Kansas Income Tax Calculator 2026

How the two Kansas brackets work

Kansas taxes the first $23,000 of taxable income at 5.2% and everything above at 5.58%; for married couples the break point is $46,000. Because the brackets are only 0.38 points apart, the effective rate for most middle-income households lands between 4% and 5% of wages.

Taxable income is federal AGI, adjusted on Schedule S, minus either the Kansas standard deduction ($3,605 single, $8,240 married, $6,180 head of household) or itemized deductions, minus exemptions of $9,160 per filer and $2,320 per dependent.

Worked example: family of four with $100,000 of wages

A married couple filing jointly with two children subtracts the $8,240 standard deduction, $18,320 of personal exemptions and $4,640 for the children, leaving $68,800 of taxable income.

The first $46,000 is taxed at 5.2% ($2,392) and the remaining $22,800 at 5.58% ($1,272), for total Kansas tax of $3,664 before credits, about 3.66% of gross income.

Kansas credits and special exemptions

Kansas offers several credits that our calculator does not apply automatically.

• Earned income tax credit: 17% of your federal EITC, partly refundable.
• Credit for child and dependent care expenses, for residents.
• Disabled veterans: an additional exemption for veterans receiving 100% disability compensation.
• Homestead refund (Form K-40H): up to $700 for full-year resident homeowners with 2025 household income of $43,389 or less who are over 55, blind or disabled, or have a dependent child under 18.
• Senior property tax refund (Form K-40PT): 75% of property taxes paid for homeowners 65 or older with household income of $25,380 or less (2025 figures). Form K-40SVR covers seniors and disabled veterans with higher incomes.

Retirement income, residency and filing

Social Security benefits included in federal AGI are subtracted on Schedule S, so Kansas does not tax them. Several pensions are also fully exempt: Kansas Public Employees Retirement System (KPERS) annuities, federal civil service and U.S. military retirement (including the Thrift Savings Plan), railroad retirement, and Kansas police, firefighter, teacher and highway patrol pensions. Private pensions, IRAs and 401(k) withdrawals remain taxable.

Part-year residents and nonresidents file Form K-40 with Part B of Schedule S, which taxes the share of income earned in Kansas. Active-duty military pay is taxable only by your state of legal residence, and the income of a non-military spouse living in Kansas only because of the service member’s orders is exempt.

The 2026 K-40 is due April 15, 2027. Kansas has no separate extension form: if you filed federal Form 4868, enclose a copy with your K-40 and the Kansas filing date is extended too. That is not an extension to pay, so send any estimated balance with Form K-40V by April 15.