AMENDED RETURNS MUST BE PRINTED AND MAILED (FEDERAL AND/OR STATE)
You must file an amended Kansas return when:
1) an error was made on your Kansas return,
2) there is a change (error or adjustment) on another state’s return, or
3) there is a change (error or adjustment) on your federal return.
In the Amended Return section of Form K-40, mark the box that explains the reason for amending your 2019 Kansas return.
Pay the full amount of tax and interest due on an amended return and no late pay penalty will be assessed. Refer to the Kansas Department of Revenue’s website for annual interest rates.
AMENDED FEDERAL RETURN (1040X): If you are filing a 1040X for the same taxable year as this amended return, you must enclose a complete copy of the 1040X and a full explanation of all changes made on your Kansas return. If your 1040X is adjusted or disallowed, then provide the Kansas Department of Revenue with a copy of the adjustment or denial letter.
If you did not file a Kansas return when you filed your original federal return, and the federal return has since been amended or adjusted, use the information on the amended or adjusted federal return to complete your original Kansas return. A copy of both the original and amended federal returns should be enclosed with the Kansas return along with an explanation of the changes.
FEDERAL AUDIT: If a previously filed federal return was not correct, or if your original return was adjusted by the IRS, amended returns or copies of the Revenue Agent’s Reports must be submitted within 180 days of the date the federal adjustments are paid, agreed to, or become final, whichever is earlier. Failure to properly notify the Director of Taxation within the 180 day period will cause the statute of limitations to remain open (the Kansas Department of Revenue could make assessments for as many years back as necessary).