North Dakota calculates child support using a percentage-of-income model under N.D. Admin. Code § 75-02-04.1, applying a graduated schedule to the obligor's monthly net income. The state's child support calculator, updated January 1, 2026, determines the payment amount based on the paying parent's net income and the number of children, with a maximum monthly obligation cap at $25,000 net income. Unlike the 41 states using income shares models, North Dakota focuses exclusively on the obligor's earnings, making the child support calculator North Dakota parents rely on simpler to use but uniquely structured.
| Key Fact | Detail |
|---|---|
| Calculation Model | Percentage of obligor's net income |
| Governing Guidelines | N.D. Admin. Code § 75-02-04.1 |
| Governing Statute | N.D.C.C. § 14-09-08.1 |
| Filing Fee | $160 (as of July 1, 2025) |
| Income Cap | $25,000 net monthly income |
| Cap Amount (1 child) | $3,500/month |
| Cap Amount (2 children) | $4,250/month |
| Cap Amount (3 children) | $5,000/month |
| Residency Requirement | 6 months (N.D.C.C. § 14-05-17) |
| Calculator Last Updated | January 1, 2026 |
| Official Calculator | ND HHS Estimate Tool |
What Calculation Model Does North Dakota Use for Child Support?
North Dakota is one of only 9 states that uses a percentage-of-income model rather than the income shares model used by 41 other states. Under N.D. Admin. Code § 75-02-04.1-10, the child support worksheet applies a graduated percentage schedule to the obligor's monthly net income, with the percentage varying based on income level and the number of children. The custodial parent's income does not factor into the base calculation, which distinguishes North Dakota from most other jurisdictions.
The percentage-of-income model means North Dakota courts look at only one parent's financial picture when calculating child support. The obligor (noncustodial parent) provides income documentation, and the court applies the guidelines schedule found in NDAC § 75-02-04.1-10 to determine the monthly obligation. The schedule uses a graduated approach where the effective percentage decreases as income rises, reflecting the reality that higher-income families spend a smaller proportion of earnings on basic child-rearing costs.
North Dakota updated its child support calculator on January 1, 2026, incorporating the most current guidelines. The child support calculator North Dakota provides through its Department of Health and Human Services remains the authoritative tool for estimating obligations, and courts rely on these guidelines as the presumptive correct amount unless deviation is warranted.
How Do You Calculate Net Income for the North Dakota Child Support Calculator?
Net income for North Dakota child support purposes equals gross income minus specific mandatory deductions, as defined in NDAC § 75-02-04.1-01(5). Gross income includes income from any source in any form, excluding means-tested public assistance benefits such as TANF, SSI, and SNAP. The child support worksheet North Dakota courts require starts with this gross income figure and subtracts allowable deductions to arrive at the net amount used in the guidelines schedule.
Allowable deductions from gross income include:
- Federal income taxes calculated at the standard single filing rate
- North Dakota state income taxes (1.95% top marginal rate for 2026)
- FICA payroll taxes (Social Security and Medicare at 7.65% of gross wages)
- Mandatory union dues and required retirement contributions
- Health insurance premiums for the child
- Prior child support obligations for other children
- Spousal support payments from a prior relationship
Sources of gross income that North Dakota courts include when using the child support estimator:
- Wages, salaries, commissions, and bonuses
- Self-employment income (gross receipts minus ordinary business expenses)
- Worker's compensation and disability benefits
- Unemployment insurance benefits
- Pensions, annuities, and retirement distributions
- Social Security benefits (excluding SSI)
- Interest and dividend income
- Rental income (net of expenses)
- Trust or estate income
- Military pay, including allowances for housing and subsistence
North Dakota courts may also impute income to a parent who is voluntarily unemployed or underemployed under NDAC § 75-02-04.1-07. Courts will not impute income when the parent has a permanent disability, receives disability payments, or must remain home to care for a child with unusual emotional or physical needs. When income is imputed, the court assigns an earning capacity based on the parent's education, work history, and local job market conditions.
How Does the North Dakota Child Support Schedule Work?
The North Dakota child support schedule under NDAC § 75-02-04.1-10 applies a graduated percentage to the obligor's monthly net income, with separate columns for 1 through 6 or more children. The obligation amount increases with income but at a decreasing marginal rate, and the schedule caps at $25,000 monthly net income. At the cap, maximum monthly obligations are $3,500 for 1 child, $4,250 for 2 children, and $5,000 for 3 children.
