How Hawaii Calculates Child Support
Hawaii uses the Income Shares model to determine child support obligations. This page explains the guidelines, formula, and key factors.
Model Type
Income Shares
Income-shares schedule based on combined gross income of both parents and number of children; each parent's obligation is prorated by income share; adjusted for custody arrangement and add-ons (childcare, health insurance, extraordinary expenses).
Income Basis & Definitions
gross
Selects the base-support amount from the guidelines schedule.
Source: HRS § 576D-7: Child support guidelines scheduleParent A gross monthly income used by guideline.
Source: HRS § 576D-7: Gross income definitionParent B gross monthly income used by guideline.
Source: HRS § 576D-7: Gross income definitionParenting Time Handling
Calculator selects custody model/worksheet and applies corresponding formula.
Source: Custody arrangement and worksheet selectionParenting time variable for shared/joint custody adjustments.
Source: Parenting time adjustmentDeductions & Adjustments
Adjustments for other dependents or court-ordered support for other children.
Source: Other children / preexisting support adjustmentSpousal support paid or received may adjust income calculation.
Source: Spousal support adjustmentAdd-Ons & Allocation
Work-related childcare costs added and allocated between parents.
Source: Childcare add-onChild's health insurance premium share and uninsured medical allocation.
Source: Medical supportCaps, Minimums & Deviations
Schedule caps at a combined income level; above-cap support is court discretion.
Source: Maximum schedule incomeDeviation allowed for exceptional circumstances; requires findings.
Source: Exceptional circumstances / deviation