Living in Kansas, Working in Missouri (or the Reverse): State Tax Basics

Kansas and Missouri state income tax for commuters explained by Robert Allen Bautista, Kansas City tax preparer

In the Kansas City metro, thousands of people sleep in one state and work in the other. That usually means filing two state returns. The good news: the system is designed so you are not taxed twice on the same income. Here is how it works.

The core rule

  • Your home state taxes all of your income, wherever you earn it.
  • The state where you work taxes the income earned there, as a nonresident.
  • Your home state gives you a credit for the tax you paid to the work state, so the same dollars are not fully taxed twice.

Kansas and Missouri do not have a reciprocity agreement, so you generally cannot just file in your home state and skip the other one.

Live in Kansas, work in Missouri

  1. Missouri nonresident return (Form MO-1040 with the nonresident section) reporting the wages earned in Missouri. Your employer will usually withhold Missouri tax.
  2. Kansas resident return (Form K-40) reporting all of your income, then claiming the credit for taxes paid to other states for the Missouri tax.
  3. Kansas City, Missouri earnings tax: if you work inside KCMO city limits, you generally owe the 1% city earnings tax even as a nonresident. Many employers withhold it; if you are self-employed, you handle it yourself. Remote days worked from your Kansas home are generally not KCMO earnings, so keep track.

Live in Missouri, work in Kansas

  1. Kansas nonresident return (Form K-40 with Schedule S, Part B) reporting the Kansas-source income.
  2. Missouri resident return reporting all income, with the Missouri credit for income tax paid to another state (Form MO-CR).
  3. If you live in KCMO, the 1% earnings tax applies to residents on their earnings, even if you work in Kansas.

Self-employed across State Line Road

Freelancers and gig workers who do work in both states may need to allocate business income between them. Keep notes on where you actually performed the work, client locations, and mileage logs. That record is what supports the split. My gig driver guide and self-employment tax guide cover the federal side.

Common mistakes

  • Filing only in the home state and getting a bill from the work state later
  • Forgetting the credit for taxes paid to the other state, and overpaying
  • Not checking that the W-2 splits state wages correctly between Kansas and Missouri
  • Missing the KCMO earnings tax on remote vs. in-office days
  • Moving across the line mid-year and not filing part-year resident returns in both states

Official sources

This article is general information, not tax advice for your specific situation. Forms and rules change; confirm with each state's department of revenue.

Related guides

About the author

Robert Allen Bautista is a tax preparer and accountant in Kansas City. He spent four years at PwC in IT audit and tax, served as Chief Accountant at a CPA firm, holds an M.S. in Accounting, and is a CPA candidate. He has worked with 350-plus individual and small business clients and writes plain-English tax guides in English and Spanish. More about Robert · Website · LinkedIn 

Comments

Post a Comment

Popular posts from this blog

How Self-Employment Tax Works, Step by Step (2026)

Image
If you freelance, drive for an app, or run a one-person business, the tax that surprises people most is not income tax. It is self-employment tax , the Social Security and Medicare tax that an employer would normally split with you. When you work for yourself, you pay both halves. Here is exactly how it is calculated, step by step. Step 1: Figure your net profit Self-employment tax is based on net earnings, not gross revenue. Start with what you were paid, then subtract ordinary and necessary business expenses on Schedule C (or your share of partnership income on Schedule K-1). Every legitimate expense you record lowers both income tax and self-employment tax. Step 2: Multiply by 92.35% You do not pay the tax on 100% of profit. The IRS lets you multiply net profit by 92.35% first. This mirrors the fact that employees do not pay Social Security and Medicare on the employer's share. If net earnings after this step are under $400, you generally owe no self-employment tax. Step ...
Read more

How Long to Keep Tax Records (and Exactly What to Keep)

Image
"How long do I have to keep this?" is one of the most common questions I get, usually from someone holding a shoebox of receipts. The answer depends on how long the IRS has to question a return. Here is the practical version. The time limits 3 years from the date you filed (or the due date, if later): the general rule for most returns. 6 years if you left out more than 25% of the gross income you should have reported. 7 years if you claim a loss from worthless securities or a bad debt deduction. Indefinitely if you never filed a return or filed a fraudulent one. 4 years for employment tax records if you have employees, from the date the tax was due or paid, whichever is later. Records that follow the asset, not the year Keep records for property (your home, rental property, equipment, investments) until the time limit expires for the year you sell or dispose of it. That means purchase documents, improvements and depreciation records can need to be kept for many years. H...
Read more