Kansas Taxes Pages

How to Prepare and File a Kansas Tax Amendment

If you need to change or amend an accepted Kansas State Income Tax Return for the current or previous Tax Year you need to complete Form K-40. Form K-40 is a Form used for the Tax Return and Tax Amendment. You can prepare a current Kansas Tax Amendment Form on eFile.com, however you can not 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).

The IRS might send you a notification to change an error on your Return, or you might have discovered an error. If you or the IRS amended or changed one of your IRS Tax Return(s), the IRS will report this to the Kansas Tax Agency, thus you should file a Kansas Tax Amendment within one year.

Prepare only a KS 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 current Kansas Tax Amendment
You can prepare a Kansas Tax Amendment for the current tax year here on eFile.com; the amendment can not be e-filed. After you have prepared the amendment, download the PDF from your My Account, check the box and mail in the form to the address listed below. For other tax years complete the form below before you print, sign and mail in the form.
Option 1: Sign in to your eFile.com account, modify your Return and download/print the KS Form K-40 under My Account. Mark the check box "Amended Return" sign the form and mail it to one of the addresses listed below.
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 KS Form K-40 - Print, Mail the Form to KS Tax Department to:
Amendment Return:
Kansas Income Tax
915 SW Harrison St.
Topeka, KS 66699-1000
KS Tax Amendment Form K-40
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 KS Form K-40 by Tax Year below
Step 2: Sign, Mail Form K-40 to one of the addresses listed above
Check this box on the KS Tax Return Form K-40. This Form can be used to file a: Tax Return, Tax Amendment, Change of Address.

Kansas Amendment

Current tax year only: Prepare online on eFile.com until the October deadline. When done Print, Sign and Mail in - not eFile - Your Tax Amendment, Address Change etc.
Important:After the October deadline you can complete and sign tax forms online here on eFile, before you download, print and mail them to the state tax agency - Form K-40.
How to correct a rejected Tax Return
If your KS Tax Return was rejected by the KS Tax Agency - not eFile.com - instructions on how to correct a rejected Kansas Tax Return.
Check Your KS Tax Amendment Status
1. Call the Kansas Department of Taxation at (785) 368-8222
2. Contact the KS Dep. of Taxation
Kansas 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 Kansas 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 Kansas 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 Kansas Tax Income Taxes Deadlines
Kansas Income Tax Penalties
Find out how Kansas 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.

Will I get a bigger tax refund in 2024?

Many taxpayers can expect a bigger tax refund on their 2023 taxes. To help you keep up with soaring inflation, the IRS is making bigger changes than usual that could save you big money on your 2023 taxes, which is the tax return you'll file in 2024.

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 2023 to get a high-level understanding of your taxes.