 Federal regulations promulgated pursuant to Title IV-D of the Social Security Act require uniform application of child support guidelines throughout a state, but each state can determine its own method of calculating support.At a minimum, requires each state to establish and publish a Guideline that is presumptively (but rebuttably) correct, and review the guideline, at a minimum, every four years.Most states have therefore adopted their own "Child Support Guidelines Worksheet" which local courts and state Child Support Enforcement Offices use for determining the "standard calculation" of child support in that state.