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3 Examples of How Child Support May Be Calculated in Wisconsin
Issues related to child support are very often an important part of divorce and child custody cases. The costs of raising children in 2026 are high and rising. These costs should be shared by both parents. Unfortunately, making sure both parents are contributing fairly to a child’s needs sometimes takes some work.
If you are going through a divorce or working through child custody issues and child support is a part of your case, a good first step is understanding the how and why behind child support calculations in Wisconsin. An experienced Milwaukee child support lawyer with Gimbel, Reilly, Guerin & Brown, LLP can work with your family to make sure you understand the law and get what you need.
Child Support and Gross Income in Wisconsin
Wisconsin's approach to child support is designed to ensure that each parent puts an appropriate share of their income towards meeting a child’s financial needs. The state uses a "percentage of income standard," which bases payments on the paying parent's gross income and the number of children being supported. Payments also depend on how much time the child spends with each parent. We’ll go into more detail about this below.
There are many different types of income the Wisconsin Department of Child and Families considers gross income, including salary and wages, Social Security, unemployment compensation, and veteran's disability benefits. Understanding every possible source of money that the court will consider income is especially important if you or your spouse works a non-traditional job. Getting the calculation right from the beginning is one of the most important things you can do for your child's financial security.
What Percentages Are Used to Calculate Child Support in Wisconsin?
Under the percentage of income standard, the following percentages of a parent's gross income are allocated for child support:
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17 percent for one child
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25 percent for two children
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29 percent for three children
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31 percent for four children
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34 percent for five or more children
These percentages serve as the baseline for most Wisconsin child support cases. However, the final amount can look quite different depending on the specific circumstances of your family.
What Situations Can Change How Child Support Is Calculated?
While the percentages above apply in straightforward cases, actual child support amounts can vary considerably. Here are three of the most common situations that affect the calculation:
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Shared placement: Shared placement applies when a child stays overnight with each parent at least 92 days per year. When both parents provide care for a child for a substantial amount of time, additional calculations are made to ensure child support is allocated correctly. Even if a child will not be staying with one parent for 92 overnights each year, substantial time spent caring for the child during the day may still be considered. If that time is equivalent to overnight stays, a parent may receive credit for it, and child support may be calculated on a shared placement basis.
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High-income parents: For parents earning at least $7,000 per month, different percentages may be used to calculate an appropriate support amount. Courts have more flexibility in these cases to ensure the outcome is fair rather than simply applying a fixed percentage to a very high income.
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Additional expenses: Costs such as health insurance premiums, unreimbursed medical expenses, educational costs, and expenses related to a child's special needs can all influence the final support amount. Parents are generally required to divide these costs in proportion to their incomes.
Although there are worksheets, percentages, and standard formulas for setting child support payments, your attorney can advocate for different amounts. If you are asking for payments above or below the standard amount, be prepared with evidence showing supporting your request.
Less Common Scenarios that Can Affect Child Support Calculations in Wisconsin
Some situations fall outside the typical formula and require closer attention.
Self-Employment
If a parent is self-employed, calculating gross income can be more complex. Courts look beyond what a parent reports on tax returns and may examine business records, profit and loss statements, and personal expenses paid through a business to get an accurate picture of actual income.
Voluntary Under- or Unemployment
If a parent is voluntarily unemployed or underemployed — meaning they are purposefully working less or earning less than they could — a court may impute income. This means the court assigns an income amount based on what that parent is capable of earning, rather than what they are currently making. Wisconsin courts do this to prevent a parent from reducing their support obligation by choosing not to work or by taking a lower-paying job.
Parent Supporting Multiple Families
If a parent has children from multiple relationships, the court may also consider those existing support obligations when calculating a new order. Wisconsin allows for a multi-family adjustment to avoid creating an impossible financial burden on the paying parent.
Frequently Asked Questions About Wisconsin Child Support
Can child support be modified after it is set?
Parents can ask Wisconsin courts to review support orders about every three years, but modifications can also be requested outside of that schedule if there has been a substantial change in either parent’s circumstances. The most common changes include a large change in income, a change in the child's needs, or a change in the custody arrangements.
Does child support cover college expenses?
A parent’s legal obligation to pay child support almost always ends when a child turns 18 or graduates from high school, whichever comes later. College expenses are not automatically covered by a standard child support order, though parents can agree to contribute to college costs as part of a broader settlement. Some states can require parents to pay a child’s college expenses. Wisconsin is not one of them.
What happens if a parent does not pay child support?
According to the U.S. Census Bureau, only about half of custodial parents receive the full child support they are owed. Wisconsin has several enforcement tools you can use to pursue child support payments if your child’s other parent won’t pay. The state could garnish the paying parent’s wages or intercept their tax refund. In serious cases of unpaid child support, the state can suspend professional or driver’s licenses and even hold the parent in contempt of court. Wisconsin takes unpaid child support seriously. If your child’s other parent stops paying, talk to a lawyer right away.
Contact a Milwaukee Family Law Attorney Today
Child support calculations in Wisconsin are designed to be fair, but it’s still always a good idea to have an attorney on your side, advocating for your interests. Every family’s situation is unique, and every child deserves to have his or her needs met.
Our Milwaukee, WI child support lawyers at Gimbel, Reilly, Guerin & Brown, LLP can help you understand how the state's guidelines apply in your situation and what your options are if you want to ask for exceptions. Contact us today at 414-271-1440 for a complimentary consultation.