The schedule operates as a lookup table. The obligor identifies their monthly net income row, then reads across to the column matching the number of children owed support. The resulting dollar amount is the presumptive monthly child support obligation. North Dakota courts treat this figure as the correct amount unless a party demonstrates that deviation is appropriate under the criteria in NDAC § 75-02-04.1-09.
| Monthly Net Income | 1 Child | 2 Children | 3 Children |
|---|---|---|---|
| $1,000 | ~$140 | ~$170 | ~$200 |
| $2,500 | ~$350 | ~$425 | ~$500 |
| $5,000 | ~$700 | ~$850 | ~$1,000 |
| $10,000 | ~$1,400 | ~$1,700 | ~$2,000 |
| $15,000 | ~$2,100 | ~$2,550 | ~$3,000 |
| $25,000+ (cap) | $3,500 | $4,250 | $5,000 |
Note: Amounts between cap thresholds are approximate and based on the graduated schedule. Verify exact amounts using the official North Dakota child support calculator. As of March 2026. Verify with your local clerk.
The graduated structure means the effective percentage decreases at higher income levels. For a parent earning $1,000 per month net with 1 child, the effective rate is approximately 14%. For a parent earning $25,000 per month net with 1 child, the effective rate at the cap drops to 14% of $25,000 ($3,500). North Dakota designed this structure to ensure that child support obligations remain proportional to a parent's ability to pay while reflecting actual child-rearing costs.
How Does Equal Residential Responsibility Affect the Calculation?
When parents share equal residential responsibility (50/50 parenting time), North Dakota adjusts the child support calculation under NDAC § 75-02-04.1-08.2. The court calculates each parent's hypothetical obligation as if the other parent had sole custody, then offsets the two amounts, with the higher-earning parent paying the difference. This offset method ensures that the child's standard of living remains consistent across both households.
The equal residential responsibility calculation follows these steps:
- Calculate Parent A's obligation amount using Parent A's net income and the guidelines schedule
- Calculate Parent B's obligation amount using Parent B's net income and the guidelines schedule
- Subtract the smaller obligation from the larger obligation
- The parent with the higher obligation pays the difference to the other parent
For example, if Parent A earns $5,000 monthly net income and would owe $700 for 1 child, and Parent B earns $3,000 monthly net income and would owe $420, the offset calculation yields $700 minus $420, resulting in Parent A paying $280 per month to Parent B. This offset approach recognizes that both parents contribute directly to child-rearing expenses during their respective parenting time and prevents double-counting of costs.
North Dakota courts require documentation of the actual parenting time schedule to verify that residential responsibility is truly equal. A schedule that provides each parent with at least 50% of overnights qualifies for this calculation method. Parents with unequal but substantial parenting time (for example, a 60/40 split) may request a deviation from the standard guidelines amount, but the equal-responsibility offset formula applies only to verified 50/50 arrangements.
What Adjustments Apply Beyond the Base Child Support Amount?
North Dakota adds specific cost-sharing obligations on top of the base child support amount, including health insurance premiums and childcare expenses. Under NDAC § 75-02-04.1-01(6)(d), the cost of health insurance coverage for the child is allocated between parents based on their respective incomes. The obligor's share of health insurance premiums is typically added to the base obligation amount determined by the guidelines schedule.
Additional adjustments that the child support calculator North Dakota courts apply include:
- Health insurance premiums: The court allocates the cost of the child's health insurance coverage. If the obligor provides coverage through an employer plan, the incremental cost attributable to the child (not the entire family premium) is factored into the obligation.
- Uninsured medical expenses: Costs not covered by insurance, including copays, deductibles, orthodontia, and prescription medications, are typically split between parents.
- Childcare costs: Work-related childcare expenses necessary for the custodial parent to maintain employment are shared between the parents.
- Travel expenses for parenting time: When parents live far apart, the court may allocate transportation costs associated with the child traveling between households.
- Children from other relationships: Under NDAC § 75-02-04.1-06, the obligor may receive a deduction for the cost of supporting other children living in the obligor's household, calculated by applying the guidelines schedule to the obligor's net income and the number of other children.
