Every state. Every territory. Plainly explained.
Browse formulas, custody rules, expense handling, and modification standards across all 56 U.S. jurisdictions.
States
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Civil Rule 90.3 — flat percentages of adjusted annual income.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Algebraic income-shares formula (Family Code § 4055) with timeshare percentage central to the calculation.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Melson formula — both parents reserve self-support, then primary needs and standard-of-living allocations.
Income-shares with substantial-time adjustment kicking in at 20% of overnights.
Income-shares with parenting-time deviation available but not formulaic by default.
Melson formula with Hawaii-specific primary needs amount.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income-shares with shared-care multiplier applied at 40% overnights or more.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Statutory percentages of adjusted gross income; court may deviate.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Melson formula incorporating personal allowance and standard-of-living adjustment.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Tiered percentages of obligor gross monthly income with statutory caps per child.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
CSSA percentage-of-income (17/25/29/31/35%) up to a statutory income cap, then judicial discretion.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Percentage of obligor net monthly income via state schedule.
Income-shares using statewide schedule revised in 2019; low-income SSR applied first.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income-shares using PA basic support schedule with self-support reserve test.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Percentage of obligor's net resources up to a statutory cap (currently $9,200/month).
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
DCF 150 percentage standard applied to gross income with shared/split overrides.
Income Shares model with standard parenting-time credit and pro-rata expense allocation.
District
U.S. Territories
Puerto Rico ASUME guidelines — income-shares variant with mandatory administrative review every three years.
Guam follows an income-shares model administered by the Office of the Attorney General Child Support Enforcement Division.
U.S. Virgin Islands uses an income-shares model administered by the Paternity & Child Support Division.
American Samoa applies a simplified income-shares calculation under territorial code, with court discretion for cost of living.
Northern Mariana Islands follow income-shares principles via CNMI Child Support Enforcement.