Credits and breaks for North Carolina families: the child deduction, and not much else

A family used to the federal return, where the earned income credit and the child tax credit can turn a zero tax bill into a four-figure refund, should know going in that the North Carolina return does nothing of the kind. The state repealed its earned income credit after 2013 and its child and dependent care credit after 2014, and it never had an education credit or a 529 deduction. Nothing on Form D-400 is refundable. The whole family package is two deductions: the standard deduction, $25,500 joint or $19,125 head of household, and a child deduction of $3,000 to $500 for each child who qualifies for the federal child tax credit, with the amount falling as income rises. At 3.99% the child deduction is worth between $120 and $20 of tax per child. A family whose income is below the standard deduction owes North Carolina nothing and gets nothing back; a family above it pays 3.99% on the excess after the child deduction. That is the entire system.

The useful corollary is that the only way to lower North Carolina tax is to lower federal adjusted gross income or to itemize for the state. Pre-tax 401(k) and 403(b) contributions, a health savings account, a dependent care flexible spending account at work, and the above-the-line student loan interest deduction all reduce AGI and so reduce state tax at 3.99%. The federal child care credit, the education credits and the child tax credit do not.

The child deduction

Line 10 of the D-400 takes a deduction for each child for whom you are allowed the federal child tax credit under IRC section 24. That means the federal tests apply: under 17 at the end of the year, your dependent, with a Social Security number. A 17-year-old high school senior does not qualify, and neither does a college student, though both may still be federal dependents. The amount depends on filing status and federal AGI. These are the 2025 figures set in G.S. 105-153.5(a1); the statute carries them unchanged into 2026, and the 2026 instructions post in January 2027.

The steps are cliffs, not slopes: a joint family with two children at $40,001 of AGI deducts $1,000 less than one at $40,000, which costs $40 of tax on the one extra dollar. The amounts are small enough that this is a curiosity rather than a planning problem. Note that the head-of-household steps come at lower incomes than the joint steps, so a single parent earning $50,000 deducts $2,000 per child while a couple earning the same deducts $2,500.

What there is not

The federal credits are covered in The earned income credit, The child tax credit and The dependent care credit. None of them change the state return by a dollar.

Child care

The federal credit for child and dependent care is a credit against federal tax and nothing else. North Carolina repealed its own version in 2014 and has not replaced it. The one state-relevant move is the dependent care flexible spending account many employers offer: up to $7,500 a year for 2026 comes out of wages before tax, which lowers the W-2 and therefore federal AGI and therefore North Carolina taxable income. A family that runs $5,000 of day care through an FSA saves about $200 of state tax that the federal credit alone would never have saved. The two cannot be used on the same dollars, so the choice between the FSA and the federal credit should count the 3.99%.

School and college

North Carolina gives no deduction or credit for contributions to the NC 529 Plan, which puts it in the minority of states with an income tax and its own plan. The plan is still worth using: earnings grow untaxed and qualified withdrawals are not in federal AGI, so they never reach the state return. Because North Carolina now conforms to the Internal Revenue Code as of July 5, 2025, the 2025 federal changes to what a 529 can pay for, including the larger allowance for K-12 tuition, apply here as well. A withdrawal that is not qualified federally is taxed federally with a penalty and added back on Schedule S. Opportunity Scholarship grants and other state school-choice programs are not tax items. Deposits to a Personal Education Student Account for a child with a disability are deductible on Schedule S to the extent they are in federal AGI (verify), a narrow provision few families use.

For college, the American opportunity and lifetime learning credits are federal only. The one piece that reaches the state is the student loan interest deduction, up to $2,500 a year, because it is taken above the line; it lowers state tax by up to $100. Student loans forgiven under the public service program or on death or disability stay exempt in North Carolina; other forgiveness that was excluded federally under the 2021–2025 rule was added back on Schedule S, and how that line reads for 2026 is not yet settled (verify). See Education credits and Forgiven debt.

Filing status and marriage

The North Carolina filing status must match the federal one. Head of household gets a $19,125 standard deduction against $12,750 for single, so the status is worth $254 of state tax on top of its federal value; the rules for claiming it are federal and are in Head of household. A married couple who file jointly federally must file jointly here if both are North Carolina residents or both have North Carolina income. There is no marriage penalty in the rate, since the rate is flat, and the joint standard deduction is exactly twice the single one; the only place marriage changes the arithmetic is the child deduction table, where the joint steps are more generous than the head-of-household steps at the same income.