Side Hustle Taxes in California: What You Owe

How California Income Tax Stacks Against You

A reader named Marcus emailed me last year. He'd been freelancing in Austin for three years — web development, about $65,000 a year in net profit. Paid his federal taxes, paid his self-employment tax, and that was it. No state income tax in Texas. Then his wife got a job offer in San Jose. They moved. His first California tax year was, in his words, "a gut punch."

His freelance income didn't change. His expenses didn't change. His federal tax bill was the same. But suddenly there was a new line item: California state income tax of roughly $4,800 on that $65,000. His wife's W-2 salary pushed their combined income into California's higher brackets, and his side hustle income sat right on top of that stack, getting taxed at their marginal state rate of about 9.3%.

That's the core problem with California for side hustlers. The state's top marginal rate is 13.3% — the highest state income tax rate in the country. And California doesn't give your side hustle income its own separate bracket. It stacks on top of whatever other income you have. If your W-2 job or your spouse's income already puts your household at the 9.3% state bracket, every additional dollar of side hustle profit gets taxed starting there.

When you combine federal income tax (22-24% for many side hustlers with day jobs), self-employment tax (15.3%), and California's state rate (6-9.3% for most), you can easily lose 40-45% of your net side hustle profit to taxes. I've seen people quote higher numbers — 50%+ — and while that's technically possible at very high income levels with the Mental Health Services Tax surcharge (an extra 1% on income over $1 million), for most side hustlers the realistic combined rate is in the low-to-mid 40s. That's still brutal.

California Tax Brackets for Side Hustlers

California has ten income tax brackets. Most people know about the 13.3% top rate, but the brackets below it are what actually matter for side hustlers earning $30,000-$100,000 in profit.

For single filers in 2026, the brackets that hit most side hustlers are:

What makes these brackets deceptive: If you have a day job paying $60,000 and you earn $30,000 from a side hustle, your side hustle income doesn't start at the 1% bracket. Your total California taxable income is $90,000, and the side hustle portion sits in the $68,351-$90,000 range — meaning nearly all of it is taxed at 9.3%.

On $30,000 of side hustle income taxed at 9.3%, that's $2,790 in California state tax alone. Add federal income tax at 22% ($6,600) and self-employment tax at 15.3% on net earnings ($4,131), and your total tax on that $30,000 side hustle is approximately $13,521. You keep $16,479. California's share — $2,790 — is the difference between keeping 55 cents of every dollar (like I do in Texas) and keeping 45 cents.

The $800 LLC Franchise Tax

This is the tax that makes California unique — and not in a good way for side hustlers.

Every LLC registered in California owes a minimum $800 annual franchise tax to the Franchise Tax Board, regardless of income. You could form an LLC, never make a single dollar, and still owe California $800 every year until you dissolve it. The fee is due by the 15th day of the 4th month after your LLC's taxable year begins — which for most calendar-year LLCs means April 15.

There's one relief provision: LLCs formed on or after January 1, 2021, are exempt from the $800 fee for their first taxable year. So your first year is free. Starting year two, the clock ticks at $800 per year whether you like it or not.

For context, I formed my LLC in Texas for a $300 one-time filing fee. There's no annual franchise tax payment — just the no-tax-due report I file each year. In California, that same LLC would cost me $800 annually before I deducted a single expense or earned a single dollar.

This creates a real strategic problem for California side hustlers. An LLC provides liability protection and can be valuable for separating personal and business assets. But if your side hustle nets $10,000 a year, paying $800 for the privilege of having an LLC means 8% of your profit is gone to a single state fee. At $5,000 in profit, it's 16%. At $2,000, it's 40%.

The math simply doesn't work for small side hustles. Many California side hustlers are better off operating as sole proprietors until their income is high enough that the $800 is a rounding error — which, for most people, means $50,000+ in net profit before the LLC starts to make financial sense in California specifically.

