tax Agency; thus, you should file a Mississippi Amendment within one year.

Prepare only an MS State Return without an IRS return. Details
Step by Step instructions on how to only Prepare and Download - not eFile - State Returns on
File a Mississippi Tax Amendment
You cannot eFile an MS Tax Amendment anywhere except mail it in. However, you can prepare it here on
Option 1: Sign in to your 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 an amended tax return. 
Option 2: If you don't have an account, follow the step-by-step instructions on preparing a tax return/amendment.
Option 3: If you want to do the math on your own paper return, then complete and sign MS Form 80-105 (residents) or 80-205 (nonresidents and part-year residents) - Print, Mail the Form to the MS Department 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, or Change of Address.  Check the "Amended" box to indicate 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
For current tax year only: Prepare online on until October deadline. When done Print, Sign, and Mail in - not eFile - Your Tax Amendment, Address Change, etc.
After October deadline, Prepare, Print, Sign, and Mail-In - see address above - your Form 80-105 or 80-205.
How to correct a rejected Tax Return
If the MS Tax Agency rejected your MS Tax Return - not - instructions on correcting a rejected Mississippi Tax Return.
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.
We have an easy-to-use tool for IRS Tax and Late Filing Penalties: The PENALTYucator.
File an IRS Tax Amendment by Tax Year
Instructions on preparing an IRS Tax Amendment on Remember, the IRS does not accept Tax Amendments electronically.

Will I get a bigger tax refund in 2024?

Many taxpayers can expect a bigger tax refund on their taxes in the years to come. To help you keep up with soaring inflation, the IRS is making more extensive changes than usual that could save you big money on your future taxes, which is the tax return you'll file next year.

Take control of your personal life relationships, finances, and taxes: follow the tips on this page and keep up with tax planning for next year. You can use this free Tax Refund Calculator to get a high-level understanding of your taxes.