Wisconsin Child Support Calculator - Calculate WI Child Support Obligations
Free Wisconsin child support calculator. Calculate child support obligations based on Wisconsin state guidelines using the percentage of income model. Our calculator applies Wisconsin's statutory percentages and includes shared placement adjustments, health insurance, and childcare costs for accurate support calculations.
Last updated: October 17, 2025
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Enter the payer's total gross monthly income before deductions
Percentage of time child(ren) spend with payer (25%+ triggers shared placement adjustment)
Cost of health insurance for child(ren)
Work-related childcare expenses
Monthly Child Support
$1,850
per month
Based on Wisconsin child support guidelines using the percentage of income model for 1 child. With gross monthly income of $5,000, the base support rate is 17%, resulting in a base obligation of $850. Additional expenses for health insurance and childcare are added to determine the total monthly support.
Legal Disclaimer: This calculator provides estimates based on Wisconsin child support guidelines. Actual court orders may vary based on additional factors, deviations from guidelines, and judicial discretion. Consult a Wisconsin family law attorney for official calculations and legal advice.
Wisconsin Child Support Guidelines & Calculation
Support percentages by child count
1 child: 17%
2 children: 25%
3 children: 29%
4 children: 31%
5+ children: 34%
Applied to payer's gross monthly income
25% threshold
92+ Days = Credit Applied
Credit increases from 25% to 50% placement
Add-on expenses
Health Insurance + Childcare
Variable costs added to base obligation
Quick Example Calculation
For 1 child with gross monthly income of $5,000, 20% placement, $1,000 expenses:
Base Support (17%)
$850
Additional Expenses
$1,000
Total Monthly
$1,850
How Wisconsin Child Support Calculator Works
Our Wisconsin child support calculator applies the state's percentage of income model as outlined in Wisconsin Statutes Section 767.511. The calculation uses the payer's gross monthly income and applies the appropriate percentage based on the number of children. Shared placement adjustments are applied when the payer has 25% or more placement time, and additional expenses for health insurance and childcare are included.
Wisconsin Child Support Formula
Step 1: Base Support = Gross Income × PercentageStep 2: Apply Shared Placement Credit (if 25%+)Step 3: Add Health Insurance CostsStep 4: Add Childcare CostsStep 5: Total Support = Base - Credit + ExpensesThe percentage varies based on number of children (17% for 1 child, 25% for 2 children, 29% for 3 children, 31% for 4 children, and 34% for 5 or more children). Shared placement credit reduces the obligation proportionally for placement time between 25% and 50%.
Wisconsin Child Support Laws & Guidelines
Wisconsin follows a percentage of income model for child support, which is simpler than the income shares model used by many other states. The payer pays a fixed percentage of their gross income based on the number of children. Wisconsin also has specific provisions for shared placement situations that provide credits to account for the time children spend with each parent.
- Percentage based on number of children receiving support
- Calculated from payer's gross monthly income
- Shared placement credit for 25% or more placement time
- Health insurance premiums for children are added
- Work-related childcare costs are added
- Support continues until age 18 or high school graduation (up to age 19)
Sources & References
- Wisconsin Statutes Section 767.511 - Determination of child supportOfficial Wisconsin child support guidelines and percentages
- Wisconsin Department of Children and Families - Bureau of Child SupportState agency responsible for child support administration
- State Bar of Wisconsin - Family Law Section ResourcesProfessional resources for Wisconsin family law practitioners
Need child support calculations for other states? Check out our Pennsylvania child support calculator and Nevada child support calculator.
Get Custom Legal Calculator for Your FirmWisconsin Child Support Calculator Examples
Input Values:
- Gross Monthly Income: $6,000
- Number of Children: 2
- Placement Time: 30% (110 days)
- Health Insurance: $250/month
- Childcare: $1,000/month
Calculation Steps:
- Apply 25% rate for 2 children
- Base support: $6,000 × 0.25 = $1,500
- Apply shared placement credit (30%)
- Add health insurance: $250
- Add childcare: $1,000
Result: Reduced from base due to shared placement credit
Shared placement credit reduces support obligation while variable expenses are added.
Primary Placement Example
Income: $5,000 | 1 child | 15% placement
Full 17% obligation (no shared placement credit)
Equal Placement Example
Income: $7,000 | 3 children | 50% placement
29% base with 50% placement credit applied
Frequently Asked Questions
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