@mcavoym1  As far as I know, QuickBooks has no way to do that. Would be handy, though.

When I run across this issue, I typically set up an Excel sheet with a couple formulae. This allows the person handling payroll to enter the Net Pay into a cell and see how much they should be holding out for child support.

I prefer using the IF formula for this, but I imagine there are a lot of ways to set up the required formulae in Excel.

Hi there, mcavoym1. I understand the importance of limiting the deduction to a maximum % of your child support, especially in keeping your payroll data accurate.

At this time, this functionality is unavailable. As a workaround, you may consider following the solution shared by FishingForAnswers. 

We can also send a feature request directly to our Product Development team. It helps us improve your experience and the features of the program. Here's how:

1. Go to the Help menu and then select Send Feedback Online.
2. Choose Product Suggestion.
3. Add the type of feedback.
4. Type in your feature suggestion.
5. Once done, click Send Feedback.
   
   

Would you like some assistance in managing other employee information? Or do you need additional assistance setting up garnishment? Let me know, and I'll guide you through the steps again. 

It IS available. If you haven't set it up, do it in Chart of Accounts. Otherwise, "Employees", Run payroll Checkup and as you hit next, next, & come to that page showing this set up in a list of other deduction types, click on whatever you named it, and it has the same adjustments & set up there.

A % of paycheck, an exact amount (PER month due), max if needed depending on the schedule, and a time schedule. We have one set to "1st of each month" it starts over at zero. 

Hope that helps

I meant to say Payroll Item List rather then chart of accounts. My bad.