How can I calculate child support modifications if there is split custody (each parent is custodial for one or more children)?

Here are the steps to take:

1. Save the file under a different name. This will be a “what if” file.

2. In this file, indicate that the oldest child is not of an age to be eligible for child support, by clearing the “Eligible Age” box shown below:

3. See what the “current” child support is. The result will be the modification calculated when that child ages out.

4. Repeat steps 2 and 3 for remaining children.