Self Employment Tax Calculator
Enter net business income, filing status, home state, other household income, and a deduction. The calculator applies the 92.35 percent net earnings factor, the Social Security wage base, Medicare tax, and the additional Medicare threshold, then shows the federal and supported state income tax beside it.
Estimate federal, state, and entity tax
The calculator uses federal figures for the selected year and the confirmed state rule shown in the result. Every tax component stays visible so you can follow the estimate.
This entity treatment does not use owner W-2 wages.
| Gross household income in the estimate | $0 |
| Standard deduction | -$16,100 |
| Federal taxable income | $0 |
| State income tax estimate | $0 |
| Estimated total tax | $0 |
| Effective rate | 0% |
Method notes
Tennessee has no state income tax on earned income. The Hall income tax was repealed beginning in 2021.
The estimate applies the 20 percent deduction below the threshold, includes the 2026 minimum deduction when qualified business income is at least $1,000, then phases the calculated deduction across the published range. Actual limits depend on material participation, business type, wages, property, and other facts.
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Use the result with current books
Use this result with the bookkeeping by industry guides and software comparisons that fit your business. GlacialBooks features explain how the underlying records stay current, and current pricing shows the path from a free tool into the product.
How self employment tax is built
The estimate applies the Social Security and Medicare portions to net earnings from self employment, with the Social Security portion limited by the 2026 wage base. It also applies additional Medicare tax above the filing status threshold and shows the deductible half of regular self employment tax.
What the estimate leaves out
The result does not include credits, alternative minimum tax, net investment income tax, every state adjustment, local income tax, retirement contributions, health insurance deductions, losses, basis limits, or every qualified business income limitation. Those omissions are shown near the result rather than hidden.
Data that can be audited
Federal brackets, deductions, Social Security wage base, Medicare thresholds, qualified business income thresholds, and corporation rates live in a versioned file with official sources and review dates. State rules live in a separate versioned file, and an unavailable state is excluded instead of filled with a guessed rate.
Frequently asked questions
Is the lowest entity total always the best choice?
No. Entity choice also affects legal administration, payroll, benefits, financing, state filings, reasonable compensation, and how money moves to owners.
How does the S corporation view treat salary?
The entered owner wage carries combined payroll tax. Remaining business income is shown as a distribution that does not carry self employment tax in this planning model.
Is the qualified business income deduction always 20 percent?
No. The deduction is subject to taxable income, business type, wage and property limits, and published phaseout ranges. This estimator shows its planning method and can be lower than 20 percent.
Sources
Reviewed 2026-07-18.
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