Wisconsin Child Support Calculator & Guide (2025)
Overview of Wisconsin Child Support
Wisconsin uses the Percentage of Income Model under Wis. Stat. §49.0221 (DWD 40). The non-custodial parent pays a set percentage of their gross income based on the number of children. This makes Wisconsin's standard calculation relatively straightforward compared to Income Shares states.
However, Wisconsin also provides for shared placement adjustments, serial family obligations, and low-income adjustments that add nuance to the calculation.
How Child Support Is Calculated in Wisconsin
The Wisconsin child support formula works as follows:
- Determine gross income: The non-custodial parent's total income from all sources before deductions
- Adjust for serial family obligations: If the parent has children from other relationships, adjustments may reduce the income used for calculation
- Apply the percentage based on the number of children
- Apply shared placement adjustment if the parent has 25% or more overnight stays
- Consider low-income provisions for obligors with limited income
Wisconsin Child Support Percentages
| Number of Children | % of Gross Income | Example ($4,000/mo gross) |
|---|---|---|
| 1 child | 17% | $680 |
| 2 children | 25% | $1,000 |
| 3 children | 29% | $1,160 |
| 4 children | 31% | $1,240 |
| 5 children | 34% | $1,360 |
| 6+ children | 37% | $1,480 |
Key Factors in Wisconsin Calculations
Gross Income
Wisconsin uses gross income for the standard calculation. This includes all income from all sources before any deductions, including wages, salaries, commissions, bonuses, self-employment income, rental income, and investment income.
Shared Placement Adjustment
When the non-custodial parent has the child for 25% or more of overnight stays (at least 92 overnights per year), Wisconsin applies a shared placement adjustment. This calculation considers both parents' incomes and the proportion of time each parent has physical placement of the child.
Serial Family Obligations
If the paying parent has children from other relationships that they are legally obligated to support, the court may adjust the income used for the calculation. This is known as a serial family adjustment.
Minimum and Maximum Amounts
Minimum: Low-income obligors may qualify for reduced percentages under Wisconsin guidelines.
Maximum: Wisconsin does not have a statutory income cap. However, high-income payer provisions give the court discretion to adjust the amount when the parent's income is significantly above typical levels.
Modification and Enforcement
Modification
Wisconsin allows modification when:
- There has been a substantial change in circumstances
- A significant change in either parent's income occurs
- Placement arrangements change significantly
- The child's needs change
Enforcement
The Wisconsin Department of Children and Families - Bureau of Child Support enforces child support through:
- Income withholding from paychecks
- Tax refund interception
- Driver's license suspension
- Professional license suspension
- Credit bureau reporting
- Contempt of court proceedings
- Liens on property and financial accounts
Get your Wisconsin estimate: Use our free Wisconsin child support calculator to see what you might owe or receive under Wisconsin guidelines.
Frequently Asked Questions
How is child support calculated in Wisconsin?
Does Wisconsin have an income cap for child support?
Does Wisconsin consider both parents' income?
What is shared placement in Wisconsin?
Can Wisconsin child support be modified?
Legal Disclaimer
This article is for informational purposes only and does not constitute legal advice. Child support laws vary by state and are subject to change. For advice specific to your situation, please consult a qualified family law attorney in your jurisdiction.