How Child Support Works with Custody in North Carolina

In North Carolina, your custody schedule directly determines how much child support is owed and to whom. The connection point is the overnight count — specifically, whether each parent crosses the 123-overnight threshold. Understanding this link prevents surprises when you finalize your parenting plan.

The 123-Overnight Threshold

North Carolina's child support guidelines use the number of overnights each parent has per year to determine which calculation worksheet applies:

Fewer than 123 overnights with one parent → that parent is the non-custodial parent, and Worksheet A applies (primary custody calculation).

123 or more overnights with each parent → Worksheet B applies (shared/joint custody calculation).

Multiple children split between parents (each parent has primary custody of at least one child) → Worksheet C applies (split custody calculation).

This is not a soft guideline. The worksheet selection is determined by your actual custody schedule, and each worksheet produces a meaningfully different support amount.

Worksheet A: Primary Custody

When one parent has the child for at least 243 overnights (the other has fewer than 123), Worksheet A (Form AOC-CV-627) applies.

The calculation combines both parents' gross monthly incomes to find the base support obligation from the state schedule. Each parent's share is proportional to their income. The non-custodial parent pays their share directly to the custodial parent as a monthly transfer.

Adjustments are added for work-related childcare costs, health insurance premiums for the child, and extraordinary expenses (uninsured medical costs over $250/year per child, private school tuition, long-distance travel for visitation).

Worksheet B: Shared Custody

When each parent has 123 or more overnights, Worksheet B (Form AOC-CV-628) applies. This formula recognizes that both parents maintain active households for the child.

The key difference: the base support obligation is multiplied by 1.5 to account for the duplicated household costs. Then each parent's share is calculated based on both income percentage and overnight percentage.

The result is typically a lower net payment than Worksheet A. But the higher-earning parent almost always still pays something, even in a perfectly equal 50/50 schedule. Equal parenting time does not mean zero support — it means the income disparity determines the transfer amount.

What Counts as Income

North Carolina defines gross income broadly. It includes:

• Salary, wages, commissions, bonuses, and overtime
• Self-employment income (after legitimate business expenses)
• Severance pay and pensions
• Trust income, interest, dividends, and capital gains
• Social Security benefits, workers' compensation, and disability payments

It excludes public assistance (TANF, SSI) and child support received for other children.

If a parent is voluntarily unemployed or underemployed to reduce their support obligation, the court can impute income based on their work history, qualifications, and local wage rates.

Cost Adjustments Beyond the Base

Three categories of additional costs are shared between parents proportional to their income:

Work-related childcare — daycare, after-school care, and summer camp costs incurred because of a parent's employment.

Health insurance premiums — the child's portion of the health insurance premium paid by either parent. If the policy covers multiple family members, the child's share is calculated by dividing the total premium by the number of covered individuals.

Extraordinary expenses — uninsured medical and dental costs exceeding $250 per child per year (orthodontia, therapy, chronic condition management), specialized educational expenses, and visitation travel costs for long-distance arrangements.

The parent who pays these costs out of pocket receives a credit on the worksheet.

The Income Cap

The North Carolina child support guidelines apply as a rebuttable presumption when the parents' combined gross monthly income is $40,000 or less ($480,000/year). Above that cap, the formula does not apply. Instead, the judge sets support on a case-by-case basis, evaluating the child's reasonable needs and the family's accustomed standard of living.

The Self-Support Reserve

To protect low-income parents, the guidelines include a self-support reserve set at $1,133 of monthly gross income (based on the federal poverty level). For parents earning less than $1,150/month, the minimum support obligation is $50/month.

Why This Matters for Your Parenting Plan

Every overnight you add or subtract from your custody schedule can shift the worksheet calculation. A schedule that puts one parent at 120 overnights uses Worksheet A. Moving to 125 overnights triggers Worksheet B and changes the support amount.

This is not a reason to design your schedule around child support — judges can and do reject arrangements they believe are engineered for financial advantage. But it is a reason to count your overnights carefully and understand the financial implications of the schedule you propose.

The North Carolina Child Custody & Parenting Plan Guide includes a child support overnight calculator worksheet that helps you track overnight counts for your proposed schedule and organize the financial documents you need for the child support calculation.

See more North Carolina guides →