Directly from a Florida child support order. It is a Gracie says:
The toal amount to be deducted from the obligor's income may not exceed those limits established by the Consumer Credit Protect Act, 15 U.S.C. 1673(b) (50% of disposable income where there is a second family, 60% where there is no second family and an additional 5% of either limit if teh arrearage is equal to twelve (12) weeks or more in support payments).