Wisconsin doesn't have an official online calculator for child support. However, the state's Department of Children and Families (DCF) does provide tools to estimate child support in different physical placement (custody) arrangements, including when:
Before you use these tools, you'll need to have some basic information on hand, including:
If you don't believe that the amount of child support calculated under Wisconsin's guidelines would be appropriate in your case, you may ask the judge to order a different amount. Whether you and your co-parent have agreed on a different amount or a judge decides for you, the judge will have to decide that the guideline amount would be unfair to your child or to either parent. (Wis. Stat. § 767.511 (2024).)
Learn more about how child support works in Wisconsin, including the factors judges must consider when they're deciding whether to depart from the guideline amount of support, as well as adjustments and additions to support.
Typically, you'll apply for child support as part of the process of filing for divorce in Wisconsin.
If you aren't married to your child's other parent, you may get help with requesting support by applying for child support services with your local Wisconsin child support agency. If needed, the agency may also help with establishing the child's legal paternity.
Child support is usually paid through income withholding—meaning that the paying parent's employer will take the support payments out of that parent's paychecks and send it to the state. When an income withholding order won't work (such as when parents are self-employed or between jobs), there are other methods of paying child support through the Wisconsin Support Collections Trust Fund. Whatever the payment method, the state will turn over the collected money to the parent who's receiving the child support.
When parents are behind with support payments, Wisconsin's child support agencies can also help enforce child support. Depending on how much is owed, the agencies can take a number of enforcement actions, including reporting the debt to credit bureaus, intercepting income tax refunds, seizing money from bank accounts, placing liens on property (so the delinquent parent can't sell it or borrow money before paying off the debt), suspending the parent's driver's or other licenses, and filing actions in court.
If you want to change the amount of child support you're paying or receiving, you'll need to get an order from a judge. There are different ways to request a modification order:
Whichever route you take, a judge will have to decide whether to change the order. And Wisconsin judges won't do that unless they find there's been a substantial change in circumstances (such as a significant change in the paying parent's income or the child's needs) since the existing order went into effect. (Wis. Stat. § 767.59(1f) (2024).)