NPO report for 2022 indicates both FL and CA are getting close to A on shared parenting. In shared parenting, 50-50 custody is the presumed option, with equal parenting time. Also cost of rearing children is to be shared equally with CS = 0 if both parents earn the same. Unfortunately this leads to shockingly lower payments in case the non-custodial parent earns much more than the custodial parent. For example in case of FL where the husband earns $1M and wife makes $100K, the monthly CS payment for 50-50 custody will be approx $800 per month ($500 if he pays for medical insurance) https://www.sharedparenting.org/csreportcard