Missouri vs Kansas Taxes
Compare the total tax burden between Missouri (2% – 4.8%) and Kansas (3.1% – 5.7%). Enter your income to see which state saves you more.
Kansas vs Missouri: The Kansas City metro where your side of State Line Road determines your tax bill
Kansas and Missouri share one of America's most unusual tax boundaries: the Kansas City metropolitan area, where 2.5 million people live in a single metro split almost evenly across two states. State Line Road literally separates neighborhoods with different tax regimes. This has created decades of cross-border competition, with both states offering incentive packages to lure businesses a few miles across the line—a practice so wasteful that the two states signed a formal "border war" truce in 2019.
Missouri's top income tax rate has been declining, reaching 4.7% in 2025 as part of a phased reduction plan. Kansas has a graduated system topping out at 5.58%. But the comparison is more complex than the top rates suggest. Missouri allows a federal income tax deduction (up to $5,000 for single filers, $10,000 for joint), which effectively lowers the rate for higher earners. Kansas has no such deduction. Kansas City, Missouri also levies a 1% earnings tax on anyone working within city limits, regardless of where they live.
Property taxes create another significant gap: Kansas averages 1.33% effective rate versus Missouri's 0.88%. For a $350,000 home in the KC metro, that's a difference of roughly $1,575 per year. Johnson County, Kansas (Overland Park, Olathe, Lenexa) has excellent schools and amenities but pays for them through higher property taxes. Jackson County, Missouri (Kansas City proper, Lee's Summit) offers lower taxes but more variable public services. The choice often comes down to school quality versus tax savings.
Key Differences Beyond Income Tax
| Category | Missouri | Kansas |
|---|---|---|
| Property Tax | Effective rate ~1.33%; Johnson County among the highest in the state at ~1.4% | Effective rate ~0.88%; Jackson County lower but with frequent reassessment disputes |
| Sales Tax | Base rate 6.5%, combined up to 11.5% in parts of Wyandotte County; groceries taxed (rate being phased down) | Base rate 4.225%, combined up to 10.85% in some Kansas City areas; groceries taxed at reduced rate |
| City Earnings Tax | No city income or earnings tax in Kansas communities | Kansas City, MO levies a 1% earnings tax on everyone who works in the city—including commuters from Kansas |
| Retirement Income | Social Security exempt; public pensions (state/local/federal) fully exempt; private retirement income taxed at regular rates | Social Security exempt (with AGI limits); public pensions partially exempt; private retirement income eligible for partial deduction |
| Cost of Living | Johnson County upscale and pricier; Wyandotte County very affordable; overall moderate | Kansas City proper affordable; Lee's Summit mid-range; overall 5-10% below national average |
Who Benefits from Moving?
KC metro families comparing Johnson County (KS) vs Lee's Summit (MO)
A dual-income household earning $180,000 pays about $8,700 in Kansas income tax versus roughly $7,200 in Missouri (after the federal tax deduction). But a $400,000 home in Johnson County costs about $5,600 in property tax versus $3,520 in Lee's Summit. Total: KS costs about $3,580 more—but Johnson County schools consistently rank among the state's best.
Workers employed in Kansas City, MO
If you work in KCMO, you owe the 1% earnings tax regardless of where you live. A $100,000 earner pays $1,000 in KC earnings tax either way. Living in Missouri avoids the higher Kansas income tax rate and property taxes. Living in Kansas gets better schools but costs more overall.
Retirees with government pensions
Kansas fully exempts state, local, and federal government pensions from income tax. Missouri offers partial exemptions. A retired federal employee with a $60,000 pension pays $0 state income tax in Kansas versus roughly $1,800 in Missouri. For government retirees, Kansas is the clear winner.
Bottom line: At $150,000 income, Kansas's income tax runs about $7,500 versus Missouri's roughly $5,800 (after the federal deduction)—but property taxes on a $350,000 home add another $1,575 to the Kansas side, making Missouri about $3,275 cheaper overall for the typical KC metro household.
Tax at Different Income Levels
| Income | Missouri Total Tax | Kansas Total Tax | Annual Savings |
|---|---|---|---|
| $75,000 | $16,418 | $16,606 | +$188 |
| $100,000 | $25,031 | $25,444 | +$413 |
| $150,000 | $42,874 | $43,737 | +$863 |
| $200,000 | $59,617 | $60,930 | +$1,313 |
Based on single filer, standard deduction, 2025 tax year. Includes federal income tax, state income tax, and FICA.
Why the difference
You'd pay $413/year ($34/month) more in Kansas vs Missouri.
Tax structure
Missouri uses progressive brackets up to 4.8%, while Kansas uses progressive brackets up to 5.7%.
Effective rate at your income
At $100,000, Missouri's effective state rate is 3.9% vs 4.3% in Kansas — a 0.4 percentage point gap.
Tip: In a progressive-bracket state, pre-tax 401(k) and HSA contributions reduce your state tax bill along with federal tax. If you are near a bracket boundary, an additional contribution can drop you into a lower state bracket.
Tip: In a progressive-bracket state, pre-tax 401(k) and HSA contributions reduce your state tax bill along with federal tax. If you are near a bracket boundary, an additional contribution can drop you into a lower state bracket.
Understanding Each State
Missouri
This state uses a progressive income tax system with multiple brackets, similar to the federal system. Only the income within each bracket is taxed at that rate, so your effective state rate is lower than the top bracket. Tax planning strategies include maximizing pre-tax retirement contributions to reduce state-taxable income.
Tip: In a progressive-bracket state, pre-tax 401(k) and HSA contributions reduce your state tax bill along with federal tax. If you are near a bracket boundary, an additional contribution can drop you into a lower state bracket.
Kansas
This state uses a progressive income tax system with multiple brackets, similar to the federal system. Only the income within each bracket is taxed at that rate, so your effective state rate is lower than the top bracket. Tax planning strategies include maximizing pre-tax retirement contributions to reduce state-taxable income.
Tip: In a progressive-bracket state, pre-tax 401(k) and HSA contributions reduce your state tax bill along with federal tax. If you are near a bracket boundary, an additional contribution can drop you into a lower state bracket.
Key Comparison Points
Income tax structure: Missouri has a progressive income tax (2% – 4.8%), while Kansas has a progressive income tax (3.1% – 5.7%).
Beyond income tax: State tax comparisons should also consider property tax rates, sales tax, and cost of living. A state with no income tax may have higher property or sales taxes that offset the savings.
SALT deduction cap: Under OBBBA (2025+), the federal SALT cap is $40,000, phasing out above $500,000 MAGI toward a $10,000 floor. This limits the federal tax benefit of living in a high-tax state, so the gross state tax difference remains close to the net difference for most earners — especially high earners inside the phaseout.
Frequently asked questions
Is it cheaper to live in Missouri or Kansas?
Based on income tax alone, Missouri has a lower tax burden. At $100K income, you'd save $413 annually in Missouri compared to Kansas. However, total cost of living also depends on property taxes, sales taxes, and housing costs.
How much would I save moving from Kansas to Missouri?
A single filer earning $100,000 would save approximately $413 per year in total taxes by living in Missouri instead of Kansas. At $150,000 income, the savings change to $863 per year.
What is the income tax rate in Missouri?
Missouri has a progressive income tax with rates of 2% – 4.8%.
What is the income tax rate in Kansas?
Kansas has a progressive income tax with rates of 3.1% – 5.7%.