A judge can adjust this

This guideline figure is a presumption, not a fixed amount. A court can order more or less based on factors the formula doesn't capture — for example: a child's extraordinary medical, dental, or mental-health needs; special or private-school education costs; a large disparity in the parents' incomes or assets; a child's own income or resources; high travel costs for parenting time; other children either parent supports; or either parent's unusual fixed expenses. Deviations require the judge to put their reasons in writing.