Child Support

In Wisconsin, child support is calculated using guidelines published in Chapter DCF 150 of the Wisconsin Administrative Code.  

Wisconsin Child Support Program Website 

In general, the guidelines require a person paying child support to pay a percentage of his/her gross income.  17% for 1 child, 25% for 2 children, 29% for 3 children, 31% for 4 children, and 34% for 5 or more children.


Information Online

Child Support
General Overview

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Effective February 7, 2013

Child Support



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Contact Information

Child Support Agency
Rock County Courthouse
51 South Main Street
Floor 3R
Janesville, WI  53545

Phone:       (608) 757-5700
Fax:           (608) 757-5710

Monday - Friday Hours  
8:00 AM - 5:00 PM

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Rock County, State of Wisconsin
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