Hawaii Child Support Calculator (2026)

Estimate your child support payments in Hawaii using our free calculator based on the official HI Guidelines (HRS § 576D-7). Enter your income details below to get an instant estimate.

Hawaii Child Support Calculator

Based on Hawaii's 2024 HI Guidelines (HRS § 576D-7)

$
$

This is an estimate only. See our full disclaimer.

Key Facts: Child Support in Hawaii

  • Hawaii uses the Melson Formula, setting higher allowances to reflect the state's elevated cost of living.
  • Each parent receives a self-support allowance of $1,400 per month before child support is calculated.
  • The primary support need per child is set at $450 per month under Hawaii guidelines.
  • An 18% standard of living adjustment (SOLA) is applied to remaining income after basic needs are met.
  • Hawaii bases calculations on net income after taxes and mandatory deductions.

Source: HI Guidelines (HRS § 576D-7) • Last verified: 2026-05-30

How Much Is Child Support in Hawaii?

If you make $60,000 a year in Hawaii, child support for 1 child is estimated at $904 per month ($10,848 per year) based on the HI Guidelines (HRS § 576D-7). This is calculated after subtracting the self-support allowance and applying the standard of living adjustment.

If you make $1,000 a week ($52,000/year) in Hawaii, child support for 1 child is approximately $790/month.

Hawaii Child Support Estimates by Income (2026)

Annual Income 1 Child 2 Children 3 Children
$40,000/yr $629/mo $911/mo $1,193/mo
$50,000/yr $762/mo $1,026/mo $1,290/mo
$60,000/yr $904/mo $1,159/mo $1,415/mo
$70,000/yr $1,048/mo $1,299/mo $1,549/mo
$80,000/yr $1,195/mo $1,443/mo $1,689/mo
$100,000/yr $1,491/mo $1,733/mo $1,977/mo
$120,000/yr $1,788/mo $2,029/mo $2,270/mo

Based on the Melson Formula with standard assumptions. Actual amounts vary based on individual circumstances. Compare all states →

How Child Support Is Calculated in Hawaii

Hawaii uses the Melson Formula model to calculate child support obligations. This model first ensures each parent retains enough income for their own basic needs (self-support allowance), then calculates the child's primary support need, and finally applies a standard of living adjustment.

Factors That Affect Child Support in Hawaii

Both parents' net monthly incomes
Number of children requiring support
Self-support allowance for each parent
Primary support need per child
Health insurance costs for the children
Child care expenses
Extraordinary educational expenses
Standard of living adjustment on remaining income

Important Notes for Hawaii

  • Hawaii uses the Melson Formula model, which accounts for the higher cost of living in the state by setting higher self-support allowances and primary support needs.
  • The formula ensures each parent retains enough income for basic self-support before child support obligations are calculated.
  • An 18% standard of living adjustment is applied to remaining net income, allowing children to benefit from their parents' higher earnings.

Example Child Support Calculation in Hawaii

Scenario: Parent A earns $5,000/month, Parent B earns $3,000/month, 2 children.

Step 1: Combined monthly income: $5,000 + $3,000 = $8,000

Step 2: Parent A's income share: $5,000 / $8,000 = 62.5%

Step 3: Look up basic obligation from the guidelines schedule for $8,000 combined income and 2 children.

Step 4: Multiply the basic obligation by Parent A's share (62.5%) to determine their payment.

Note: Additional adjustments for health insurance, child care, and parenting time may apply.

Frequently Asked Questions About Hawaii Child Support

How is child support calculated in Hawaii?
Hawaii uses the Melson Formula, a three-step model. First, each parent's self-support allowance ($1,400/month) is subtracted from their net income. Second, the primary support need for each child ($450/month) is allocated between parents based on their income shares. Third, an 18% standard of living adjustment is applied to any remaining income to allow children to share in their parents' standard of living.
Why are Hawaii child support amounts higher than other states?
Hawaii's child support guidelines reflect the state's significantly higher cost of living. The self-support allowance ($1,400/month) and primary support need per child ($450/month) are set higher than many other states to account for the increased costs of housing, food, and other necessities in Hawaii.
What income is used for Hawaii child support?
Hawaii uses net income for child support calculations. Net income is gross income minus federal and state income taxes, Social Security, Medicare, and mandatory retirement contributions. All sources of income are considered, including wages, self-employment earnings, military allowances, and investment income.
Can Hawaii child support be modified?
Yes, Hawaii child support orders can be modified upon a showing of a material change in circumstances. Common reasons include significant changes in either parent's income, changes in custody or visitation, changes in the child's needs, or changes in health insurance costs. The Child Support Enforcement Agency can review orders every three years.
How long does child support last in Hawaii?
In Hawaii, child support generally continues until the child turns 18, or until age 23 if the child is enrolled in a post-secondary educational institution on a full-time basis. Support may also continue for adult children with disabilities who are unable to be self-supporting.

About This Calculator

This calculator uses the official HI Guidelines (HRS § 576D-7) (2024 guidelines) to estimate child support in Hawaii. Calculations were last verified against the official source on 2026-05-30.

Disclaimer: This calculator provides estimates only and does not constitute legal advice. Actual child support amounts are determined by Hawaii courts and may differ based on factors not included here. For legal advice, consult a Hawaii family law attorney.

Our methodology: Based on the Melson Formula model as defined in the HI Guidelines (HRS § 576D-7). Updated for 2026.

Child Support Calculators for Other States

Alabama Income Shares model Alaska Percentage of Income model Arizona Income Shares model Arkansas Income Shares model California Algebraic Formula (§ 4055) model Colorado Income Shares model

View all 50 state calculators →