California child support is calculated using the State Uniform Guideline which is an algebraic formula contained in Family Code § 4053. The algebraic formula factors in
(1) the amount of both parents’ income that can be used for child support,
(2) the higher earning parent’s net monthly disposable income,
(3) the higher earning parent’s percentage of time in which they will have primary physical responsibility of the child relative to the other parent, and
(4) the total net monthly disposable income of both parents.
Unfortunately for the high-earning parent the formula weighs income and time available for primary physical responsibility of the child. Indeed, in awarding custody the court is guided in part by the nature and amount of contact the child has with both parents and the harm from disrupting established patterns of care. In effect, the higher-earning parent who must dedicate their time to work is at a disadvantage in the calculation compared to the stay-at-home parent.
The policies behind the State Uniform Guideline are codified in Family Code § 4053 and explain in part why the guideline places a greater burden on the working parent vs. the stay-at-home parent. According to § 4053 the court must adhere to the following principles when implementing the State Uniform Guideline:
Monday - Friday
9 AM - 5 PM
(916) 250-1610