How it works
The calculator starts with your gross pay for one pay period, subtracts the pre-tax deductions you entered, and then works out each tax separately. Federal income tax follows the percentage method in IRS Publication 15-T (2026), Federal Income Tax Withholding Methods, using your W-4 entries. Social Security is 6.2% of wages up to $184,500 for the year (SSA; IRS Publication 15 (2026)). Medicare is 1.45% of all wages, plus Additional Medicare Tax of 0.9% on wages over $200,000 (IRS Publication 15 (2026)).
North Carolina income tax follows the withholding formula in North Carolina Department of Revenue, NC-30 (2026): your annual wages, less the North Carolina standard deduction for your NC-4 filing status ($12,750 for single filers) and any allowances, are taxed at the flat rate of 3.99%. North Carolina has no local income tax and no state disability or family leave deduction from employee pay.
Not included: 401(k) catch-up limits, garnishments, union dues, after-tax Roth contributions, tips, bonuses taxed as supplemental wages, and year-end credits or refunds. Your employer's payroll may round differently.
Worked example
Take a $60,000 salary paid biweekly, filing single on both the W-4 and the NC-4, with no other deductions. Gross pay is $2,307.69 per paycheck. Federal income tax withholding comes to $193.08, Social Security to $143.08 and Medicare to $33.46. North Carolina withholding at the flat rate is $74.00. Take-home pay is $1,864.07 per paycheck, or $48,465.82 over the year's 26 paychecks.
Frequently asked questions
Does North Carolina have a flat income tax?
Yes. For 2026 North Carolina applies one rate, 3.99%, to taxable wages at every income level (North Carolina Department of Revenue, NC-30 (2026)).
Do North Carolina cities or counties tax wages?
No. Charlotte, Raleigh and other North Carolina localities do not levy a local income tax, so a paycheck shows only federal, FICA and state tax lines.
What is the NC-4 and how is it different from the W-4?
Form NC-4 is North Carolina's employee withholding allowance certificate, and it sets state withholding the way the W-4 sets federal withholding. The calculator lets you enter NC-4 filing status and allowances separately from your W-4.
Is a 401(k) contribution pre-tax for North Carolina?
Yes. Traditional 401(k) contributions reduce the wages North Carolina taxes, the same way they reduce federal taxable wages.
How much is the North Carolina standard deduction in 2026?
It is $12,750 for a single filer and $12,750 for married filing jointly (North Carolina Department of Revenue, NC-30 (2026)).