Wisconsin Child Support Calculator
Estimate monthly child support under Wisconsin's official guideline model. Updated for 2026.
Last reviewed July 2026 · Free · Nothing you enter is stored
Percentage of Income state
Before taxes. Include wages, self-employment, bonuses.
Every-other-weekend ≈ 80. Equal custody ≈ 182.
$0
estimated monthly child support ·
Guideline estimate, not a court order or legal advice. Courts may deviate based on your circumstances.
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How Wisconsin calculates child support
Wisconsin uses the percentage of income model: child support is calculated as a set percentage of the paying parent's income, with the percentage increasing with the number of children.
Governing law: Wis. Admin. Code DCF 150; Wis. Stat. § 767.511 — Flat percentages of payer gross income with special schedules for low income (75-150% FPL), high income (reduced marginal rates above $7,000/mo), serial payers, and shared placement at 25%+ overnights.
Wisconsin's guideline percentages of the paying parent's gross income:
| Children | Percentage of income |
|---|---|
| 1 | 17% |
| 2 | 25% |
| 3 | 29% |
| 4 | 31% |
| 5 | 34% |
Frequently asked questions
How is child support calculated in Wisconsin?
Wisconsin uses the percentage of income model: child support is calculated as a set percentage of the paying parent's income, with the percentage increasing with the number of children. The guideline is set by Wis. Admin. Code DCF 150; Wis. Stat. § 767.511.
Is this the exact amount a Wisconsin court will order?
No — this is a guideline estimate. Courts start from the guideline amount but can deviate for factors like extraordinary medical costs, special needs, other support obligations, or agreements between parents. For an official figure, consult your court’s self-help center or a family law attorney.
Does parenting time affect child support in Wisconsin?
In most states, including under most guideline models, substantial parenting time (often above roughly 20–30% of overnights) reduces the paying parent's obligation. Our calculator applies a simplified parenting-time adjustment; Wisconsin's courts apply their own specific rules, so treat shared-custody results as rough estimates.
What income counts for child support in Wisconsin?
Generally all income: wages, self-employment, bonuses, commissions, and often investment income. Wisconsin's guideline uses gross (pre-tax) income figures. Courts may also impute income to a parent who is voluntarily unemployed or underemployed.
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