Self-Employment Tax, Worked Through on $60,000 of Profit
On $60,000 of profit, self-employment tax comes to about $8,478. Half of that, about $4,239, then comes off your income before income tax is worked out.
It is charged on profit, not on everything you were paid. And it is separate from income tax, which is the part that catches people in their first year.
Here is the calculation one line at a time, then the same sum on other amounts so you can find your own.
The Profit and Loss report, where the profit figure comes from. Example data.
The short version
Self-employment tax is 15.3% of 92.35% of your net profit.
That works out at about 14.1% of profit at these income levels.
Half of it is deductible when you work out your adjusted gross income.
It is on top of income tax, not instead of it.
What is self-employment tax?
It is how people who work for themselves pay into Social Security and Medicare. An employee sees those two taxes taken from every paycheck, and the employer pays a matching amount on top. When you are self-employed there is no employer, so you pay both halves.
That is why the rate looks high the first time you meet it. It is not an extra tax for being self-employed. It is the same contribution, with nobody else paying half.
The calculation, in four lines
Step | What you do | Amount |
|---|---|---|
1 | Start with your net profit for the year | $60,000.00 |
2 | Multiply by 92.35% | $55,410.00 |
3 | Multiply by 15.3% | $8,477.73 |
4 | Half is deductible | $4,238.87 |
Step 1 is profit: what came in, minus what it cost to run the business.
Step 2 trims that to 92.35% of itself. In the IRS's words, "the amount subject to self-employment tax is 92.35% of your net earnings from self-employment."
Step 3 applies the rate. The 15.3% is two taxes together: 12.4% for Social Security and 2.9% for Medicare. On this example that is $6,870.84 and $1,606.89.
Step 4 is the one people miss. You can deduct one-half of your self-employment tax when you work out your adjusted gross income. It does not make the self-employment tax smaller. It makes the income your income tax is charged on smaller.
Where the $60,000 comes from
From your profit and loss: income minus business expenses. Not your deposits, and not your revenue.
This is the most common way the sum goes wrong. Someone who was paid $95,000 and spent $35,000 running the business owes this tax on $60,000, not on $95,000. Working from the bigger number overstates the bill by more than half.
It is also why the monthly labelling matters. Every business expense you record lowers the profit this tax is charged on. An expense you forgot to record is one you pay 15.3% on for no reason.
Your number, at a glance
Net profit | Self-employment tax | Set aside each month |
|---|---|---|
$30,000 | $4,238.87 | about $353 |
$45,000 | $6,358.30 | about $530 |
$60,000 | $8,477.73 | about $706 |
$75,000 | $10,597.16 | about $883 |
$90,000 | $12,716.60 | about $1,060 |
There is a shortcut hiding in that table. Because 92.35% of 15.3% is about 14.1%, self-employment tax at these levels is about 14.1% of your profit. If your profit so far this year is $20,000, the self-employment tax on it is about $2,826.
Profit to date on the dashboard, the figure the shortcut starts from. Example data.
Who has to pay it
You usually must pay self-employment tax once your net earnings from self-employment reach $400 for the year. That is a low bar, and it catches side income as well as a full-time business.
There is a yearly limit on how much of your earnings the Social Security part applies to. It changes each year and sits well above every figure in the table.
The three most common mistakes
Working from deposits. The tax is on profit. Start from what was left after business expenses, never from what arrived in the account.
Forgetting the deduction. Half of the self-employment tax comes off your income before income tax. Skip that line and you pay income tax on money the rules let you take off.
Treating it as the whole bill. Setting aside 15% and feeling finished is the classic first-year surprise. This tax is one part. Income tax is the other.
None of these is a sign of being bad with money. They come from the sum never having been shown one line at a time.
Month by month
Take a year where profit arrives unevenly: $3,000 in a slow month, $8,000 in a strong one. At about 14.1%, the slow month sets aside about $424 and the strong month about $1,130.
You are not trying to guess the year in January. You are putting away the right share of each month as it happens, so the total is right however the year turns out. For the full set-aside, with income tax included, see our post on how to set your tax set-aside percentage.
Work it out on your own numbers, free
The calculation is four lines. The hard part is line one, your profit to date. La Soglia, the free membership of the Money Mastery System, holds what you own and what you owe in one place, with no bank connection and no card. The paid membership is what turns a year of transactions into the profit figure without adding up statements by hand.
Bring it to the Collective
Whether to keep the set-aside in its own account, and how much, is a good question for the discussion feed. The Money Mastery Collective is open on the free membership.
Questions we hear
Is self-employment tax the same as income tax?
No. Self-employment tax is Social Security and Medicare, worked out on your profit. Income tax is worked out afterwards, on your income after deductions.
Do I pay it if I also have a job?
Yes, on the profit from your own work. An employer withholding from your paycheck does not cover what you earn for yourself.
Can I lower it?
Only by lowering profit honestly. It is charged on profit, so every business expense you record and can evidence reduces it.
When is it paid?
Through the year in estimated payments, then settled on your return. Nobody withholds it for you.
References
The 15.3% rate and its two parts, the 92.35% figure, the $400 threshold and the deduction for one-half are from IRS Tax Topic 554, Self-Employment Tax, updated 24 September 2026, and the IRS Schedule SE instructions. The dollar figures are our own worked examples from those rules.
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A note on what this is
This article is educational. The Money Mastery System is an educational tool, not financial software, and nothing here is legal, tax, investment or financial advice. The figures are worked examples, not a calculation of your own tax, and tax rules change and depend on your whole situation. For guidance on your own circumstances, please speak with a qualified professional who knows them.
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