Self-Employment Tax Calculator

Estimate your 2024 self-employment tax liability and net business income.

Business Income

Enter your net business profit.

Net Profit ($)

Estimated for 2024 tax year.

Note: We use the 92.35% multiplier which accounts for the employer-portion deduction.

Estimated Self-Employment Tax

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Effective SE Rate---%

After-Tax Profit$---

Tax Split

Social Security

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12.4% rate

Medicare

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2.9% rate

Understanding the Self-Employment Tax Calculator

Being your own boss comes with many rewards, but it also brings unique tax responsibilities. Unlike traditional employees, self-employed individuals are responsible for both the employer and employee portions of Social Security and Medicare taxes. Our Self-Employment Tax Calculator helps you estimate this liability for the 2024 tax year, ensuring you can set aside the appropriate funds for your quarterly estimated payments.

Guide

How to use the Self-Employment Tax Calculator

1Determine your 'Net Business Profit' by subtracting all business expenses from your total revenue.
2Enter the Net Profit into the calculator.
3The tool automatically applies the 92.35% taxable portion rule common in US tax law.
4Review the Social Security and Medicare breakdown to understand your mandatory contributions.
5Use the 'Estimated SE Tax' result to guide your financial planning and quarterly tax savings.

Applications

Common Use Cases

Quarterly Tax Planning: Estimate how much you need to pay for 1040-ES vouchers.

Business Expense Evaluation: Calculate how a new business expense will reduce your final tax bill.

Career Transition: Compare a W-2 salary offer with your current freelance earnings after SE taxes.

Savings Goals: Determine your true usable net income after all business taxes are accounted for.

The Maths Behind the Calculation

SE Tax = (Net Profit × 0.9235) × 15.3%

First, your profit is multiplied by 0.9235 to find the amount subject to tax. Then, a 12.4% Social Security tax (up to the $168,600 limit) and a 2.9% Medicare tax are applied. The total 15.3% rate covers both halves of your payroll taxes.

Knowledge Base

Frequently Asked Questions

Why do I pay 15.3% instead of 7.65%?

Standard employees have 7.65% withheld from their pay, and their employer pays another matching 7.65%. If you are self-employed, you are both the employer and the employee, so you pay the full amount.

What is the income limit for Social Security tax?

For 2024, only the first $168,600 of your self-employment income is subject to the 12.4% Social Security tax.

Is SE tax the same as Income tax?

No. SE tax is in addition to federal and state income taxes. However, you can deduct 50% of your SE tax from your gross income when calculating your income tax.

Regional Notice: United States

"Federal tax estimates are based on 2024 brackets. Consult a tax professional for official filing."