My ex-wife is taking me back to court for the first time since our divorce 3 years ago. I know that I will have to pay 25% of my current take home pay. However, I am wondering what the law says about how much I can have withheld, how much I can place into my retirement,etc.... Are there any limitations or certain percentages I'm allowed? Any help/thoughts would be appreciated. :)

so long as you meet your support obligation, these things should not be factors as far as I know