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Child Support Estimator

Illinois Department of Healthcare and Family Services


Please note, the Illinois Child Support Estimator has been updated to reflect the 2021 State and Federal income withholding levels, in addition to the United States Department of Health and Human Services Federal Poverty Guidelines for a single person living in Illinois for 2021.   
Last Revised On: 02/18/2021

The Illinois Child Support Estimator is designed to provide a general idea of a child support amount in accordance with the Illinois child support guidelines (750 ILCS 5/505) based upon the information you enter.  This estimator is for informational purposes only.  The Department of Healthcare and Family Services-Division of Child Support Services assumes no responsibility for the accuracy of the child support amount that you see after you enter the information.


The child support amount that you see on this estimator may not be the same amount that the Department or the court establishes.  This amount is meant to be an estimate and is not a guarantee of the amount of child support awarded.  Many factors affect the amount of child support and each situation is different.


For information regarding Legal Notices, Disclaimers, Security and Privacy, see the State of Illinois Privacy Policy



Visit the Child Support Estimator designed for parents using a series of questions to step through the calculation process.


Visit the Child Support Estimator designed for child support professionals or attorneys featuring a streamlined process and enterable data fields not prompted by questions.


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Illinois Healthcare and Family Services

JB Pritzker, Governor • Theresa Eagleson, Director