Child support in Janesville: how it is calculated
Child support in Janesville is set by Wisconsin's statewide guidelines — Rock County courts apply the same table as every other county. Here is the calculation, with the statute it comes from.
Where a Janesville case goes
A Janesville case is filed in the Wisconsin court for Rock County, which applies the state guideline below. Local practice affects timing and paperwork, not the guideline amount. Janesville has about 66,428 residents (Census Bureau, 2024 estimate).
Open the full Wisconsin child support calculator → — same formula, with every input, the statute (Wis. Admin. Code DCF § 150.03) and the date it was last checked.
Formula
17/25/29/31/34% of gross income for 1–5+ children
Type
Percentage-of-income model
Does Janesville have its own rule?
No. Wis. Admin. Code DCF § 150.03 applies across Wisconsin, so a case from Janesville is decided by the same numbers as one filed anywhere else in the state. What changes locally is the courthouse, the clerk's procedure and how long the docket takes — not the amount.
What the statute says
Wis. Admin. Code DCF § 150.03 — Wisconsin Percentage of Income Standard. Wisconsin applies the percentage to GROSS income. Different schedules apply for shared placement (each parent has the child 25%+ of overnights), split placement, and low- or high-income payers — this is the standard schedule.
Last checked 2026-09-02. Read the source →
Also for Janesville
Other Wisconsin cities
Milwaukee · Madison · Green Bay · Kenosha · Racine · Appleton · Eau Claire · Waukesha · Oshkosh · West Allis · La Crosse · Sheboygan
Everything StateTally tracks for Wisconsin → · Child Support in every city →