Kansas income tax goes up to 5.58% at the top bracket. Calculate your combined federal + state effective tax rate for 2026. Formula shown, sources cited — no account required.
The state uses a graduated income tax structure with a top marginal rate of 5.58%. Lower-income earners benefit from lower bracket rates, while higher earners approach the top rate on income above certain thresholds. For the median earner at $75,514, the effective state rate typically falls below the top bracket, producing an annual state tax bill in the range of $2,800 to $3,500 depending on deductions and filing status. Federal taxes add graduated rates on top, pushing the combined effective rate for a middle-income household into the mid-to-high twenties. One ongoing area of note is the state sales tax environment — combined state and local sales tax rates can reach 8.69% on average, affecting the day-to-day cost of living for all residents. Social Security is excluded from state tax for lower- and moderate-income retirees, providing meaningful relief for older filers. The state has experimented with significant income tax changes in recent years, so staying current on law changes is worthwhile. Use the tax bracket calculator to see your exact marginal and effective state and federal rates based on your actual income.
Kansas Tax Brackets Explained (2026)
Kansas has a state income tax with a top marginal rate of 5.58%. On top of federal rates (10%–37%), residents can face a combined marginal rate exceeding 35% at higher income levels. However, your effective rate is always lower than the marginal rate because only income above each threshold is taxed at that bracket's rate.
The median household in Kansas earns $75,514/year. At that income (single filer), the federal effective rate is approximately 12–14%, bringing total income tax (federal + state) to roughly 15–18%.
How Marginal vs. Effective Rate Works
The marginal rate is the rate on your last dollar of income — it does not apply to all income. The effective rate is your total tax divided by total income. For example, someone earning $100,000 in Kansas has a 22% federal marginal rate but an effective federal rate of roughly 15%, because the first $44,725 (2024) is taxed at 10% and 12%, not 22%.