How Does Self-Employment Tax Work?

Key Takeaways

• The self-employment tax rate is 15.3%. It covers 12.4% for Social Security and 2.9% for Medicare, applied to 92.35% of your net earnings.
• The 2026 Social Security wage base is $184,500. Earnings above it skip the 12.4% portion. Medicare has no cap. The 0.9% Additional Medicare Tax applies above $200,000 (single), $250,000 (joint), or $125,000 (separate).
• You owe it if you earn $400 or more in net self-employment income. This includes sole proprietors, freelancers, independent contractors, partners, and side-gig earners.
• Example: $100,000 in net earnings means $14,129.55 in self-employment tax. You can deduct half, $7,064.78, when figuring your adjusted gross income.
• Pay quarterly if you expect to owe $1,000 or more. For the 2026 tax year, payments are due April 15, June 15, September 15, and January 15, 2027.
• Business expenses and an S-corp election can lower self-employment tax. Retirement contributions, self-employed health insurance, and the QBI deduction lower income tax only.

If you’re self-employed, you likely know that managing your taxes can feel more complicated than simply having an employer deduct them from your paycheck. One of the most critical aspects of your tax responsibility is self-employment tax, which covers Social Security and Medicare contributions. In this guide, we’ll break down what self-employment tax is, how it’s calculated, and provide examples to help you navigate this key aspect of tax compliance. 

What is Self-Employment Tax? 

Self-employment tax is a contribution to Social Security and Medicare for individuals who work for themselves. Traditionally, these contributions are split between the employer and the employee. For employees, 6.2% of their wages go toward Social Security and 1.45% goes toward Medicare. Their employer matches these amounts. However, if you’re self-employed, you must pay both the employer’s and the employee’s share, which totals 15.3% of your net earnings: 

• 12.4% for Social Security 

• 2.9% for Medicare 

This tax ensures that even though you don’t have an employer contributing on your behalf, you’re still putting into the Social Security and Medicare systems. 

Self-Employment Tax and Income Tax 

It’s important to note that self-employment tax is separate from income tax. You will still need to file an income tax return and pay taxes based on your total income, just like any other taxpayer. However, self-employed individuals can deduct 50% of their self-employment tax when calculating their adjusted gross income (AGI). This deduction helps reduce your taxable income and partially offsets the burden of paying both the employee and employer portions of the tax. 

Breaking Down the Components 

• Social Security: The Social Security portion of the self-employment tax is 12.4%, applied to your net earnings (after the 92.35% adjustment) up to the annual Social Security wage base. For 2026, that base is $184,500. Earnings above it aren’t subject to the Social Security portion. This limit typically increases each year, so check the current figure before you calculate.
• Medicare: The Medicare portion is 2.9% of net earnings. Unlike Social Security, there is no income cap for Medicare tax. In other words, all net earnings are subject to the 2.9% tax. 
• Additional Medicare Tax: For higher-income individuals, an additional 0.9% Medicare tax may apply to earnings exceeding $200,000 for single filers, heads of household, or qualifying surviving spouses with dependent children. For married couples filing jointly, this amount increases to $250,000. If you are married filing separately, you’ll pay the additional Medicare tax on earnings that exceed $125,000. 

Who Pays Self-Employment Tax? 

If you earn $400 or more in net earnings from self-employment during the year, you’re required to pay self-employment tax. This applies to sole proprietors, independent contractors, freelancers, and even those running side gigs in addition to their regular job. Essentially, if you’re generating income without an employer withholding Social Security and Medicare taxes, you’re responsible for self-employment tax. In addition, if you earned at least $108.28 from church employment, you need to pay self-employment taxes. It also applies if you’re a partner in a partnership or a member of an LLC that hasn’t elected to be taxed as a corporation, since the IRS generally treats your share of that income the same way it treats sole proprietor income.

Calculating Self-Employment Tax 

To calculate self-employment tax, you’ll first need to determine your net earnings. This is your total income from self-employment minus allowable business expenses, which you’ll generally report on Schedule C. You’ll then use Schedule SE, Self-Employment Tax, to figure out what you owe. Once you’ve calculated your net earnings, you’ll apply the 15.3% self-employment tax rate to 92.35% of that amount. Why 92.35%? The IRS allows a deduction for the employer portion of your self-employment tax, which is the equivalent of 7.65% of your earnings. For high-income earners, there is an Additional Medicare Tax of 0.9% on wages, compensation, and self-employment income above a certain threshold. For self-employed individuals, this threshold is: 

• $200,000 if filing as a single taxpayer 
• $250,000 if married filing jointly 

Here’s how that plays out at a few different income levels for 2026.

