Self-Employment Tax Calculator: SE Tax on Net Earnings
Work out the self-employment tax owed on net business earnings — the Social Security and Medicare tax that self-employed people pay in full, both the employee and employer halves.
Adjust the inputs and select Calculate for a full breakdown.
Compare Common Scenarios
How the numbers shift across typical situations for this calculator:
| Scenario | Self-employment tax | Net earnings after SE tax |
|---|---|---|
| 15.3% of $60,000 | 9,180 | 50,820 |
| 15.3% of $30,000 (side income) | 4,590 | 25,410 |
| 15.3% of $120,000 | 18,360 | 101,640 |
| 2.9% of $50,000 (above SS wage base) | 1,450 | 48,550 |
How This Calculator Works
Enter the SE tax rate (15.3% standard) and your net self-employment earnings. The calculator multiplies the two to give the SE tax and shows the earnings net of it. Self-employment tax is separate from and on top of federal and state income tax — budget for all three.
The Formula
Percentage of an Amount
Amount is the base value, Percentage is the rate applied to it
Worked Example
On $60,000 of net self-employment earnings at the 15.3% rate, SE tax is $9,180, leaving $50,820 before income tax. This is on top of federal and state income tax — which is why self-employed people typically set aside 25% to 35% of net earnings for total tax. The good news: half the SE tax ($4,590 here) is deductible above the line, reducing income-tax-able income.
Key Insight
Self-employment tax is the hidden cost of being your own boss. Employees pay 7.65% FICA and never see the employer's matching 7.65% — but the self-employed pay both halves, 15.3% total. On $60,000 of profit that's $9,180 before any income tax. Two mitigations: half the SE tax is deductible above the line, and an S-corp election can reduce SE tax by splitting income into a 'reasonable salary' (subject to FICA) and distributions (not subject to SE tax) — though it adds payroll and compliance cost. For profit above ~$80,000, the S-corp election often saves more than it costs.
15.3% SE tax: paying both halves of FICA yourself
When you're an employee, FICA payroll tax (15.3% combining Social Security 12.4% + Medicare 2.9%) is split: 7.65% withheld from your paycheck, employer pays the other 7.65% separately. When you're self-employed, YOU pay both halves on net business income — the 15.3% self-employment (SE) tax via Schedule SE filed with your annual tax return.
Two mitigations soften the bill. (1) Only 92.35% of net SE income is subject to SE tax — the 7.65% reduction matches what employees don't include in W-2 wages. So effective rate is 15.3% × 92.35% = 14.13%. (2) Half of the SE tax is deductible as an above-the-line adjustment on Form 1040 — reducing your income tax liability separately.
Worked example: $100,000 net self-employment income. SE tax = $100k × 92.35% × 15.3% = $14,130. Income tax deduction = $14,130 / 2 = $7,065. For someone in the 24% federal bracket: $7,065 × 24% = $1,696 tax savings. Effective SE tax: $14,130 - $1,696 = $12,434 (12.4% effective on the original $100k of SE income).
Quarterly estimated tax payments — and the safe harbor
Self-employed must pay taxes throughout the year, not just at filing. Quarterly estimated tax due dates (2026): April 15 (Q1), June 16 (Q2), September 15 (Q3), January 15, 2027 (Q4). Missing a quarterly deadline triggers an UNDERPAYMENT PENALTY — currently around 8% annualized (varies with Federal short-term rate).
Safe harbor rules (no penalty if you meet ANY of these): (1) Pay 100% of LAST YEAR'S total tax via quarterly payments (110% if last year's AGI was over $150k). (2) Pay 90% of current year's actual tax (only known retroactively). (3) Owe less than $1,000 when filing.
Practical strategy for first-year self-employed: use safe harbor (1) — pay 100-110% of previous year's tax in 4 equal installments. Even if your current year is higher, the safe harbor protects you from underpayment penalty. Bank the excess to cover the actual bill at filing. For volatile-income earners (commission, project-based), the safe harbor is the easier path than predicting current-year income.
S-corp election: reducing SE tax through reasonable salary
Sole proprietors pay SE tax on 100% of net income. S-corporation election allows a different split: pay yourself a REASONABLE SALARY (subject to payroll tax 15.3%), then distribute remaining profits as DISTRIBUTIONS (NOT subject to SE tax). The savings are substantial for higher earners.
