Child Support Guidelines

The Guidelines are based on an Income Shares model that establishes the dollar amount of child support obligations based on the amount of parents’ combined adjusted gross income and the number of children for whom the child support order is being established or modified.

The most recent changes to the Tennessee Child Support Guidelines were effective October 1, 2021. The links provided on this page will direct you to the current Child Support Guidelines and to automated child support calculators, a child support calculator app and other useful information.

IMPORTANT: Please visit the Calculator and Worksheet page regularly to check for updates to the calculators. Using an outdated automated Calculator or Child Support Worksheet may give incorrect results.

Calculator and Worksheets

Links to tools in English and Spanish that simplify and reduce the time it takes to complete the Child Support Worksheet and Credit Worksheet.


Links to the Rules of the Tennessee Department of Human Services, Child Support Services Division. The Rules include the Child Support Guidelines (1240-02-04) which is used to determine the amount of child support ordered on all Tennessee child support orders. 

Frequently Asked Questions

Answers to the most frequently asked questions regarding Income Shares and the Child Support Worksheets.

Useful Materials

Links to Training Materials, Child Support Guidelines Definitions and A Guide to Tennessee's Child Support Worksheet.


Links to historical documents, features, and downloads from previous versions of the Tennessee Child Support Guidelines.