If your side hustle earns over $250,000 in gross revenue, there's an additional LLC fee on top of the $800:

• $250,000 - $499,999 gross revenue: additional $900
• $500,000 - $999,999: additional $2,500
• $1,000,000 - $4,999,999: additional $6,000
• $5,000,000+: additional $11,790

These additional fees are based on gross revenue, not net profit. An e-commerce side hustle that does $300,000 in gross sales but only nets $40,000 in profit would owe $800 + $900 = $1,700 in LLC fees alone. That's a significant hit on a $40,000 profit.

Estimated Tax Payments to the FTB

California requires estimated tax payments if you expect to owe more than $500 in state tax (or $250 if married filing separately). For most side hustlers earning more than about $6,000-$8,000 in net profit, you'll cross that threshold.

The due dates mirror the federal schedule: April 15, June 15, September 15, and January 15. You pay through the Franchise Tax Board's online system using Form 540-ES. And here's the part that takes getting used to: these are separate from your federal estimated payments. You're making two sets of quarterly payments to two different agencies — one check (or online payment) to the IRS, and another to California's FTB.

I talk to a lot of California side hustlers who forget the state estimated payments entirely. They set up their federal quarterly payments, feel responsible and organized, and then get hit with a California underpayment penalty in April. The penalty isn't enormous — it's essentially interest on the amount you underpaid — but it's an unnecessary cost that compounds the already-high tax burden.

The safe harbor for California estimated payments: pay at least 100% of last year's state tax liability in equal quarterly installments, or 110% if your adjusted gross income exceeded $150,000 ($75,000 if married filing separately). If you hit the safe harbor, no penalty regardless of how much you actually owe.

Sales Tax for Online Sellers

California's base state sales tax rate is 7.25% — already the highest base state sales tax rate in the country. Local additions push the combined rate to between 7.25% and 10.75% depending on where you are. In Los Angeles, the combined rate is 9.5%. In San Francisco, 8.625%. Some jurisdictions in the Bay Area hit 10.25% or higher.

If you sell physical products through your side hustle, sales tax applies. California's marketplace facilitator law requires platforms like Amazon, Etsy, eBay, and Walmart to collect and remit sales tax on third-party sales to California buyers. So if you sell exclusively through those platforms, the sales tax collection is handled for you.

But if you sell through your own website, at craft fairs, pop-up shops, or through social media direct sales, you need a California seller's permit (free to obtain from the CDTFA) and you must collect and remit sales tax yourself. Filing frequency depends on your volume — monthly, quarterly, or annually.

One wrinkle that catches e-commerce sellers: California taxes shipping charges if the underlying product is taxable. Many states don't. So if you sell a $20 item with $5 shipping to a California buyer, sales tax applies to $25, not $20. It's a small difference per transaction, but it adds up across hundreds of sales.

AB5 and Worker Classification

Assembly Bill 5 — AB5 — went into effect January 1, 2020 and fundamentally changed how California classifies workers. For side hustlers, this matters in two scenarios: when you're the worker, and when you hire help.

When you're the worker: If you do gig work through platforms like DoorDash, Uber, Lyft, or Instacart, you might expect AB5 to classify you as an employee entitled to benefits, overtime, and employer-paid taxes. And initially, that was the direction California was heading. But Proposition 22, passed by voters in November 2020, largely exempted app-based transportation and delivery companies from AB5's requirements. Gig workers on those platforms remain independent contractors, though with some additional benefits like a healthcare subsidy and accident insurance.

If you're a freelance writer, designer, photographer, or consultant, AB5's impact depends on your specific situation. The law presumes workers are employees unless the hiring entity can prove all three prongs of the ABC test: (A) the worker is free from the company's control, (B) the work is outside the company's usual business, and (C) the worker has an independently established business. Prong B is the tough one — a freelance writer working for a media company has a hard time arguing the writing is "outside" the company's usual business.

Several professions got exemptions — including accountants, engineers, certain healthcare professionals, real estate agents, and others — but the exemptions are narrow and come with their own conditions.

When you hire help: If your side hustle grows to the point where you bring on workers, AB5 applies to you as the hiring party. If you hire a virtual assistant, a contractor to help fulfill orders, or anyone else, you need to carefully evaluate whether they meet the ABC test or whether California law requires you to classify them as employees. Misclassification can result in back taxes, penalties, and lawsuits. This is genuinely CPA-and-lawyer territory — I'm not going to pretend I can give you a definitive answer on your specific situation.

