Child Support Calculator

The following automated tools are available to simplify the process of calculating Tennessee child support orders under the State’s Child Support Guidelines:

Note: Public users may need to add this web page as a trusted site on their computer in order to download Windows Worksheets properly. Please see this guide for instructions on how to add trusted websites to your internet browser (preferably Chrome).

Excel Calculator:

Important: In order for the WIN and MAC calculators to work correctly, they must be DOWNLOADED and SAVED. Calculations completed in the online versions will not work.

It is recommended to use the Desktop Office 365 Version with the ActiveX control feature for Excel, as the desktop security protection feature on Excel.  

The Child Support and Credit Worksheets are an Excel document that uses automated calculations to simplify completing them. After downloading and opening the document, you will find a series of tabs along the bottom of the page, one for each Worksheet. In addition, there is a tab with instructions for completing the Worksheets and another containing the TN Schedule of Basic Child Support Obligations. 

REQUIRES: Microsoft Excel (version 97 or later). It may be necessary to adjust the macro security settings to use this document. 

IOS Calculator:

Child Support Calculator of TN


Tennessee Department of Human Services has made this app available to simplify the process of calculating Tennessee child support orders under the State's Child Support Guidelines. The calculator will calculate support and allow for the results to be sent via SMS text message and/or email. This calculator is for educational and informational purposes only. Only a court order or other Tribunal can set child support. 

Web Style Calculator: 

State TN Calculator 2021v1.0 

When you enter requested information in a series of 8 steps, the Calculator will generate a completed document titled Child Support Worksheet that you can print and save. The Calculator is not compatible with MacOS at this time. However, above you can download an Excel version of the Child Support Worksheet that is Mac-compatible.

REQUIREMENT: To be able to save a CS Worksheet that the Calculator creates, you must first download the PDF Creator tool, which is available at no cost at See the Technical Help page if you have trouble downloading PDF Creator.

Having difficulties? Please refer to our Technical Help page if you need additional assistance.

If  you need additional information on interpreting the Child Support Guidelines, please refer to the Useful Materials page.