These adjustments can significantly increase or decrease the total monthly payment. A parent earning $5,000 per month net with 1 child might owe approximately $700 in base support, but after adding $200 for health insurance and $300 for childcare costs, the total obligation could reach $1,200 per month. Parents should include all potential adjustments when using the child support estimator to get an accurate projection.
When Can a Court Deviate from the North Dakota Child Support Guidelines?
North Dakota courts may deviate from the guidelines amount when applying the standard calculation would be unjust or inappropriate under NDAC § 75-02-04.1-09. Deviation requires specific findings on the record, and the party requesting deviation bears the burden of proof. Courts may deviate upward or downward depending on the circumstances, but the guidelines amount carries a presumption of correctness that must be rebutted with evidence.
Recognized grounds for deviation from the child support worksheet North Dakota guidelines include:
- The custodial parent's net income is at least 3 times higher than the noncustodial parent's net income, reducing the need for support
- The obligor's net income exceeds $25,000 per month, and the child's actual needs justify a higher or lower amount than the cap
- A child aged 12 or older has greater needs due to activities, education, or social requirements
- A child has a disability or chronic illness requiring additional medical or therapeutic care
- The child attends private school with the noncustodial parent's written consent
- The custodial parent is seeking support for more than 6 children
- The obligor has extraordinary debt from the marriage that limits ability to pay
- The child receives substantial independent income from a trust, employment, or other source
When a court grants a deviation, it must issue written findings explaining why the guidelines amount is unjust and how the deviated amount serves the child's best interests under N.D.C.C. § 14-09-09.7. The deviation order remains subject to future modification if circumstances change. Courts closely scrutinize deviation requests because the guidelines represent the legislature's determination of appropriate support levels based on economic research.
How Do You Modify an Existing Child Support Order in North Dakota?
North Dakota allows modification of child support orders through two pathways: a motion to the court under N.D.C.C. § 14-09-08.1, or an administrative review through the North Dakota Child Support Division of Health and Human Services. Orders in effect for at least 1 year may be modified to align with current guidelines without proving a material change in circumstances. Orders less than 1 year old require proof of a substantial change to justify modification.
The modification process follows these steps:
- Determine eligibility: If the order is at least 12 months old, either parent may request a review and adjustment. If less than 12 months old, the requesting parent must demonstrate a material change such as job loss, disability, or significant income change.
- Request administrative review: Contact the North Dakota Child Support Division to request a review of the existing order. The Division will recalculate using current income and the updated guidelines.
- File a court motion: Alternatively, file a motion to modify with the district court that issued the original order. The filing fee for a modification motion is $80 in North Dakota courts.
- Provide updated financial documentation: Both parents must submit current income verification, including pay stubs (at least 3 months), tax returns (2 most recent years), and documentation of other income sources.
- Attend the hearing: The court reviews updated income, applies the current guidelines schedule, and issues a modified order if the recalculated amount differs from the existing obligation.
The North Dakota Child Support Division conducts reviews every 3 years upon request for cases managed through the IV-D program. Parents can use the child support calculator North Dakota provides to estimate whether their current order aligns with what the guidelines would produce based on updated income figures. A difference of $50 per month or more between the current order and the guidelines calculation typically justifies a formal review.
What Happens If a Parent Fails to Pay Child Support in North Dakota?
North Dakota enforces child support obligations through multiple mechanisms under N.D.C.C. § 14-09-08.1 and federal requirements. The state's Child Support Division employs income withholding as the primary collection method, automatically deducting payments from the obligor's wages, unemployment benefits, or other income sources. Approximately 70% of North Dakota child support collections occur through income withholding orders issued to employers.
Enforcement tools available in North Dakota include:
- Income withholding: Employers must withhold child support from wages within 7 business days of receiving an income withholding order. The withholding amount cannot exceed 50% of disposable earnings for parents supporting another family, or 60% for parents without other dependents, under federal Consumer Credit Protection Act limits.
- Tax refund intercept: Both state and federal tax refunds can be intercepted and applied to past-due child support. North Dakota participates in the Federal Tax Refund Offset Program for arrears exceeding $500.
- License suspension: North Dakota may suspend driver's licenses, professional licenses, and recreational licenses for parents with arrears exceeding $5,000 or 6 months of nonpayment.