City Business Taxes: LA, SF, and Others

As if the state-level taxes weren't enough, several California cities add their own business tax on top. These aren't income taxes in the traditional sense, but they function similarly — they're taxes you owe based on running a business within city limits.

Los Angeles requires a Business Tax Registration Certificate (essentially a city business license) and charges a gross receipts tax. The rate varies by business category, but most service-based businesses fall under the "professions and occupations" category at a rate around 0.4545% to 0.5346% of gross receipts. On $50,000 of gross receipts, that's $227-$267 per year. Not ruinous, but it's another line item, another filing, another deadline. And the registration certificate itself costs $37.59 minimum.

San Francisco overhauled its business tax system and now imposes a Gross Receipts Tax on most businesses with SF gross receipts exceeding $2.09 million, plus a Homelessness Gross Receipts Tax on businesses with over $50 million in gross receipts. Most side hustlers fall well under these thresholds. However, SF still requires a business registration and charges a $47 annual registration renewal fee. Small businesses with gross receipts under $2.09 million may owe only the registration fee and a small payroll expense tax if they have employees.

Other cities — Oakland, San Jose, Sacramento, San Diego — each have their own business license requirements and, in some cases, business tax structures. The details vary wildly. Oakland charges a flat license fee based on business type. San Jose has a business tax based on number of employees or gross receipts. Sacramento has its own version.

The pattern is consistent: it's not that any single city tax is devastating. It's that each one adds complexity, another form, another filing date, another envelope from a government agency. Running a side hustle in LA means juggling federal estimated payments, California FTB estimated payments, LA city business tax, possibly sales tax remittance, and the $800 LLC fee. That's five separate tax obligations before you've earned dollar one.

Why Some Freelancers Leave California

I don't bring this up to tell anyone to move. Where you live is about far more than taxes. But I'd be ignoring reality if I didn't acknowledge that California's tax burden is a genuine factor driving some freelancers and side hustlers to relocate — and that California makes leaving more complicated than most states.

The math is simple. A freelancer earning $100,000 in net profit pays roughly $7,000-$8,000 in California state income tax (depending on other income and deductions). Move to Texas, Florida, Nevada, Washington, or any other state with no income tax, and that $7,000-$8,000 per year goes back into your pocket. Over five years, that's $35,000-$40,000 in savings. For a side hustler, that could be a year's worth of profit retained instead of sent to Sacramento.

The post-pandemic shift to remote work made this calculation real for a lot of people. If your clients are online and your work is portable, your California apartment isn't providing you anything tax-related that a Texas house can't — and the Texas house probably costs less.

But California's Franchise Tax Board is famously aggressive about residency. If you claim to have moved but maintain a home in California, keep your gym membership, have your kids in California schools, or spend more than 9 months in the state, the FTB may audit you and argue you never actually left. They look at driver's licenses, voter registration, where your pets' vet is, where your bank is, where your Amazon deliveries go. It's thorough.

The safe approach if you're leaving: make a clean break. Cancel your California lease or sell your California home. Get a new driver's license in your new state within 30 days. Register to vote there. Move your bank accounts. Update your address everywhere. Document the date of your move. File a part-year California return for the year you leave, reporting only income earned through your departure date.

For side hustlers who stay — and many do, because California's economy, weather, lifestyle, and network effects are worth a lot — the strategy is aggressive deduction-taking, disciplined quarterly payments, and careful entity structure planning. A good CPA who specializes in California self-employment tax is worth every penny of their fee.

Bruce Samuels

Personal Finance Writer

Bruce writes about side hustle finances from DeSoto, Texas. He chose Texas over California partly because of the tax math described in this article — and he's heard from enough California freelancers to know the pain is real. He is not a CPA.

Related reading: The Complete Side Hustle Tax Guide | How to Pay Quarterly Estimated Taxes | Should You Form an LLC for Your Side Hustle?