Wisconsin · Checked October 23, 2026
Wisconsin child support calculator
Wisconsin uses a percentage of the paying parent's gross income: 17% for one child, 25% for two, 29% for three, 31% for four and 34% for five or more, at incomes up to $84,000 a year.
Base-rate child support
$0
How Wisconsin child support is calculated
The base rates below apply to gross income up to $84,000 a year. Higher incomes, lower incomes, shared placement (each parent has at least 25% of overnights), split placement and parents supporting children in more than one family all use special rules.
| Children | Base rate |
|---|---|
| 1 | 17% |
| 2 | 25% |
| 3 | 29% |
| 4 | 31% |
| 5 or more | 34% |
Source: Wisconsin DCF, percentage of income standard. For anything beyond the base rate, use the state's own tools or ask the county child support agency.
Frequently asked questions
What percentage is child support in Wisconsin?
The base rate is 17% of gross income for one child, 25% for two, 29% for three, 31% for four and 34% for five or more, for incomes up to $84,000 a year.
Other states: child support calculator by state · Guides: child custody · divorce
Free · No obligation
Get a free case review
Tell us a little about your situation and we’ll try to connect you with a participating lawyer in your area who handles it.
General information from Wisconsin's guidelines and official sources, checked October 23, 2026. A judge can order a different amount; this is not legal advice. AmericanAttorneys.net is not a law firm.