- Passport denial: The U.S. State Department denies passport applications and may revoke existing passports for parents owing more than $2,500 in child support arrears under 42 U.S.C. § 652(k).
- Credit reporting: Child support arrears are reported to all 3 major credit bureaus, affecting the obligor's credit score and borrowing ability.
- Contempt of court: Willful nonpayment may result in civil or criminal contempt proceedings, with penalties including fines up to $5,000 and imprisonment for up to 1 year.
- Liens on property: North Dakota may place liens on real property, vehicles, and financial accounts to secure unpaid child support.
Parents experiencing difficulty making payments should immediately contact the North Dakota Child Support Division or file a modification motion rather than simply stopping payments. Arrears continue to accumulate during nonpayment, and interest accrues on past-due amounts. North Dakota does not forgive child support arrears retroactively, meaning unpaid amounts remain due regardless of changed circumstances after the fact.
How to Use the Official North Dakota Child Support Calculator Step by Step
The official North Dakota child support calculator is available through the Department of Health and Human Services and produces estimates based on the current guidelines effective January 1, 2026. The calculator requires the obligor's monthly net income and the number of children to produce a base obligation amount. Additional inputs for health insurance, childcare, and parenting time adjustments produce a more accurate total obligation estimate.
Follow these steps to calculate child support in North Dakota:
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Gather income documentation: Collect the obligor's last 3 months of pay stubs, most recent federal tax return, documentation of self-employment income, and records of any additional income sources (rental income, investment returns, disability benefits).
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Calculate gross monthly income: Add all income sources together and divide annual amounts by 12 to arrive at a monthly gross income figure. Include wages, commissions, bonuses (averaged over 12 months), self-employment net income, and all other sources defined in NDAC § 75-02-04.1-01(5).
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Subtract mandatory deductions: Deduct federal income taxes (at single filing rate), North Dakota state income taxes, FICA taxes (7.65% of gross wages up to the Social Security wage base of $168,600 for 2026), mandatory retirement contributions, and union dues. The result is the obligor's monthly net income.
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Enter net income into the calculator: Input the monthly net income figure into the child support calculator North Dakota provides. Select the number of children covered by this specific support order.
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Apply the guidelines schedule: The calculator references NDAC § 75-02-04.1-10 to produce the base monthly obligation. This amount represents the presumptive correct child support payment.
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Add health insurance costs: Enter the monthly cost of health insurance premiums attributable to the child. The calculator allocates this cost based on the guidelines.
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Add childcare costs: Enter work-related childcare expenses if applicable. The calculator factors these into the total obligation.
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Adjust for parenting time: If parents share equal residential responsibility (50/50), select the equal-time option. The calculator will perform the offset calculation under NDAC § 75-02-04.1-08.2.
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Review the total obligation: The calculator produces a total monthly child support amount combining the base obligation and all adjustments. Print the results for reference during negotiations or court proceedings.
The calculator produces an estimate only. Actual court-ordered amounts may differ based on deviation factors, additional evidence presented at the hearing, or specific circumstances not captured by the calculator. Parents should consult with a North Dakota family law attorney to understand how the guidelines apply to their specific situation.
How Long Does Child Support Last in North Dakota?
Child support in North Dakota continues until the child reaches age 18 under N.D.C.C. § 14-09-08.1, or until the child graduates from high school, whichever occurs later, but not beyond age 19. If a child turns 18 during the school year, support continues through the end of that school year provided the child is still attending high school and has not yet turned 19. North Dakota does not order child support for college-age children absent a voluntary agreement between the parents.
Child support obligations also terminate upon:
- The child's marriage
- The child's enlistment in active-duty military service
- The child's legal emancipation by court order
- The child's death
- The obligor's death (though arrears remain collectible from the estate)
- A court order terminating parental rights
For families with multiple children, the support obligation adjusts as each child ages out. When the oldest child turns 18 (or completes high school), the obligor should request a modification to recalculate the obligation for the remaining children using the child support worksheet North Dakota courts require. The new amount will reflect the reduced number of children on the guidelines schedule. Automatic adjustments do not occur, meaning the obligor must affirmatively seek modification or risk overpaying based on the original multi-child calculation.
Frequently Asked Questions About North Dakota Child Support
How much child support will I pay in North Dakota for one child?
