How much is self-employment tax in West Virginia?

The self-employment tax itself is federal: 15.3% (12.4% Social Security + 2.9% Medicare) on 92.35% of your net earnings. West Virginia adds its 2.36%–5.12% state income tax on top of your net profit.

What is the 92.35% adjustment?

Self-employment tax is calculated on 92.35% of net earnings, not 100%, because that factor accounts for the employer-share deduction. So $50,000 net is taxed on $46,175 for SE tax purposes.

Can I deduct half of my SE tax in West Virginia?

Yes. Half of your federal self-employment tax is an above-the-line deduction that lowers your federal adjusted gross income, which flows into West Virginia's calculation since the state starts from federal AGI.

Is the Social Security portion capped?

Yes. The 12.4% Social Security portion applies only up to the annual wage base ($168,600 for 2024). The 2.9% Medicare portion has no cap, and high earners add a 0.9% surtax above $200,000.

Do I need to make quarterly payments in West Virginia?

Generally yes. Self-employed people usually owe estimated quarterly taxes to both the IRS and West Virginia if they expect to owe a few hundred dollars or more, to avoid underpayment penalties.

West Virginia Self-Employment Tax Calculator

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This calculator combines the federal self-employment tax with West Virginia’s state income tax so freelancers and contractors can estimate their total liability, including the deductible half-of-SE-tax adjustment.

How it works

Self-employment tax is federal and computed on 92.35 percent of your net earnings:

SE base   = net profit × 0.9235
SS part   = 12.4% of SE base (up to $168,600 wage base)
Medicare  = 2.9% of SE base (+0.9% surtax over $200,000)
SE tax    = SS part + Medicare part

Half of the SE tax is deductible, reducing the income that flows into West Virginia’s calculation. West Virginia then applies its graduated brackets (2.36% to 5.12%) on net profit less the half-SE deduction and your $2,000 per-person exemptions.

Example

On $50,000 net profit, the SE base is $46,175. SE tax is 15.3% of that, about $7,065. Half ($3,532) is deductible, leaving roughly $46,468 for West Virginia after one $2,000 exemption — about $1,460 in state tax. Total federal SE plus WV state tax is around $8,525.

Notes

This is an estimate, not tax advice. It models the SE tax and West Virginia state income tax but not federal income tax, the QBI deduction, or every credit. Confirm figures against Schedule SE and the West Virginia IT-140 instructions, and consider quarterly estimated payments to both the IRS and the WV Tax Division.