Child Support Calculation Worksheet

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

New Hampshire requires the use of official form NHJB-2101-FP (Child Support Guidelines
Worksheet) 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.nh.gov/documents/child-support-guidelines-worksheet.
Do not file this document directly with the court.

CHILD SUPPORT CALCULATION WORKSHEET

State of New Hampshire — Percentage of Net Income Model

Court: [________________________________]
County: [________________________________]
Case Number: [________________________________]
Judge/Marital Master: [________________________________]

TABLE OF CONTENTS

1. Party and Children Information
2. Gross Income Determination
3. Net Income Calculation
4. Combined Net Income and Guideline Percentage
5. Total Support Obligation
6. Additional Expenses
7. Net Child Support Order
8. Deviations from Guidelines
9. Duration and Termination
10. New Hampshire-Specific Notes

1. PARTY AND CHILDREN INFORMATION

Obligee:
Name: [________________________________]
Address: [________________________________]
Employer: [________________________________]

Obligor:
Name: [________________________________]
Address: [________________________________]
Employer: [________________________________]

Children Subject to This Order:

Parenting Arrangement:
☐ Primary residential responsibility — Obligee
☐ Primary residential responsibility — Obligor
☐ Shared residential responsibility (equal or near-equal)
☐ Split parenting (each parent has primary residence of at least one child)

2. GROSS INCOME DETERMINATION

☐ Income imputed to Obligee — Basis: [________________________________]
☐ Income imputed to Obligor — Basis: [________________________________]

3. NET INCOME CALCULATION

4. COMBINED NET INCOME AND GUIDELINE PERCENTAGE

Combined Monthly Net Income: $[________]

Number of children subject to this order: [____]

Guideline Percentage (from DHHS Guideline Table): [____]%

Total Support Obligation: $[________] x [____]% = $[________] per month

5. TOTAL SUPPORT OBLIGATION

6. ADDITIONAL EXPENSES

7. NET CHILD SUPPORT ORDER

Monthly child support order: $[________]
Obligor: ☐ Obligee ☐ Obligor

8. DEVIATIONS FROM GUIDELINES

☐ No deviation requested
☐ Deviation requested — Basis:

☐ Extraordinary medical, dental, or educational expenses of the child
☐ Significantly higher or lower expenses in relation to the child
☐ The economic consequences of the presence of stepparents or other household members
☐ Extraordinary expenses of exercising parenting time
☐ The economic consequences of providing for the special needs of a child
☐ The economic consequences to either party of the disposition of property
☐ State tax consequences
☐ The obligor's or obligee's total support obligation to other children
☐ Significantly higher or lower income than the guidelines table covers
☐ Other: [________________________________]

Requested adjustment: $[________] per month (☐ increase / ☐ decrease)
Justification: [________________________________]

9. DURATION AND TERMINATION

Child support shall continue for each child until:
☐ The child reaches age 18
☐ The child graduates from high school or reaches age 19, whichever is earlier
☐ The child is emancipated
☐ Other: [________________________________]

10. NEW HAMPSHIRE-SPECIFIC NOTES

• Percentage of Net Income Model: New Hampshire uses a percentage of combined net income, with percentages from the DHHS Guideline Table varying by income level and number of children (RSA 458-C:3).
• Standard Deductions: Deductions use standardized IRS withholding table amounts published annually by DHHS, not actual tax amounts paid.
• No State Income Tax: New Hampshire does not have a broad-based personal income tax on wages, which affects the net income calculation.
• DHHS Guideline Table: The guideline percentages and tables are published by the Bureau of Child Support Services and updated periodically.
• Quadrennial Review: RSA 458-C requires the guidelines to be reviewed at least every four years. A review RFP was issued for 2026.
• Modification: Either party may petition for modification upon a showing that the circumstances have substantially changed since the entry of the existing order.

VERIFICATION

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

Obligee:
Signature: [________________________________]
Printed Name: [________________________________]
Date: [__/__/____]

Obligor:
Signature: [________________________________]
Printed Name: [________________________________]
Date: [__/__/____]

SOURCES AND REFERENCES

• RSA 458-C — Child Support Guidelines
• RSA 458-C:3 — Child Support Formula
• 2025 Child Support Guidelines (DHHS PDF)
• NHBA — NH Child Support Guidelines