Child Support Calculation Worksheet

IMPORTANT: THIS IS A PREPARATION GUIDE — NOT THE OFFICIAL COURT WORKSHEET

Hawaii requires the use of the official Child Support Guidelines Worksheet (Appendix A-1) for child support calculations.
This template provides the substantive content and calculation methodology to help you
prepare — but you must transfer your figures to the official worksheet before filing.
The official form is available at https://www.courts.state.hi.us/child-support-guidelines.
Do not file this document directly with the court.

CHILD SUPPORT CALCULATION WORKSHEET

State of Hawaii — Melson Formula (HRS § 576D-7)

Table of Contents

1. Case Information
2. Children Subject to This Order
3. Income Determination
4. Self-Support Allowance
5. Primary Child Support Need (PCSN)
6. Primary Support Obligation
7. Standard of Living Adjustment (SOLA)
8. Additional Adjustments
9. Total Child Support Obligation
10. Deviation Factors
11. Duration and Modification
12. State-Specific Notes
13. Sources and References

1. Case Information

2. Children Subject to This Order

Total Number of Children: [____]

Custody Arrangement:
☐ Primary Physical Custody — Parent A
☐ Primary Physical Custody — Parent B
☐ Joint Physical Custody
☐ Split Custody

3. Income Determination

Parent A — Monthly Income

Parent A — Mandatory Deductions:

Parent B — Monthly Income

Parent B — Mandatory Deductions:

4. Self-Support Allowance

☐ Parent A's income below self-support allowance
☐ Parent B's income below self-support allowance

5. Primary Child Support Need (PCSN)

6. Primary Support Obligation

7. Standard of Living Adjustment (SOLA)

SOLA Percentage:
☐ 1 child: 10%
☐ 2 children: 20%
☐ 3+ children: 30% (maximum)

8. Additional Adjustments

Health Insurance

Extraordinary Expenses

9. Total Child Support Obligation

Monthly Child Support Payment: $ [________________________________]

10. Deviation Factors

☐ No deviation requested

☐ Deviation requested based on:

☐ Extraordinary medical or educational expenses
☐ Special needs of the child
☐ Exceptional travel costs (inter-island or mainland visitation)
☐ Child's independent income
☐ Tax consequences
☐ Shared custody arrangement
☐ High cost of living in Hawaii
☐ Military deployment or unique military circumstances
☐ Other: [________________________________]

Proposed deviation amount: $ [________________________________]

Justification:
[________________________________]
[________________________________]

11. Duration and Modification

Duration of Support:

• Support continues until the child reaches age 18, or
• Through high school graduation if the child is still in school (but not beyond age 19)
• ☐ Child is emancipated
• ☐ Child marries
• ☐ Child enters active military duty
• ☐ Court-ordered post-majority support for full-time student (HRS § 580-47)
• ☐ Other terminating event: [________________________________]

Modification:

☐ This is a modification of a prior order dated [__/__/____]
☐ Existing order amount: $ [____________] per month
☐ Recalculated amount: $ [____________] per month
☐ Material change in circumstances: ☐ Yes ☐ No

12. State-Specific Notes

1. Melson Formula: Hawaii uses the Melson Formula, which is a variation of the Income Shares Model. Only Delaware, Hawaii, and Montana use this approach.

2. Net Income Basis: Hawaii calculates based on net income after taxes and social security deductions, not gross income.

3. Self-Support Allowance: The formula ensures each parent retains enough income for basic living needs before child support is calculated, based on the Hawaii federal poverty level.

4. SOLA Percentages: The Standard of Living Adjustment is 10% per child, capped at 30% for three or more children.

5. High Cost of Living: Hawaii's cost of living is significantly higher than the mainland U.S. The guidelines account for this through the PCSN base amounts tied to the Hawaii federal poverty level.

6. Inter-Island Travel: Travel costs for visitation between Hawaiian islands or to/from the mainland may be considered as an extraordinary expense or deviation factor.

7. Military Presence: Hawaii has a significant military population. Military pay (including allowances) is generally included in income, though specific housing allowances may be treated differently.

13. Sources and References

• Hawaii Child Support Guidelines 2024
• HRS § 576D-7 — Guidelines for Child Support
• Hawaii Child Support Worksheet (CSG-A)
• Hawaii Child Support Guidelines — FindLaw

CERTIFICATION

I declare under penalty of perjury that the information provided in this worksheet is true and correct to the best of my knowledge.

Parent A Signature: [________________________________] Date: [__/__/____]

Parent B Signature: [________________________________] Date: [__/__/____]

Attorney for Parent A: [________________________________] Bar #: [____________]

Attorney for Parent B: [________________________________] Bar #: [____________]