If you work for yourself in Southern California, whether you’re a freelance designer in Los Angeles, an independent contractor in Orange County, or a small business owner in San Diego, self-employment tax is one of the most important things to understand. It catches a lot of people off guard the first time they see what they owe, and without proper planning, it can take a serious bite out of your income.
This guide breaks down exactly what self-employment tax is, how it works, and what you can do to manage it effectively.
What Is Self-Employment Tax?
Self-employment tax (SE tax) is a federal tax that covers Social Security and Medicare contributions for people who work for themselves. When you’re an employee, your employer splits these costs with you, each paying 7.65% of your wages. When you’re self-employed, you’re both the employer and the employee, which means you pay both sides of that tax yourself.
The current self-employment tax rate is 15.3%, broken down as:
- 12.4% for Social Security (on net earnings up to the annual wage base limit, which is $168,600 for 2024)
- 2.9% for Medicare (no income cap)
If your net self-employment income exceeds $200,000 as a single filer (or $250,000 for married filing jointly), an additional 0.9% Medicare surtax applies.
Who Has to Pay Self-Employment Tax?
You generally owe self-employment tax if your net earnings from self-employment are $400 or more in a year. This applies to:
- Freelancers and independent contractors
- Sole proprietors
- Gig economy workers (rideshare, delivery, etc.)
- Partners in a partnership
- Single-member LLC owners
- Side hustle earners with a day job
Southern California’s economy is full of self-employed professionals: creative workers in the entertainment industry, tech contractors in the South Bay, real estate agents throughout the Inland Empire, and tradespeople across San Bernardino and Riverside Counties. If any of this sounds like you, self-employment tax applies.
How Is Self-Employment Tax Calculated?
Self-employment tax is calculated on your net earnings, which is your gross self-employment income minus allowable business expenses.
Here is how it works step by step:
Step 1: Calculate net earnings. Take your gross self-employment income and subtract your business deductions (more on this below).
Step 2: Multiply by 92.35%. The IRS allows you to reduce your net earnings by 7.65% before calculating SE tax, which accounts for the employer-side deduction.
Step 3: Apply the 15.3% rate. Multiply your adjusted net earnings by 15.3% to get your SE tax amount.
Step 4: Deduct half the SE tax on your income tax return. You can deduct 50% of the self-employment tax when calculating your adjusted gross income, which reduces your overall income tax bill.
Example: Say you’re a freelance video editor in Burbank who made $80,000 in net income last year.
- $80,000 x 92.35% = $73,880
- $73,880 x 15.3% = $11,304 in self-employment tax
- You can then deduct $5,652 (half of $11,304) from your gross income
That’s $11,304 owed in SE tax alone, before federal and California income taxes are even factored in. This is why planning ahead is so critical.
Self-Employment Tax vs. Income Tax
A common point of confusion is the difference between self-employment tax and income tax. They are two separate obligations.
Self-employment tax covers Social Security and Medicare. Income tax is based on your taxable income after deductions and applies at both the federal level and the state level. California has some of the highest state income tax rates in the country, with rates reaching up to 13.3% for high earners. Southern California residents who are self-employed are subject to both, making tax planning especially important.
Estimated Quarterly Taxes
Unlike employees who have taxes withheld from each paycheck, self-employed individuals are responsible for paying taxes throughout the year through quarterly estimated tax payments. The IRS expects you to pay as you earn, and if you underpay, you may face penalties.
The 2024 estimated tax due dates are:
- April 15 (for income earned January 1 through March 31)
- June 17 (for income earned April 1 through May 31)
- September 16 (for income earned June 1 through August 31)
- January 15, 2025 (for income earned September 1 through December 31)
California also requires estimated payments to the Franchise Tax Board (FTB) on a slightly different schedule. Missing these deadlines or underpaying can result in penalties from both the IRS and the state.
Deductions That Reduce Your Self-Employment Tax
One of the most powerful strategies for reducing your SE tax is maximizing your business deductions, since SE tax is based on net earnings. Common deductions for self-employed individuals in Southern California include:
- Home office deduction (especially relevant given high SoCal rents)
- Business mileage (Los Angeles has some of the highest vehicle usage in the country)
- Health insurance premiums for yourself and your family
- Retirement plan contributions (SEP-IRA, Solo 401(k), SIMPLE IRA)
- Professional services including accounting, legal, and bookkeeping fees
- Equipment, software, and technology
- Business-related travel, meals, and education
Properly tracking and categorizing these expenses throughout the year is one of the most effective ways to lower your tax burden.
Structuring Your Business to Reduce SE Tax
Depending on your income level, changing your business structure may reduce your self-employment tax exposure. For example, forming an S corporation allows you to pay yourself a reasonable salary (which is subject to payroll taxes) and take additional income as distributions (which are not subject to SE tax).
This strategy can produce meaningful savings for higher-income self-employed professionals, but it comes with added complexity, including payroll requirements, corporate filings, and California’s additional $800 annual minimum franchise tax. A qualified CPA can help you determine whether this makes sense for your situation.
Why Working With a CPA in Southern California Matters
Tax rules for self-employed individuals are complex, and they interact with California state rules in ways that can be easy to get wrong. An experienced accounting firm that understands Southern California’s business environment, including local industries, high cost of living considerations, and California-specific tax rules, can help you:
- Accurately calculate and plan for your SE tax
- Stay current with quarterly estimated payment requirements
- Identify every deduction you’re entitled to
- Evaluate whether restructuring your business makes sense
- Avoid costly IRS or FTB notices and penalties
Whether you’re a new freelancer just starting out or an established contractor looking for smarter tax planning, working with a local accounting professional can more than pay for itself.
Ready to Take Control of Your Self-Employment Taxes?
At Accounting Fresh, we work with self-employed professionals, freelancers, and small business owners throughout Southern California, including Los Angeles, Orange County, San Diego, the Inland Empire, and the surrounding areas. We’ll help you understand exactly what you owe, plan for it throughout the year, and keep more of what you earn.