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Hawaii Child Support Calculator (2026)

In Hawaii, the formula first makes sure each parent can cover their own basic living costs, then sets support for the children from both incomes, plus a share of any extra income. Use the free calculator below for an instant estimate.

How it's calculated
Both parents' income (basic needs first)
Income used
Take-home pay (after taxes)
Last updated
2024
Verified
2026-05-30

Source: HI Guidelines (HRS § 576D-7)

Calculate Your Hawaii Child Support

Free estimate — official Hawaii guidelines

Your income after taxes and required deductions

How Much Is Child Support in Hawaii?

If you make $60,000 a year in Hawaii, child support for 1 child is estimated at $619 per month ($7,428 per year). Calculated after applying the self-support allowance and standard of living adjustment.

$1,000/week ($52,000/year): approximately $564/month for 1 child.

Hawaii Child Support Estimates by Income (2026)

Annual Income 1 Child 2 Children 3 Children
$40,000/yr $507/mo $854/mo $1,201/mo
$50,000/yr $551/mo $859/mo $1,167/mo
$60,000/yr $619/mo $910/mo $1,202/mo
$70,000/yr $693/mo $976/mo $1,259/mo
$80,000/yr $771/mo $1,049/mo $1,326/mo
$100,000/yr $931/mo $1,202/mo $1,473/mo
$120,000/yr $1,094/mo $1,362/mo $1,628/mo

Based on the Melson Formula with standard assumptions. Compare all states →

How Child Support Is Calculated in Hawaii

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
Technical details and legal basis

Hawaii uses the Melson Formula model (HI Guidelines (HRS § 576D-7)) to calculate child support. This model first ensures each parent retains enough for basic needs (self-support allowance), then calculates the child's primary support need, and applies a standard of living adjustment.

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 Calculation

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

Step 1: Combined income: $8,000

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

Step 3: Look up basic obligation for $8,000 combined and 2 children.

Step 4: Multiply by Parent A's share (62.5%).

Adjustments for health insurance, child care, and parenting time may apply.

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.

Hawaii Child Support FAQ

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

Uses the official HI Guidelines (HRS § 576D-7) (2024 guidelines). Last verified: 2026-05-30.

Disclaimer: Estimates only, not legal advice. Actual amounts are set by Hawaii courts. Full disclaimer.

Methodology: Melson Formula model per HI Guidelines (HRS § 576D-7).

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