Worked example: $200,000 of net business income. As sole prop: $200k × 14.13% effective SE tax = $28,260. As S-corp with $80k reasonable salary + $120k distributions: $80k × 15.3% = $12,240 payroll tax. Distributions: $0 SE tax. Total: $12,240. Savings: $16,020/year.
Caveats and trade-offs: (1) S-corp 'reasonable salary' must be defensible — IRS challenges salaries that seem artificially low (worst case: $0 salary, all distributions = reclassified, back tax + penalty). Industry comparables matter. (2) S-corp requires payroll setup, quarterly tax filings, annual corporate tax return — administrative costs $1,500-3,000/year. (3) Below ~$50,000 net income, the admin costs eat the SE tax savings. S-corp election typically pencils out above ~$60-80k net income; sole prop simpler below that threshold.
Effective SE tax burden by net income (2026)
SE tax on net self-employment income. Includes the 92.35% reduction and half-deduction benefit (assuming 24% federal bracket).
| Net SE income | Raw SE tax (14.13%) | Income tax deduction value | Net effective SE tax | Effective rate |
|---|---|---|---|---|
| $30,000 | $4,239 | $509 | $3,730 | 12.4% |
| $50,000 | $7,065 | $848 | $6,217 | 12.4% |
| $100,000 | $14,130 | $1,696 | $12,434 | 12.4% |
| $176,100 (SS cap) | $24,883 | $2,986 | $21,897 | 12.4% |
| $250,000 (above SS cap) | $28,432 (+ Medicare) | $3,412 | $25,020 | 10.0% |
Above the Social Security wage base ($176,100 in 2026), only the 2.9% Medicare portion applies — making higher-income self-employed effectively pay less SE tax as percentage of income. State income tax adds 0-13% beyond this. Plus 0.9% Additional Medicare tax above $200k single.
Frequently Asked Questions
How is self-employment tax calculated?
Multiply net self-employment earnings by 15.3% (12.4% Social Security + 2.9% Medicare). $60,000 of net earnings owes $9,180. Technically it applies to 92.35% of net earnings; the exact figure comes from Schedule SE.
Why is it 15.3% when employees pay 7.65%?
Employees pay 7.65% FICA and their employer matches another 7.65% (which the employee never sees). The self-employed are both employee and employer, so they pay both halves — 15.3% total. It's the structural tax cost of self-employment.
Is self-employment tax on top of income tax?
Yes — SE tax is separate from and additional to federal and state income tax. This is why the self-employed typically set aside 25% to 35% of net earnings: roughly 15.3% SE tax plus 10% to 24% income tax, before state. Quarterly estimated payments are usually required.
Is any of it deductible?
Yes — half the self-employment tax is deductible above the line (it reduces your adjusted gross income, lowering income tax). On $9,180 of SE tax, $4,590 is deductible. This partially offsets the burden of paying both FICA halves.
Can an S-corp reduce SE tax?
Yes, often substantially above ~$80,000 of profit. An S-corp election splits income into a 'reasonable salary' (subject to FICA) and distributions (NOT subject to SE tax). The savings can exceed the added payroll and compliance cost for higher-profit businesses — consult a CPA to model your specific situation.
References & Authoritative Sources
- IRS Schedule SE — Self-Employment Tax — Self-employment tax calculation and reporting · consulted May 31, 2026 · Tax authority — official SE tax calculation, 92.35% reduction, half-deduction
- IRS Form 1040-ES — Estimated Tax for Individuals — Quarterly estimated tax payment guide · consulted May 31, 2026 · Tax authority — quarterly due dates, safe harbor rules, underpayment penalty
- Internal Revenue Code — Section 1402 — Statutory basis for self-employment tax · consulted May 31, 2026 · Primary statute — net earnings from self-employment definition, SE tax framework
Related Calculators
Methodology & Review
Self-employment tax is 15.3% (12.4% Social Security + 2.9% Medicare) on net self-employment earnings. The Social Security portion applies only up to the annual wage base (~$168,600 in 2024); Medicare has no cap. Technically SE tax applies to 92.35% of net earnings, and half is deductible above the line — the calculator models the headline rate; consult Schedule SE for the exact figure.
Updated