At this point in the FL-150 form, the court is trying to figure out "your" monthly expenses in "your" household, regardless of how the expenses are paid. 

The big factors in calculating child support are the incomes of the parents and the percentage of time with the child or children.  While it is important to get a somewhat accurate number for expenses, the court realizes that you are in some sense, making your best guess at these numbers.

Disclaimer: The above is not legal advice. I cannot give you sound advice without knowing more information. It is intended to raise some issues for you to discuss with your own lawyer.

Answered by Greg Freeze on 05.24.10.