Child Support in Kansas

Free calculator, modification rules, arrears interest, and 50/50 custody guide for Kansas — 2026.

Child Support Calculator

Estimate payments using Kansas's Income Shares

Modification Checker

Does your income change qualify?

Arrears Calculator

Past-due support with 10% interest

50/50 Custody Guide

Does equal custody eliminate support?

Kansas Child Support Facts — 2026

Formula modelIncome Shares

Income basisBoth parents' income

Support ends at age18

Modification threshold10% income change

Arrears interest rate10% per year

Official agencyKansas Child Support Agency ↗

Kansas uses Income Shares based on combined gross income.

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