North Carolina Self-Employment Tax Calculator (2026)
Federal self-employment tax, federal income tax and North Carolina state income tax on 1099 income, plus how much to set aside for each estimated payment.
Federal 2026 and North Carolina 2026 data checked against the official publications, last on 2026-09-05 Runs in your browser — nothing you type is sent anywhere, not even when you reload or share the link No sign-up Methodology and data status
- Total tax
- $16,964
- Effective rate
- 23.6%
- Set aside per quarter
- $4,241
- After-tax income
- $55,036
| Breakdown | |
|---|---|
| Net profit (income − expenses) | $72,000 |
| Self-employment tax | $10,173 |
| Social Security (12.4%) | $8,245 |
| Medicare (2.9%) | $1,928 |
| Federal income tax | $4,630 |
| Adjusted gross income | $66,913 |
| Standard deduction | −$16,100 |
| Qualified business income deduction (20%) | −$10,163 |
| Taxable income · marginal rate 12.0% | $40,651 |
| North Carolina income tax | $2,161 |
| Total federal + state | $16,964 |
Amounts to set aside, not bills: federal $3,701 for each Form 1040-ES installment (Apr 15, Jun 15, Sep 15, Jan 15). North Carolina: $540 per installment on its own schedule. For the safe-harbor amount and payments you have already made, use the quarterly calculator with these inputs.
North Carolina and self-employment income
North Carolina has a flat income tax that is stepping down each year: 4.25% for 2025 and 3.99% for 2026. The standard deduction is $12,750 single / $25,500 joint, and a child deduction of up to $3,000 per child steps down by $500 for every $10,000 of income (single) above $20,000, reaching zero at $70,000 ($140,000 joint).
North Carolina rules used by this calculator (2026)
- North Carolina applies a flat 3.99% rate for 2026.
- Standard deduction: $12,750 single, $25,500 married filing jointly, $19,125 head of household — below the federal $16,100 single / $32,200 joint for 2026.
- The per-child under 17 deduction steps down as income rises.
- North Carolina starts from federal AGI, so the deductible half of self-employment tax reduces state income as well.
What a North Carolina freelancer may still owe
- North Carolina requires estimated payments (Form NC-40) when you expect to owe $1,000 or more.
- Some counties and cities levy privilege license taxes on specific professions; there is no local income tax.
What North Carolina costs at three levels of profit (2026)
A single filer with no dependents and no other income, taking the standard deduction. The state column is North Carolina's own tax after its deductions, exemptions and credits.
| Net profit | Federal | North Carolina | Total | Effective rate |
|---|---|---|---|---|
| $50,000 | $9,732 | $1,345 | $11,077 | 22.15% |
| $75,000 | $15,495 | $2,272 | $17,767 | 23.69% |
| $100,000 | $22,365 | $3,199 | $25,564 | 25.56% |
At $75,000 of profit, North Carolina takes $2,272 — 12.79% of the total tax bill. Change any input in the calculator above to see your own figures.
How the federal part is worked out
Net profit is 1099 income less business expenses (Schedule C). Self-employment tax is 15.3% of 92.35% of that profit — 12.4% Social Security up to $184,500 of combined wages and earnings, 2.9% Medicare on all of it. Half of that tax, the $16,100 standard deduction ($32,200 joint) and the 20% qualified business income deduction come off before the 2026 brackets are applied; the child tax credit and the earned income credit then reduce what is left, and the refundable parts can offset self-employment tax. The methodology page sets out the full sequence and every rule the calculator leaves out, including how North Carolina's figures are derived.
Quarterly estimated tax deadlines (2026)
If you expect to owe $1,000 or more of federal tax for the year, the IRS expects four estimated payments (Form 1040-ES). North Carolina runs its own estimated-payment schedule with its own threshold (see above); the calculator shows the federal installment and the North Carolina installment separately, and one combined amount to set aside each quarter.
The 2026 dates are April 15, 2026, June 15, 2026, September 15, 2026, January 15, 2027. The federal amount is split into four equal Form 1040-ES installments after any withholding you entered; paying 100% of last year's tax instead (110% above $150,000 of prior-year AGI) also avoids the penalty. The quarterly calculator works that out and subtracts what you have already paid, and the guide to the due dates explains the rule.
Common questions
Does North Carolina tax self-employment income differently from wages?
For state income tax, net profit from self-employment is ordinary income like wages. The self-employment tax itself is federal only; North Carolina does not add a state equivalent.
Is half of self-employment tax really deductible?
Yes, for federal tax. The employer-equivalent half is an adjustment to income on Schedule 1, which lowers your AGI and therefore your federal income tax. It does not reduce the self-employment tax itself.
Does an LLC change these numbers?
For federal income tax and self-employment tax, a single-member LLC taxed as a sole proprietorship follows exactly the calculation shown here. State and local obligations can still differ: an LLC may be a taxable entity for a state's franchise, gross-receipts or excise tax, and may owe registration or licence fees a sole proprietor does not — North Carolina's are listed above. Electing S-corporation status changes the federal arithmetic too (salary plus distributions) and is outside this tool's scope.
What if I moved to North Carolina during the year?
Income earned while you were a resident of another state is taxable there under that state's rules. This calculator assumes all income was earned as a North Carolina resident.
Data sources and status
Federal figures for 2026: verified · last verified 2026-09-05 · the revenue procedures and forms they were read from, with every other data set
North Carolina figures for 2026: verified · last verified 2026-09-08
- North Carolina Department of Revenue : Tax Rate Schedules page: 'For Taxable Years after 2025, the North Carolina individual income tax rate is 3.99% (0.0399)'; further trigger-based cuts apply to 2027 and later only
- N.C.G.S. §105-153.7 (rate table : 2025 4.25%, after 2025 3.99%; trigger mechanism for later years, S.L. 2023-134 s.42.1(a)), §105-153.5(a)(1) (standard deduction $12,750 / $25,500 / $19,125, unchanged through S.L. 2026-11) and §105-153.5(a1) (child deduction table, unchanged), read at ncleg.gov on 2026-09-07
- North Carolina Department of Revenue : 2025 Form D-400 and D-400TC: no earned income or child credit; the child deduction on line 10 is already modeled
North Carolina Department of Revenue · How figures are checked · Corrections log
Other states
Paying as you go? The quarterly estimated tax calculator applies the federal safe harbor and subtracts what you have already paid.