North Carolina Self-Employment Tax Calculator (2026)
Federal self-employment tax, federal income tax and North Carolina state income tax on 1099 income, plus the quarterly estimated payment to set aside.
- Total tax
- $17,105
- Effective rate
- 23.8%
- Per quarter
- $4,276
- After-tax income
- $54,895
| 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 | $2,302 |
| Total federal + state | $17,105 |
Estimated payments of $4,276 are due Apr 15, 2026, Jun 15, 2026, Sep 15, 2026, Jan 15, 2027. North Carolina 2026 rates are not yet published; state figures use 2025 rates.
How the 2026 numbers are calculated
- Net profit is your 1099 income minus deductible business expenses (Schedule C).
- Self-employment tax is 15.3% of 92.35% of net profit: 12.4% Social Security on the first $184,500 of combined wages and net earnings, plus 2.9% Medicare on all of it. An extra 0.9% Medicare tax applies above $200,000 ($250,000 married filing jointly).
- Adjusted gross income is net profit plus any W-2 wages, minus half of the self-employment tax.
- The standard deduction ($16,100 single, $32,200 married filing jointly, $24,150 head of household) and the 20% qualified business income deduction reduce taxable income. The QBI deduction starts phasing out above $201,750 of taxable income ($403,500 joint).
- Federal income tax is applied to what is left using the 2026 brackets for your filing status.
- The child tax credit ($2,200 per child under 17, $500 per other dependent) reduces income tax; up to $1,700 per child is refundable and can offset self-employment tax.
- The earned income credit for filers with children — up to $4,427 with one child, $7,316 with two, $8,231 with three or more — is fully refundable and phases out above $23,890 of income ($31,160 joint).
- North Carolina income tax: calculated under the state's own rules, described below.
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 (2025)
- North Carolina applies a flat 4.25% rate for 2025.
- Standard deduction: $12,750 single, $25,500 married filing jointly, $19,125 head of household.
- 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.
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's per-quarter figure combines federal and state so you can set aside one amount.
- Federal payment 1: April 15, 2026
- Federal payment 2: June 15, 2026
- Federal payment 3: September 15, 2026
- Federal payment 4: January 15, 2027
The calculator splits your total into four equal payments. To avoid an underpayment penalty you can instead pay 100% of last year's total tax (110% if your prior-year AGI was over $150,000) spread across the four dates.
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?
A single-member LLC taxed as a sole proprietorship pays exactly what this calculator shows. Electing S-corporation status changes the math (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
- IRS Rev. Proc. 2025-32 (2026 inflation adjustments, incorporating OBBBA changes)
- SSA 2026 COLA fact sheet — Social Security wage base
- 26 U.S.C. §199A as amended by Public Law 119-21 — QBI phase-in range widened to $75,000 / $150,000
- 26 U.S.C. §24 as amended by Public Law 119-21 — CTC $2,200, indexed from 2026
- IRS Form 1040-ES (2026) — estimated tax due dates
- IRS Rev. Proc. 2025-32 §4.06 — earned income credit amounts and §32(i) investment income limit
North Carolina figures for 2025: verified · last verified 2026-09-05 · 2026 figures not yet published by the state
- North Carolina Department of Revenue — 2025 Form D-401 instructions (rate p.5, standard deduction line 11, child deduction table p.13, line 6 = federal AGI)
- N.C.G.S. §105-153.7 (4.25% for 2025, 3.99% for taxable years after 2025), §105-153.5(a)(1) (standard deduction), §105-153.5(a1) (child deduction)