Have you recently started freelancing, driving for Uber, selling online, or running your own small business?
If yes, you’ve probably heard about self-employment tax. The name sounds a bit intimidating, but don’t worry, it isn’t as complicated as it seems.
In this guide, we will explain self-employment tax in plain English, using simple examples so you can understand exactly what it is, who needs to pay it, and why it matters.
What Is Self-Employment Tax?
Think about someone who works for a company.
Every payday, a small amount is taken out of their salary for Social Security and Medicare. Their employer also pays the same amount on their behalf.
Now imagine you are your own boss.
Since there is no employer to share those taxes, you pay both portions yourself. That’s what self-employment tax is.
Simply put, it’s a tax that helps fund programs like Social Security (retirement and disability benefits) and Medicare (health insurance for many older adults and certain people with disabilities).

As a general rule, if your net earnings from self-employment are $400 or more during the year, self-employment tax may apply.
Why Do Self-Employed People Pay More?
This is one of the most common questions.
When you’re an employee, your employer shares the payroll tax with you.
When you’re self-employed, you are both the employee and the employer, so you’re responsible for paying both shares.
That doesn’t mean you’re being taxed twice; it simply means you’re covering the entire payroll tax yourself.
How Much Is Self-Employment Tax?
Self-employment tax has two parts:
| Tax | Rate |
|---|---|
| Social Security | 12.4% |
| Medicare | 2.9% |
| Total | 15.3% |
Keep in mind that this is different from federal income tax. Depending on your situation, you may owe both.
A Simple Example
Let’s make it easy.
Imagine John is a freelance photographer.
During the year:
- He earns $60,000 from clients.
- He spends $15,000 on cameras, software, travel, and other business expenses.
That leaves him with a net profit of $45,000.
Since John works for himself, he may owe self-employment tax on his eligible net earnings, along with any income tax he owes.
Can You Lower Your Tax Bill?
Yes, legally.
Many self-employed people pay more tax than necessary simply because they don’t claim all the deductions they’re entitled to.
Some common deductible business expenses include:
- Office supplies
- Business software
- Internet and phone used for work
- Business travel
- Marketing and advertising
- Professional fees
Keeping good records throughout the year can make a big difference when tax season arrives.
Don’t Forget Quarterly Taxes
Unlike employees, taxes usually aren’t automatically taken out of payments you receive.
That’s why many freelancers and business owners make estimated tax payments every three months.
Doing this helps you avoid a large tax bill and possible penalties when you file your annual tax return.
Forms You May Need
Most self-employed individuals commonly use:
- Schedule C – To report business income and expenses.
- Schedule SE – To calculate self-employment tax.
- Form 1040 – Your individual tax return.
- Common Mistakes People Make
- Many first-time freelancers make simple mistakes, such as:
- Forgetting to save money for taxes
- Missing quarterly tax payments
- Not tracking business expenses
- Mixing personal and business spending
- Waiting until tax season to organize receipts
- A little planning throughout the year can save you time, money, and stress.
Final Thoughts
Working for yourself gives you freedom and flexibility, but it also comes with tax responsibilities. The good news is that once you understand how self-employment tax works, it’s much easier to plan. Keep track of your income and expenses, set aside money for taxes, and make estimated payments if required.
A little preparation today can help you avoid surprises tomorrow.
Frequently Asked Questions
1. Is self-employment tax the same as income tax?
No. Self-employment tax pays for Social Security and Medicare. Income tax is separate, and many self-employed people pay both.
2. I only freelance part-time. Do I still have to pay it?
Possibly. If your net self-employment earnings are $400 or more, self-employment tax may apply.
3. Why is the rate 15.3%?
Because you’re paying both the employee’s and employer’s share of Social Security and Medicare taxes.
4. Can I claim any tax benefits?
Yes. You can generally deduct half of your self-employment tax when calculating your adjusted gross income, and you may also qualify for other business deductions.
5. Is self-employment tax only for business owners?
No. Freelancers, consultants, gig workers, and independent contractors may also have to pay it.
6. What happens if I don’t pay self-employment tax?
If you don’t pay the tax you owe, the IRS may charge interest and penalties. Paying your taxes on time or making estimated quarterly payments can help you avoid extra costs.
7. Do I need to pay self-employment tax if I have a regular job too?
It depends. If you have a full-time job and also earn money from freelancing or a side business, you may still owe self-employment tax on your self-employment income if your net earnings are $400 or more.
8. Can I deduct business expenses before calculating self-employment tax?
Yes. Eligible business expenses—such as office supplies, software, advertising, and business travel—are generally deducted first. Self-employment tax is calculated based on your net business earnings, not your total income.
9. How do I know if I’m self-employed?
You’re generally considered self-employed if you run your own business or provide services independently rather than working as an employee. Freelancers, consultants, online sellers, gig workers, and independent contractors are common examples.
10. Should I hire a tax professional?
If your income is straightforward, you may be able to prepare your own tax return using reliable tax software. However, if you have multiple income sources, significant business expenses, or questions about deductions, working with a tax professional can help you file accurately and potentially save money.
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