The primary Kansas state income tax return for individuals is Form K-40. This form is used by full-year residents, part-year residents, and non-residents to file their annual Kansas income tax return.
It is also used to claim a Kansas food sales tax refund, if eligible. All Kansas individual income tax forms are administered by the Kansas Department of Revenue (KDOR) and are updated annually.
Key Kansas Individual Income Tax Forms
Most individual taxpayers will use one or more of the following forms when preparing their Kansas return:
- Form K-40 – Kansas Individual Income Tax Return
The main form used to report income, calculate tax liability, claim credits, and request refunds, including the food sales tax refund. - Schedule S – Supplemental Schedule
Used to report additions and subtractions (modifications) to your federal Adjusted Gross Income (AGI), such as retirement income exclusions or other Kansas-specific adjustments. - Schedule A – Kansas Itemized Deductions
Required if you itemize deductions on your Kansas return rather than taking the standard deduction. - Form K-40V – Payment Voucher
Used when submitting a paper check or money order for taxes owed with a mailed return. - Form K-40ES – Estimated Tax Vouchers
Includes vouchers and instructions for individuals who must make quarterly estimated income tax payments. - Form K-210 – Underpayment of Estimated Tax
Used to calculate penalties if you did not pay enough estimated tax throughout the year. - Form K-4 – Kansas Employee’s Withholding Allowance Certificate
Completed by employees and given to employers to determine the correct amount of Kansas income tax withholding from wages.
Other Notable Kansas Tax Forms
KDOR also provides specialized forms for taxpayers with unique circumstances:
Property Tax Relief (Homestead Claims)
- Form K-40H – Homestead Refund Claim
- Form K-40PT – Property Tax Relief Claim
- Form K-40SVR – Property Tax Relief for Seniors and Disabled Veterans
These programs are designed to provide property tax relief for qualifying low-income seniors, disabled individuals, and disabled veterans.
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Business and Withholding Taxes
- CR-16 – Business Tax Application
- KW-3 – Annual Withholding Tax Return. Used by businesses for sales tax, employer withholding, and corporate tax obligations.
Miscellaneous Forms
- DO-10 – Power of Attorney
- DO-41 – Request for Copy of Kansas Tax Records
These forms allow taxpayers to authorize representatives or obtain copies of prior tax filings.
Where to Get Kansas Tax Forms
- Online Download: All current and prior-year Kansas tax forms are available through the Kansas Department of Revenue online forms library.
- Electronic Filing: Kansas encourages taxpayers to file electronically using:
- Kansas WebFile – A free, state-provided e-filing system for eligible simple returns
- Approved commercial tax software – Ideal for more complex returns
Why Electronic Filing Is Recommended
Filing your Kansas return electronically offers several advantages:
- Faster processing and refunds
- Fewer errors through built-in calculations and checks
- Immediate confirmation that your return was received
- Secure submission without mailing delays
For most taxpayers, e-filing is the safest, fastest, and most accurate way to file a Kansas income tax return.
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