Example 1: $50,000 in net earnings 

Let’s say you’re a freelance graphic designer and your business earned $60,000 for the year. You also had $10,000 in business-related expenses, like software, marketing, and office supplies. 

1. Gross income: $60,000 

1. Business expenses: $10,000 

1. Net earnings: $60,000 – $10,000 = $50,000 

Now, you need to calculate self-employment tax on 92.35% of your net earnings: 

92.35% of $50,000 = $46,175 

Self-employment tax: $46,175 × 15.3% = $7,064.78 

You owe $7,064.78 in self-employment tax. However, you also get to deduct half of this amount as an “above-the-line” deduction when calculating your income taxes, which reduces your overall taxable income. 

Example 2: $100,000 in net earnings

Let’s say your net earnings from self-employment total $100,000 for the year.

• Adjusted net earnings: $100,000 × 92.35% = $92,350
• Social Security portion: $92,350 × 12.4% = $11,451.40
• Medicare portion: $92,350 × 2.9% = $2,678.15
• Total self-employment tax: $11,451.40 + $2,678.15 = $14,129.55

You can deduct half of this amount, $7,064.78, when you calculate your adjusted gross income.

Example 3: $200,000 in net earnings

Let’s say your net earnings from self-employment total $200,000 for the year. The Social Security portion applies only up to the 2026 wage base of $184,500, and it’s measured against your adjusted earnings.

• Adjusted net earnings: $200,000 × 92.35% = $184,700
• Social Security portion: $184,500 × 12.4% = $22,878

The Medicare portion applies to all of your adjusted net earnings:

• $184,700 × 2.9% = $5,356.30

Total self-employment tax:

• $22,878 + $5,356.30 = $28,234.30

Even though your earnings exceed the Social Security wage base, you are still required to pay the Medicare tax on all of your net earnings.

Example 4: $250,000 in net earnings (with the Additional Medicare Tax)

Let’s say you’re single and your net earnings total $250,000 for the year.

• Adjusted net earnings: $250,000 × 92.35% = $230,875
• Social Security portion (capped at the wage base): $184,500 × 12.4% = $22,878
• Medicare portion (no cap): $230,875 × 2.9% = $6,695.38
• Total self-employment tax: $22,878 + $6,695.38 = $29,573.38

Your adjusted earnings are over the $200,000 threshold for single filers, so you’ll also owe the 0.9% Additional Medicare Tax on the amount above it. This is figured on Form 8959, separately from your self-employment tax. If you also earn W-2 wages, those count toward the threshold first.

• Amount over the threshold: $230,875 – $200,000 = $30,875
• Additional Medicare Tax: $30,875 × 0.9% = $277.88
• Total Medicare-related tax: $6,695.38 + $277.88 = $6,973.26

The Social Security wage base changes most years, so if you’re working through these numbers for a year other than 2026, check the current limit before you calculate.

Managing Self-Employment Tax 

Having your own business puts you on the hook for making sure you’re staying up to date with your financial and tax obligations. Beside managing the operations side of your business, you’ll have several items to keep in mind for self-employment tax. 

1. Quarterly Estimated Tax Payments: Since self-employed individuals don’t have taxes withheld from their income throughout the year, the IRS generally requires quarterly estimated payments if you expect to owe $1,000 or more for the year after credits and withholding. For the 2026 tax year, payments are due April 15, June 15, September 15, and January 15, 2027. See our quarterly estimated tax payments guide for safe harbor rules and what happens if you miss one.

1. Keep Accurate Records: Maintain detailed records of your business income and expenses. This not only helps you accurately calculate your self-employment tax but also ensures you can take advantage of all eligible deductions. 

1. Explore Deductions: Self-employed individuals can deduct certain business expenses from their income, reducing their taxable net earnings. Common deductions include home office expenses, business-related travel, and health insurance premiums. 

Failing to make these payments can result in penalties at the end of the year, so it’s crucial to stay on top of your tax obligations throughout the year. Given the complexity of self-employment tax rules, it’s advisable to consult a tax professional. They can help you navigate the intricacies of tax laws, identify eligible deductions, and ensure compliance.

Ways to Reduce Your Self-Employment Tax

Self-employment tax applies to your net earnings whether you’re a sole proprietor, freelancer, or partner. One of the most common ways to change that is by electing S corporation status. Under an S-corp election, you pay yourself a reasonable salary for the work you do (subject to standard payroll taxes), and remaining profit can be taken as distributions, which aren’t subject to self-employment tax.

