North Dakota Child Support
Calculator (2026)
North Dakota is an OBLIGOR-ONLY model — one of the few remaining: support is read from the §75-02-04.1-10 schedule using ONLY the obligor’s net monthly income (the obligee’s income is irrelevant). Schedule: "$800 or less" → $0; $900-$24,900 in $100 rows; fixed amounts at "$25,000 or more". Net income is rounded to the nearest $100 (§-02(5)); state tax modeled as 11% of federal (§-01(6)). Extended parenting (>100 overnights): ×(365 − 0.32 × overnights)/365 credit (§-08.1); equal residential responsibility uses a dual-obligor offset (§-08.2).
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Free Child Support Calculator — North Dakota
How Child Support Is Calculated in North Dakota
North Dakota calculates child support using the OBLIGOR-ONLY percentage of net income (NOT income shares) established under N.D. Admin. Code ch. 75-02-04.1 (authorized by NDCC §14-09-09.7). This is a statutory formula that leaves limited room for judicial discretion on the base calculation amount, ensuring consistency and predictability for families across the state.
The Formula
Obligor net monthly income (rounded to $100) → schedule amount for the number of children.
The calculation begins with determining each parent's net disposable income, which includes virtually all sources of income minus taxes, mandatory payroll deductions, and certain hardship deductions. The court then applies the statutory formula using the time each parent has primary physical responsibility for the children and the applicable income allocation brackets.
Beyond the base formula amount, North Dakotarequires additional contributions for mandatory add-on expenses. These typically include childcare costs necessary for the custodial parent's employment or education, uninsured healthcare expenses for the children, and in some cases, educational and travel costs. These add-ons are split between parents in proportion to their respective incomes.
Primary statute: N.D. Admin. Code ch. 75-02-04.1 (authorized by NDCC §14-09-09.7)
Key Child Support Rules in North Dakota
OBLIGOR-ONLY: the obligee’s income does not change the amount.
Official §75-02-04.1-10 schedule (eff. 1/1/2019): $800 or less → $0; fixed rows at $25,000+.
Net income rounds to the nearest $100 (§-02(5)); prior-order support is NOT a deduction (multiple-family adjustment instead).
Extended parenting >100 overnights → 0.32/overnight credit (§-08.1).
Equal residential responsibility → both-ways offset (§-08.2).
What Makes North Dakota Child Support Unique
One of the few obligor-only guideline states.
Very low state income tax (0/1.95/2.5%).
Calculate Your North Dakota Child Support
Answer a few questions about your income, custody, and children. Get your personalized estimate.
North Dakota Divorce Procedure at a Glance
Residency Requirement
6-month residency requirement (§14-05-17)
Mandatory Waiting Period
No statutory waiting period
No-Fault Ground
Irreconcilable differences
State Income Tax
Very low: 0% / 1.95% / 2.5% (post-2023 HB 1158).
More North Dakota Divorce Calculators
Frequently Asked Questions About North Dakota Child Support
How is child support calculated in North Dakota?
North Dakota uses the OBLIGOR-ONLY percentage of net income (NOT income shares) under N.D. Admin. Code ch. 75-02-04.1 (authorized by NDCC §14-09-09.7). North Dakota is an OBLIGOR-ONLY model — one of the few remaining: support is read from the §75-02-04.1-10 schedule using ONLY the obligor’s net monthly income (the obligee’s income is irrelevant). Schedule: "$800 or less" → $0; $900-$24,900 in $100 rows; fixed amounts at "$25,000 or more". Net income is rounded to the nearest $100 (§-02(5)); state tax modeled as 11% of federal (§-01(6)). Extended parenting (>100 overnights): ×(365 − 0.32 × overnights)/365 credit (§-08.1); equal residential responsibility uses a dual-obligor offset (§-08.2).
What factors affect North Dakota child support amounts?
Key factors include both parents' income, the number of children, custodial time share, mandatory add-on expenses (childcare, health insurance), and any applicable deductions. OBLIGOR-ONLY: the obligee’s income does not change the amount.
Can North Dakota child support be modified after the divorce?
Yes. Either parent can request a modification if there has been a material change in circumstances, such as a significant change in income, custody arrangements, or the needs of the child. The court will recalculate support using the same statutory formula.
What is the North Dakota child support formula?
Obligor net monthly income (rounded to $100) → schedule amount for the number of children.
Know Your North Dakota Child Support Number
Get a personalized child support calculation based on North Dakota's actual statutory formula.
Start My Free North DakotaEstimate →This tool provides educational estimates based on North Dakota family law and does not constitute legal advice. Child support calculations are approximations of the statutory formula and may differ from court-ordered amounts. Consult a licensed North Dakota family law attorney before making decisions. Primary statute: N.D. Admin. Code ch. 75-02-04.1 (authorized by NDCC §14-09-09.7).