North Dakota child support for 1 child ranges from approximately $140 per month at $1,000 monthly net income to a maximum of $3,500 per month at the $25,000 net income cap under NDAC § 75-02-04.1-10. The exact amount depends on the obligor's net income after deductions for federal taxes, state taxes, and FICA (7.65%). Additional costs for health insurance and childcare are added to the base amount.
Does North Dakota use the income shares model for child support?
North Dakota does not use the income shares model. North Dakota is one of only 9 states that uses a percentage-of-income model under NDAC § 75-02-04.1, which calculates child support based solely on the obligor's (noncustodial parent's) net income. The custodial parent's income is not part of the base calculation, unlike the income shares model used in 41 other states.
How do I access the official North Dakota child support calculator?
The official child support calculator North Dakota provides is available at the Department of Health and Human Services website. The calculator was updated January 1, 2026, to reflect the most current guidelines. Parents enter the obligor's monthly net income and number of children to receive a base obligation estimate under NDAC § 75-02-04.1-10.
Can child support be modified in North Dakota?
North Dakota allows child support modification after 12 months without requiring proof of changed circumstances under N.D.C.C. § 14-09-08.1. For orders less than 1 year old, the requesting parent must demonstrate a material change such as a job loss, disability, incarceration, or income change of $50 or more per month. Either parent may request an administrative review through the North Dakota Child Support Division or file a modification motion with the district court for an $80 filing fee.
What income is included in the North Dakota child support calculation?
Gross income for North Dakota child support includes income from any source in any form under NDAC § 75-02-04.1-01(5), including wages, self-employment earnings, commissions, bonuses, disability benefits, unemployment insurance, pensions, Social Security (excluding SSI), interest, dividends, rental income, and military pay. Means-tested public assistance (TANF, SSI, SNAP) is excluded. Net income equals gross income minus federal taxes, state taxes, FICA (7.65%), and mandatory employment deductions.
How does 50/50 custody affect child support in North Dakota?
With equal residential responsibility (50/50 parenting time), North Dakota uses an offset calculation under NDAC § 75-02-04.1-08.2. Each parent's hypothetical child support obligation is calculated separately, and the parent with the higher obligation pays the difference to the other parent. For example, if Parent A owes $700 and Parent B owes $420, Parent A pays $280 per month. This method applies only to verified 50/50 overnight schedules.
What is the maximum child support in North Dakota?
North Dakota caps child support obligations at $25,000 monthly net income under NDAC § 75-02-04.1-10. At the cap, maximum monthly amounts are $3,500 for 1 child, $4,250 for 2 children, and $5,000 for 3 children. Courts may deviate above these caps under NDAC § 75-02-04.1-09 when the child's documented needs justify a higher amount, but such deviations require specific written findings.
What happens if I lose my job and cannot pay child support in North Dakota?
Job loss qualifies as a material change in circumstances justifying a modification motion under N.D.C.C. § 14-09-08.1, even if the current order is less than 1 year old. The obligor should immediately file a modification motion ($80 filing fee) or contact the North Dakota Child Support Division for an administrative review. Support is not automatically reduced upon job loss, and arrears continue to accrue at the original amount until a court issues a modified order. North Dakota courts may impute income if the job loss is deemed voluntary.
How is child support enforced in North Dakota?
North Dakota enforces child support through income withholding (the primary method, collecting approximately 70% of payments), federal and state tax refund intercepts (for arrears exceeding $500), license suspensions (driver's, professional, and recreational licenses for arrears over $5,000), passport denial (for arrears exceeding $2,500), credit bureau reporting, property liens, and contempt of court proceedings with penalties up to $5,000 in fines and 1 year imprisonment under N.D.C.C. § 14-09-08.1.
Do I need a lawyer to use the North Dakota child support calculator?
A lawyer is not required to use the child support calculator North Dakota provides through the Department of Health and Human Services. The calculator is a free, public tool that any parent can access at hhs.nd.gov. However, consulting a North Dakota family law attorney is recommended for cases involving deviation requests, imputed income disputes, self-employment income calculations, or equal residential responsibility adjustments, as these scenarios require legal analysis beyond the calculator's scope.
Reviewed by Antonio G. Jimenez, Esq. — Florida Bar No. 21022 | Covering North Dakota divorce law