The amended income shares child support guidelines model will go into effect on January 1, 2019, signed into law as Public Act 100-0923 on August 17, 2018.
Illinois Income Shares Overview (pdf)
Technical Documentation: Illinois Schedule of Basic Obligations and Standardized Net Income Table (pdf)
2018 Addendum to the Illinois Schedule of Basic Obligations and Standardized Net Income Table (pdf)
2018 Gross to Net Income Conversion Table Using Standardized Tax Amounts (pdf)
Income Shares Schedule Based on Net Income (pdf)
Support Obligation Worksheet (pdf)
Shared Physical Care Support Obligation Worksheet (pdf)
Illinois Child Support Estimator
Frequently Asked Questions (pdf)