Does NC Have State Income Tax? Flat Rate and Filing Rules

Yes, North Carolina has a state income tax. For the 2026 tax year it is a flat 3.99 percent on taxable income, meaning every resident pays the same rate regardless of how much they earn. Before that rate applies, you subtract a standard deduction (or limited itemized deductions) and any exemptions you qualify for, such as the per-child deduction or exclusions for Social Security, military retirement, and certain government pensions.

The Flat Rate and How It Has Changed

North Carolina does not use graduated brackets. A single flat rate applies to taxable income for individuals, and for tax years beginning after 2025 that rate is 3.99 percent.¹ Someone with $40,000 in taxable income pays the same percentage as someone with $400,000.

The rate has been dropping. It was 4.99 percent in 2022, 4.75 percent in 2023, 4.50 percent in 2024, and 4.25 percent in 2025 before reaching 3.99 percent.¹ Further reductions may take effect beginning in 2027 if certain revenue triggers set by the General Assembly are met.²

Standard Deduction

Before the 3.99 percent rate hits anything, you subtract either the North Carolina standard deduction or the state’s narrower itemized deductions. Standard deduction amounts for 2026 by filing status:

Married filing jointly or surviving spouse: $25,500
Head of household: $19,125
Single: $12,750
Married filing separately: $12,750, but $0 if your spouse itemizes

These figures have been unchanged since 2022.³ Unlike some states, North Carolina adds nothing extra for taxpayers who are 65 or older or blind. And if you are not eligible for the federal standard deduction, your North Carolina standard deduction is zero.⁴

If You Itemize Instead

North Carolina itemized deductions are more restricted than federal ones; you cannot simply copy your Schedule A. The only items allowed on the state return are:

Mortgage interest and real estate taxes combined, capped at $20,000
Charitable contributions, matching the federal amount
Medical and dental expenses, matching the federal amount
Claim of right repayments, if not already deducted in arriving at AGI

For most filers the standard deduction wins. The comparison matters when you have large charitable giving or heavy medical costs.⁴

Child Deduction

Parents can take a per-child deduction, which reduces the income the 3.99 percent rate applies to rather than reducing the tax bill dollar for dollar. The amount depends on filing status and adjusted gross income. For married couples filing jointly or surviving spouses:

AGI up to $40,000: $3,000 per child
$40,001 to $60,000: $2,500
$60,001 to $80,000: $2,000
$80,001 to $100,000: $1,500
$100,001 to $120,000: $1,000
$120,001 to $140,000: $500
Over $140,000: $0

For head-of-household filers the deduction phases out above $105,000 AGI; for single and married-filing-separately filers it phases out above $70,000. You qualify only for children you also claim for the federal child tax credit.⁵

Income North Carolina Does Not Tax

Several categories of income are excluded from state taxable income entirely.

Social Security benefits are fully exempt no matter how much you receive.³

Bailey settlement retirement benefits. Government retirees who were vested in a qualifying retirement plan as of August 12, 1989, can exclude those retirement benefits entirely. Qualifying plans include the North Carolina Teachers’ and State Employees’ Retirement System, the Local Governmental Employees’ Retirement System, the Federal Employees’ Retirement System, and the U.S. Civil Service Retirement System, among others. For defined benefit plans, vesting required at least five years of creditable service by that date. Survivors drawing from a qualifying retiree’s plan also qualify.⁶

Military retirement pay. Retired members of the U.S. Armed Forces can deduct military retirement pay if they served at least 20 years or were medically retired. Survivor Benefit Plan payments to eligible survivors are also covered. Severance pay received on separation is not. Members of the commissioned corps of NOAA or the U.S. Public Health Service who meet the same service requirements also qualify.⁷

Credit for Taxes Paid to Another State

If you are a North Carolina resident with income earned in another state or country and you paid income tax there, you can claim a credit so the same income is not taxed twice. The credit equals the lesser of the tax actually paid to the other jurisdiction or the North Carolina tax attributable to that income.⁸ You must attach a copy of the other return along with proof of payment, and if more than one jurisdiction is involved, each needs a separate calculation. Local taxes paid to a city or county do not qualify; only state-level and national taxes count.⁹

Who Has to File

Whether you must file depends on residency and gross income.

