How much is self-employment tax?

Federal self-employment tax is 15.3% — 12.4% for Social Security up to the annual wage base plus 2.9% for Medicare with no cap. It applies to 92.35% of your net self-employment earnings, which accounts for the employer-equivalent deduction.

Why is only 92.35% of my income taxed for SE tax?

The IRS lets you reduce net earnings by 7.65% before applying SE tax, mirroring the employer share of FICA that a regular employee would not pay on. So SE tax is figured on 92.35% of net profit.

Can I deduct part of my SE tax?

Yes. You deduct one-half of your self-employment tax as an above-the-line adjustment to income. This calculator subtracts that half before applying North Dakota's income tax to lower your state base.

Does North Dakota tax self-employment income?

Yes, but lightly. North Dakota income tax applies to your net self-employment income (after the half-SE-tax deduction) at the state's low brackets, with a top rate near 2.5% and a 0% bottom bracket.

Do I need to pay quarterly?

Usually. Self-employed people generally owe quarterly estimated taxes to the IRS and the State of North Dakota to avoid underpayment penalties. Divide your annual combined tax by four for a rough quarterly figure.

North Dakota Self-Employment Tax Calculator

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The North Dakota self-employment tax calculator estimates the two taxes every freelancer and contractor faces: the federal self-employment (SE) tax and North Dakota’s low-rate state income tax. It also applies the deductible half of SE tax so your state base is correct.

How it works

The calculation runs federal SE tax first, then North Dakota income tax on the reduced base:

SE base       = net profit x 0.9235
SE tax        = SE base x 15.3%  (12.4% SS up to wage base + 2.9% Medicare)
half SE tax   = SE tax / 2  (deductible)
state base    = net profit - half SE tax - standard deduction
ND income tax = ND brackets applied to state base
total tax     = SE tax + ND income tax

The 92.35% factor removes the employer-equivalent share, and the half-SE-tax deduction lowers the income on which North Dakota’s brackets apply.

Worked example

A single freelancer with $80,000 net profit:

SE base: 80,000 x 0.9235 = $73,880
SE tax: 73,880 x 15.3% = $11,303.64
Half SE tax deduction: $5,651.82
State base: 80,000 - 5,651.82 - 14,600 ≈ $59,748
North Dakota income tax ≈ $293 (very low rates).

Tips and notes

SE tax dwarfs state tax. In North Dakota the federal SE tax is by far the larger number — plan cash flow around the 15.3%.
Pay quarterly. Split your combined annual tax into four estimated payments to avoid penalties.
Wage base caps Social Security. The 12.4% Social Security portion stops once earnings pass the annual wage base; Medicare’s 2.9% has no cap.