Wisconsin family law calculators (2026)

Guideline estimates for Wisconsin, each built from the statute and shown step by step. Pick a calculator to start, or scan the key numbers below.

Child Support Calculator

Wisconsin Child Support Calculator

Wisconsin applies a fixed percentage of the paying parent's gross income, from 17% for one child to 34% for five or more, with lower percentages on high incomes and a separate offset formula when both parents have at least 25% of overnights. Enter the incomes and placement to see the guideline amount.

One child: 17%
High-income tiers: $7,000 and $12,500

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Key 2026 figures in Wisconsin

One child (Child support)

Of the payer's gross income; two children 25%, three 29%, four 31%, five or more 34%.

17%

High-income tiers (Child support)

Reduced percentages apply to monthly income above each threshold.

$7,000 and $12,500

Shared placement (Child support)

25% of the year for each parent triggers the 1.5 multiplier and offset.

92 overnights

Income basis (Child support)

Wisconsin does not deduct taxes before applying the percentage.

Gross