One of the biggest surprises for parents in family court is learning what judges don’t consider when deciding child support. Many people walk in with misconceptions, thinking it’s about who bought the last birthday gift, who’s the “better parent,” or whether paying for extra clothes and school supplies will reduce their support amount.
The reality? Child support in Wisconsin is primarily driven by numbers, documentation, and state guidelines—not who tells the most emotional story in court.
As a family law attorney with 20 years of experience, I’ve seen the same misunderstandings come up again and again. Let’s clear those up by looking at the five main factors judges actually use when calculating child support.
Factor 1: Income (And It’s More Than Just Your Paycheck)
When it comes to child support, income is the foundation. Judges don’t just look at your base salary. They review your entire financial picture, which can include:
- Wages and salary from your primary job
- Overtime, bonuses, and commissions (if earned regularly)
- Side hustles like DoorDash, Uber, or freelance work
- Rental or investment income
If it’s money you regularly earn, it counts.
Some parents try to hide income by working under the table or not reporting cash payments. Judges notice when a lifestyle doesn’t match reported income, and the other parent often brings it up. This can damage your credibility.
Tip: Don’t guess at your income. Bring recent tax returns, pay stubs, and proof of any extra earnings. Accuracy builds credibility and ensures a fair calculation.
Factor 2: Parenting Time (Overnights Matter)
The second factor is parenting time, specifically overnight placement. Judges look at how many nights your child spends in your care over a two-week cycle.
Here’s why this matters: when your child stays overnight, you’re covering food, utilities, housing, and daily needs. The more overnights you have, the more expenses you’re already carrying, which can reduce your support obligation.
For example, if you move from every other weekend (about four nights a month) to a 50/50 placement schedule, your support could decrease significantly.
Tip: Always document your actual parenting time. If you’re consistently taking more overnights than your current order states, keep a record. Then, file a motion to officially update your placement order so the court recognizes it.
Factor 3: Child Expenses
Judges also consider specific child-related expenses, such as:
- Health insurance premiums (if one parent is covering the child)
- Daycare or after-school care costs
- Out-of-pocket medical expenses
- Significant extracurricular activity costs
Health insurance premiums are the easiest to get credited toward support, while daycare often requires stronger evidence.
Tip: Save your receipts and invoices. If you can’t prove the expense, the judge can’t consider it.
Factor 4: State Guidelines
Every state has a child support formula, and Wisconsin’s judges are required to use it. In Wisconsin, the guideline percentages of gross income are:
- 17% for one child
- 25% for two children
- 29% for three children
- 31% for four children
- 34% for five or more children
These percentages apply when the paying parent has less than 25% placement time. Judges can then adjust based on parenting time, health insurance, daycare, and other expenses.
Many parents are shocked to learn that judges don’t just “split things down the middle.” The guidelines are the starting point, and adjustments only happen if your facts justify it.
Tip: Run the numbers yourself before court. Knowing the guideline amount gives you realistic expectations and helps you prepare your arguments.
Factor 5: Special Circumstances
Finally, judges can make adjustments in special cases, such as:
- Intentional unemployment or underemployment – If a parent quits a job or works less on purpose, judges can assign income based on earning potential.
- Extraordinary needs – A child with significant medical or educational costs may justify support changes.
- Multiple obligations – If a parent is paying support in multiple cases, this can affect calculations.
Tip: Don’t assume cutting your hours will reduce your support. Judges can impute income if they believe you’re capable of earning more.
What Judges Don’t Consider
Just as important as knowing what counts is knowing what doesn’t. Judges generally don’t care about:
- Who bought the last birthday gift
- Who paid for sports fees last year without proof
- Which parent “feels” like they’re paying more
- Emotional arguments about fairness between parents
Judges focus on stability for the child—not fairness between adults.
Final Takeaway
To recap, Wisconsin judges base child support decisions on:
- Income from all sources
- Parenting time, especially overnights
- Documented child expenses
- State guidelines as the baseline formula
- Special circumstances like medical needs or underemployment
If you want your child support order to reflect your true situation, focus on these factors and bring solid documentation. Judges need evidence, not stories, to make fair decisions.
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