Full-year residents must file when gross income exceeds the standard deduction for their filing status ($12,750 single, $25,500 married filing jointly, and so on).
Nonresidents must file if they received income from North Carolina sources (such as a business operated in the state, rental property located here, or gambling winnings from the state) and their total gross income from all sources exceeds the applicable standard deduction amount.
Part-year residents follow the same thresholds. Income earned while living in North Carolina plus any North Carolina-source income earned after moving away is subject to tax.¹⁰

Deadlines and Extensions

Form D-400, the individual return for the 2025 tax year, is due on or before April 15, 2026. When that date falls on a weekend or holiday, the deadline moves to the next business day. File on time even if you cannot pay in full, because the late-filing penalty is separate from and much larger than the late-payment penalty.¹¹

Need more time? Form D-410 gives you a six-month extension to October 15.¹² If you already have an automatic federal extension you do not have to file Form D-410, unless you owe state tax, in which case use the form to send the payment. An extension buys time to file, not to pay. Interest runs on any unpaid balance from the original due date. Taxpayers outside the country on the original due date get an automatic four-month extension by checking the appropriate box on Form D-400, though interest still accrues.

Estimated Tax Payments

You are required to make quarterly estimated payments if you expect to owe $1,000 or more after withholding and credits.¹³ This commonly reaches self-employed workers, freelancers, landlords, and anyone with meaningful income not covered by employer withholding. The four due dates:

First quarter: April 15
Second quarter: June 15
Third quarter: September 15
Fourth quarter: January 15 of the following year

Weekends and holidays push a due date to the next business day. You can skip the January 15 payment if you file the return and pay the full balance by January 31.¹⁴

Penalties and Interest

North Carolina charges separate penalties for filing late and for paying late.

Late filing: 5 percent of the unpaid tax per month or partial month, up to 25 percent total.
Late payment: a flat 5 percent of the unpaid tax if you file on time but do not pay in full.
Negligence: 10 percent of any deficiency from a careless failure to follow the rules, without intent to defraud.
Fraud: 50 percent of the total deficiency if the underpayment was intentional.¹⁵

Interest runs on any unpaid balance from the original due date. For January through June 2026 the rate is 7 percent annually.¹⁶ The gap between the late-filing and late-payment penalties is the reason to always file by the deadline, even when the money is not there yet.

1
North Carolina General Assembly. North Carolina General Statutes 105-153.7 – Individual Income Tax Imposed
2
NCDOR. Tax Rate Schedules
3
North Carolina General Assembly. North Carolina General Statutes 105-153.5 – Modifications to Adjusted Gross Income
4
NCDOR. North Carolina Standard Deduction or North Carolina Itemized Deductions
5
NCDOR. North Carolina Child Deduction
6
NCDOR. Bailey Decision Concerning Federal, State and Local Retirement Benefits
7
NCDOR. Important Notice – North Carolina Enacts New Deduction for Certain Military Retirement Pay and Survivor Benefit Plan Payments
8
North Carolina General Assembly. North Carolina General Statutes 105-153.9 – Tax Credits for Income Taxes Paid to Other States by Individuals
9
NCDOR. Credit for Income Tax Paid to Another State or Country
10
North Carolina General Assembly. North Carolina General Statutes 105-153.8 – Income Tax Returns
11
NCDOR. When, Where, and How to File Your North Carolina Return
12
NCDOR. Frequently Asked Questions About Filing an Application for Extension to File Your NC Individual Income Tax
13
NCDOR. Estimated Income Tax
14
N.C. Department of Revenue. Individual Estimated Income Tax NC-40 Instructions
15
North Carolina General Assembly. North Carolina General Statutes 105-236 – Penalties
16
NCDOR. Interest Rate Memo for January 1, 2026 Through June 30, 2026