North Carolina self-employment tax at a glance
North Carolina uses a flat income tax that has been cut almost every year since 2014 and is scheduled to keep falling. Combined with a sizeable standard deduction, it is one of the lighter-tax states on the East Coast.
- State income tax: a flat 3.99% income tax (top marginal rate 3.99%)
- Standard deduction / exemption: $12,750 single, $25,500 married filing jointly
- Estimated payments: Form NC-40
- Tax agency: North Carolina Department of Revenue
- Local income taxes: None for most residents
How North Carolina compares: take-home pay on 1099 income
The table compares a single filer with no business expenses in North Carolina with the average state income tax across the15 states we cover and with a state that has no income tax. Every column includes self-employment tax and federal income tax.
| Net profit | North Carolina state tax | Avg. state tax | Total tax | North Carolina take-home | No-income-tax state |
|---|---|---|---|---|---|
| $50,000 | $1,345 | $1,158 | $11,077 (22.2%) | $38,923 | $40,268 |
| $75,000 | $2,272 | $2,012 | $17,767 (23.7%) | $57,233 | $59,505 |
| $100,000 | $3,199 | $2,912 | $25,564 (25.6%) | $74,436 | $77,635 |
| $150,000 | $5,053 | $4,749 | $42,661 (28.4%) | $107,339 | $112,392 |
| $250,000 | $8,876 | $8,541 | $75,830 (30.3%) | $174,170 | $183,046 |
2026 North Carolina income tax brackets
| Single rate | Single taxable income | Married rate | Married filing jointly |
|---|---|---|---|
| 3.99% | Over $0 | 3.99% | Over $0 |
How this calculator works
- Net profit is your gross 1099 income minus deductible business expenses.
- Self-employment tax is 15.3% (12.4% Social Security up to the $184,500 wage base, plus 2.9% Medicare) on 92.35% of net profit.
- Federal income tax applies the 2026 brackets after subtracting half of your SE tax, the standard deduction and the 20% qualified business income (QBI) deduction.
- North Carolina tax applies North Carolina's brackets to your adjusted gross income after the state deduction or exemption.
- Quarterly payments divide the annual federal amount evenly.
Not included: credits, itemized deductions, retirement contributions (SEP-IRA, Solo 401(k)), self-employed health insurance deduction and local taxes. Each of these usually lowers the bill, so treat the result as a conservative upper estimate.