Kansas uses an income shares model per K.S.A. 23-3222 and Admin Order 2025-RL-037 (eff. July 1, 2025). UNIQUE feature: the schedule is age-dependent with 3 brackets (0-5, 6-11, 12-18). Uses "domestic gross income" (taxes built into schedule). Each parent pays proportional share based on income ratio.
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Kansas calculates child support using the Income shares with age-dependent schedule established under K.S.A. 23-3222; Admin Order 2025-RL-037. This is a statutory formula that leaves limited room for judicial discretion on the base calculation amount, ensuring consistency and predictability for families across the state.
Total obligation from schedule (based on combined gross + number of children + age bracket) x obligor income share percentage.
The calculation begins with determining each parent's net disposable income, which includes virtually all sources of income minus taxes, mandatory payroll deductions, and certain hardship deductions. The court then applies the statutory formula using the time each parent has primary physical responsibility for the children and the applicable income allocation brackets.
Beyond the base formula amount, Kansasrequires additional contributions for mandatory add-on expenses. These typically include childcare costs necessary for the custodial parent's employment or education, uninsured healthcare expenses for the children, and in some cases, educational and travel costs. These add-ons are split between parents in proportion to their respective incomes.
Primary statute: K.S.A. 23-3222; Admin Order 2025-RL-037
Income shares model using domestic gross income (taxes built into schedule).
UNIQUE: age-dependent schedule with 3 brackets: ages 0-5, 6-11, 12-18.
At $5,000 combined, 1 child: 0-5 = $706/mo, 6-11 = $811/mo, 12-18 = $882/mo.
Each parent pays proportional share based on percentage of combined income.
Schedule values are approximations of the published Kansas Supreme Court schedule.
Age-dependent schedule is unique to Kansas among US states.
Incompatibility (no-fault) requires only ONE spouse.
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Residency Requirement
60-day residency before filing (K.S.A. §23-2703)
Mandatory Waiting Period
60-day waiting period after filing before decree can be entered
No-Fault Ground
Incompatibility (K.S.A. §23-2701) — only ONE spouse needs to claim it
State Income Tax
3.10% up to $30,000 / 5.70% above (2026). Social Security fully exempt.
Kansas uses the Income shares with age-dependent schedule under K.S.A. 23-3222; Admin Order 2025-RL-037. Kansas uses an income shares model per K.S.A. 23-3222 and Admin Order 2025-RL-037 (eff. July 1, 2025). UNIQUE feature: the schedule is age-dependent with 3 brackets (0-5, 6-11, 12-18). Uses "domestic gross income" (taxes built into schedule). Each parent pays proportional share based on income ratio.
Key factors include both parents' income, the number of children, custodial time share, mandatory add-on expenses (childcare, health insurance), and any applicable deductions. Income shares model using domestic gross income (taxes built into schedule).
Yes. Either parent can request a modification if there has been a material change in circumstances, such as a significant change in income, custody arrangements, or the needs of the child. The court will recalculate support using the same statutory formula.
Total obligation from schedule (based on combined gross + number of children + age bracket) x obligor income share percentage.
Get a personalized child support calculation based on Kansas's actual statutory formula.
Start My Free KansasEstimate →This tool provides educational estimates based on Kansas family law and does not constitute legal advice. Child support calculations are approximations of the statutory formula and may differ from court-ordered amounts. Consult a licensed Kansas family law attorney before making decisions. Primary statute: K.S.A. 23-3222; Admin Order 2025-RL-037.