Self-Employment Tax Calculator (Schedule SE)
Calculate the 15.
What this calculator does
The Self-Employment Tax Calculator (Schedule SE) estimates your result instantly from the values you enter, using standard taxes & income formulas. Calculate the 15. Calculations run in your browser, so nothing you type is sent to a server, and the output is an estimate for planning rather than financial advice.
About Self-Employment Tax Calculator (Schedule SE)
The Self-Employment Tax Calculator computes mandatory Schedule SE taxes (12.4% Social Security up to wage cap + 2.9% Medicare) on 92.35% of net freelance/business earnings, plus the 50% employer-equivalent tax deduction.
Formula & Mathematical Calculation
Taxable Self-Employment Earnings = Net Business Profit × 0.9235
Self-Employment Tax (15.3%) = ( Taxable Earnings up to Cap × 12.4% ) + ( Taxable Earnings × 2.9% )
Above-the-Line Tax Deduction = Self-Employment Tax × 0.50
Calculation Example
$60,000 Net Freelance Profit: Taxable Earnings ($55,410) × 15.3% = $8,477.73 Self-Employment Tax (Qualifies for $4,238.87 above-the-line deduction on Form 1040!).
Key Benefits
- Calculates 15.3% FICA self-employment tax (Social Security + Medicare)
- Applies IRS 92.35% net earnings multiplier
- Computes the 50% above-the-line income tax deduction
- Accounts for Social Security annual wage base cap
- 100% free tool for sole proprietors and LLCs
How to Use this Calculator
-
Enter Net Self-Employment / 1099 Profit
Input gross revenue minus allowable business expenses. -
Enter W-2 Wages from Other Jobs (if any)
Input W-2 wages to check Social Security wage cap overlap. -
Calculate SE Tax
Click Calculate to view self-employment tax liability and deduction.
Assumptions & Limitations
What the calculation assumes
- Every value you enter is treated as an exact, known amount.
- Rates and contributions are assumed to stay constant for the whole period unless the form asks for them separately.
- Results use standard financial formulas and ignore fees, penalties and promotional terms that are not entered above.
- Inflation, tax changes and market volatility are not modelled unless a field for them is provided.
- Amounts are unit-agnostic: results are returned in the same currency you enter.
What it does not cover
- Self-Employment Tax Calculator (Schedule SE) produces estimates for education and planning, not a quote, offer or professional advice.
- Real-world outcomes differ when fees, taxes, rounding rules or provider-specific terms apply.
- Local regulations and tax rules vary by country and change over time; verify current rules for your jurisdiction.
- Figures are only as accurate as the inputs you supply — check them before acting on the result.
- For decisions with lasting financial impact, confirm the numbers with a qualified professional.
Frequently Asked Questions
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