Self-Employment Tax Calculator
SE tax, the deductible half and what to set aside quarterly.
Enter your values
Enter the net self-employment profit in $.
Enter the estimated income tax rate in %.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Self-employment tax
- $11,021.05
- Estimated income tax
- $13,048.11
- Total to set aside
- $24,069.15
- Quarterly payment
- $6,017.29
- Deductible half of SE tax
- $5,510.52
Quick answer
Self-employment tax is 15.3% on 92.35% of net profit — 12.4% Social Security plus 2.9% Medicare — and half of it is income-tax deductible.
SE tax = net profit × 0.9235 × 15.3%
At a glance
| What it does | SE tax, the deductible half and what to set aside quarterly. |
|---|---|
| Category | Finance |
| Inputs needed | Net self-employment profit, Estimated income tax rate |
| Main output | Self-employment tax |
| Formula | SE tax = net profit × 0.9235 × 15.3% |
| Cost | Free — no sign-up, no download |
How to use the Self-Employment Tax Calculator
- 1Enter your net profit after business expenses.
- 2Estimate your income tax rate.
- 3Read the quarterly amount to set aside.
Inputs explained
- Net self-employment profit($)
- Enter the net self-employment profit in $.
- Estimated income tax rate(%)
- Enter the estimated income tax rate in %.
Worked example
Using the values the calculator loads with:
Inputs
- Net self-employment profit78000 $
- Estimated income tax rate18 %
Results
- Self-employment tax$11,021.05
- Estimated income tax$13,048.11
- Total to set aside$24,069.15
- Quarterly payment$6,017.29
- Deductible half of SE tax$5,510.52
Frequently asked questions
Why 92.35%?
The law taxes net earnings from self-employment, defined as 92.35% of net profit, which mirrors the employer share exclusion for employees.
When are quarterly taxes due?
Generally 15 April, 15 June, 15 September and 15 January for the prior quarter's income.
What do I need to enter into the Self-Employment Tax Calculator?
Just 2 values: net self-employment profit, estimated income tax rate. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Self-Employment Tax Calculator work out the answer?
Self-employment tax is 15.3% on 92.35% of net profit — 12.4% Social Security plus 2.9% Medicare — and half of it is income-tax deductible. It applies the formula SE tax = net profit × 0.9235 × 15.3% and shows the working so you can check each step by hand.
Is the Self-Employment Tax Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.