In a shared custody situation where I pay the set-off amount (we agreed to a little less than the table amounts actually) because my salary is higher. Our separation agreement states that Special expenses would be shared in proportion to our income which I'm fine with but what about ordinary expenses (particulary extracurricular activities)? I understand from a friend who receives CS that she pays for all clothes (at both houses) and ordinary activitiy fees out of the CS. He doesn't pay anything for these things since he pays CS. I have a hard time getting even a pro rata share of ordinary activity fees even though I pay the CS. Usually she just says to everything that she can't afford it even though these programs are ones that the kids were doing before we split and were definitely within the means of the family before the split. I'd be happy with her just splitting the cost of these programs.