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Kansas Income Tax Forms

Kansas Income Tax Forms

Individual Income Tax

Form K-40 Kansas Individual Income Tax 

Kansas Income Tax Forms: Understanding the Complexities of State Taxation

As citizens of the United States, we are all required to pay taxes to the federal government. But did you know that each state also imposes its own income taxes? Kansas is no exception. The state of Kansas requires its residents to file state income tax returns each year. In this article, we will delve into the complexities of Kansas income tax forms, including who is required to file, how to file, and important information updates for 2021.

Who Needs to File a Kansas Income Tax Return?

If you are a resident of Kansas and met the following criteria during the tax year, you are required to file a state income tax return:

1. You were single and your gross income was at least $5,500.

2. You were married filing jointly and your combined gross income was at least $5,500.

3. You were married filing separately and your gross income was at least $5,500.

4. You were head of household and your gross income was at least $7,500.

If you did not meet the above criteria, but had any Kansas income tax withheld from your paycheck, you may still need to file a state tax return in order to receive a refund.

Kansas also requires nonresidents who earned income within the state to file a tax return. If you worked in Kansas but are not a resident of the state, you must file a nonresident tax return.

What Do I Need to File a Kansas Income Tax Return?

To file a Kansas income tax return, you will need to gather the following information:

1. Your social security number.

2. Income statements, including W-2s, 1099s, and any other documentation of income earned during the tax year.

3. Any applicable deductions, such as student loan interest paid or charitable contributions made.

4. Your federal income tax return, as some information from your federal return may be needed for your state return.

5. Any proof of Kansas income tax withheld from your paycheck.

It is important to note that if you are filing for a tax year other than the current year, you will need to use the appropriate tax form for that year. This information is available on the Kansas Department of Revenue’s website.

How Do I File a Kansas Income Tax Return?

There are several ways to file a Kansas income tax return:

1. Online – Use the Kansas Department of Revenue’s online tax portal (www.kswebfile.org). This is the quickest and easiest way to file your return, and you can also track the status of your refund through the portal.

2. Mail – Print out the appropriate tax form from the Kansas Department of Revenue’s website and mail it to the address listed on the form. Be sure to include any required payment.

3. In-Person – Visit a Kansas Department of Revenue office and file your return in-person. This is not available in all areas of the state, so check the Kansas Department of Revenue’s website for office locations.

It is important to note that if you owe taxes, payment must be included with your tax return. Failure to pay your taxes may result in penalties and interest charges, in addition to legal action by the state of Kansas.

Important Updates for Kansas Income Tax Forms in 2021

There are several updates to Kansas income tax forms for the 2021 tax year. Here are some of the most important changes:

1. Standard Deductions – The standard deduction for single filers has increased from $3,000 to $3,500, and for married couples filing jointly, the standard deduction has increased from $7,500 to $9,000.

2. Retirement Benefits – You may be eligible for a retirement benefits deduction if you are over the age of 65 and receiving retirement benefits.

3. COVID-19 Updates – Kansas has extended the deadline for tax payments to May 17, 2021, to align with the federal deadline extension. Additionally, the state has waived penalties for individuals who were unable to pay their taxes on time due to COVID-19 related issues.

4. Federal Conformity – Beginning with the 2021 tax year, Kansas is fully conforming to the federal tax code. This means that changes made to federal tax laws will now be automatically adopted by Kansas.


Kansas income tax forms can be complex and overwhelming, but it is important to file a return each year to avoid penalties and legal action. As a resident of Kansas, it is your responsibility to understand the requirements and properly file your taxes. By following the guidelines provided by the Kansas Department of Revenue and staying updated on any changes to tax laws, you can ensure that you are meeting your tax obligations and avoiding any unnecessary financial consequences.