What Is the Self-Employment Tax?

Working for yourself, either as a part-time side hustle or a full-time endeavor, can be very exciting and financially rewarding. But one downside to self-employment is that you're responsible for following special tax rules. Missing tax deadlines or paying the wrong amount can lead to expensive penalties.

Let's talk about what the self-employment or SE tax is and how it compares to payroll taxes for employees. You’ll learn who must pay the SE tax, how to pay it, and tips to stay compliant when you work for yourself.

What is the self-employment (SE) tax?

In addition to federal and applicable state income taxes, everyone must pay Social Security and Medicare taxes. These two social programs provide you with retirement benefits, disability benefits, survivor benefits, and Medicare health insurance benefits.

Many people don’t realize that when you’re a W-2 employee, your employer must pick up the tab for a portion of your taxes. Thanks to the Federal Insurance Contributions Act (FICA), employers are generally required to withhold Social Security and Medicare taxes from your paycheck and match the tax amounts you owe.

In other words, your employer pays half of your Social Security and Medicare taxes, and you pay the remaining half. Employees pay 100% of federal and state income taxes, which also get withheld from your wages and sent to the government.

When you have your own business, you’re typically responsible for paying the full amount of income taxes, including 100% of your Social Security and Medicare taxes.

But when you have your own business, you’re typically responsible for paying the full amount of income taxes, including 100% of your Social Security and Medicare taxes.

Who must pay the self-employment tax?

All business owners with "pass-through" income must pay the SE tax. That typically includes every business entity except C corporations (or LLCs that elect to get taxed as a corporation).

When you have a C corp or get taxed as a corporation, you work as an employee of your business. You're required to withhold all employment taxes (federal, state, Social Security, and Medicare) from your salary or wages. Other business entities allow income to pass directly to the owner(s), so it gets included in their personal tax returns.

You must pay the SE tax no matter if you call yourself a solopreneur, independent contractor, or freelancer—even if you're already receiving Social Security or Medicare benefits.

You must pay the SE tax no matter if you...

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