The IRS requires that salary to be genuinely reasonable for the work you perform. Paying yourself an artificially low salary to shrink your self-employment tax can draw IRS attention. The IRS can reclassify distributions as wages, along with penalties and back taxes, if it decides your salary doesn’t reflect the value of your work.

Some tax professionals point to consistent profits of roughly $60,000 or more as the point where the payroll setup and added compliance costs of an S-corp start to pay off, though the right number depends on your situation. Our guides on electing S-corp status and S-corp versus LLC taxes walk through the salary-and-distribution math in more detail. Because this involves a formal election and ongoing compliance requirements, talk with a CPA before you change your business structure.

Other Ways to Lower Your Tax Bill

Business expenses reduce your net earnings, which lowers both your self-employment tax and your income tax. See our guide to tax deductions for small businesses for a fuller list. Other strategies work differently. Self-employment tax and income tax are calculated separately, so the following lower your income tax bill only, not your self-employment tax:

• Retirement contributions: A SEP IRA or Solo 401(k) lets you shelter a meaningful share of your income from income tax now. For 2026, Solo 401(k) plans allow up to $24,500 in employee contributions ($32,500 if you’re 50 or older). Combined employee and employer contributions can reach $72,000, not counting the catch-up amount. SEP IRA contributions are capped at 25% of compensation or $72,000, whichever is less. If you’re self-employed, 25% of compensation works out to roughly 20% of your net earnings. Learn more in our SEP IRA and Solo 401(k) guides.
• Self-employed health insurance deduction: You can generally deduct premiums for medical, dental, and qualifying long-term care insurance for yourself, your spouse, and your dependents, up to your business’s net profit. You can’t claim it for any month you were eligible for a subsidized employer plan, including through a spouse. Long-term care premiums are subject to age-based limits.
• Qualified Business Income (QBI) deduction: Made permanent by the One Big Beautiful Bill Act, this lets many self-employed people deduct up to 20% of their qualified business income on their income tax return. It’s worth claiming if you’re eligible, but it’s an income-tax break only. It doesn’t reduce what you owe in self-employment tax. See how it fits into your bigger picture in How the Big Beautiful Bill Could Affect Self-Employed Deductions.

Benefits of Paying Self-Employment Tax 

While paying self-employment tax can feel like a heavy burden, it’s important to recognize the benefits. These payments contribute to your Social Security and Medicare accounts, which provide financial assistance in retirement and help cover healthcare costs once you’re eligible. By consistently paying into these systems, you’re building up your benefits for the future. 

Frequently Asked Questions

How much is self-employment tax?

Self-employment tax is 15.3% of 92.35% of your net earnings from self-employment. That’s 12.4% for Social Security, up to the annual wage base, and 2.9% for Medicare, with no cap. On $50,000 in net earnings, for example, that works out to about $7,065. It’s separate from, and in addition to, your federal income tax.

Can you get self-employment tax back, and does the QBI deduction help?

No. Self-employment tax isn’t something you can claim back, because it funds your future Social Security and Medicare benefits. The Qualified Business Income deduction doesn’t reduce it either, since QBI only lowers income tax. What you can do is deduct half of your self-employment tax when calculating your adjusted gross income. That lowers your income tax bill, though not the self-employment tax itself.

Is being self-employed worth it with the extra tax?

For many people, yes, though it depends on your income and goals. Self-employment tax funds the same Social Security and Medicare benefits an employer would otherwise split with you. Self-employment can also give you more flexibility with deductions and retirement plan options. The tradeoff is paying both halves of the tax yourself and managing quarterly payments.

Can I reduce how much self-employment tax I owe?

The main lever is your business structure. Electing S-corp status lets you split income into a reasonable salary (subject to payroll taxes) and distributions (not subject to self-employment tax). That can lower your bill once your profits are consistently well above a reasonable salary. See “Ways to Reduce Your Self-Employment Tax” above for the details and the tradeoffs.

Tax Help for Self-Employed Individuals 

Self-employment tax is an essential consideration for individuals working independently. Understanding its components, calculating the tax accurately, and managing financial responsibilities through proper record-keeping and strategic planning are key to a successful self-employed journey. By staying informed and seeking professional advice when needed, individuals can confidently navigate the maze of self-employment tax and focus on building a thriving business. If you’re new to self-employment or have more complex tax situations, professional advice can be invaluable in maximizing your deductions and ensuring your taxes are handled correctly. Optima Tax Relief has over a decade of experience helping taxpayers get back on track with their tax debt.  

If You Need Tax Help, Contact Us Today for a Free Consultation