TaxStash / Taxes by state / California
2026 · Self-employed tax guide
If you freelance, contract, or run a one-person business in California, taxes work differently than they did on a W-2. Here's what you actually owe in 2026 — and how much to set aside so a bill never catches you off guard.
California uses a graduated income tax, ranging from about 1.0% on lower income up to roughly 13.3% at the top brackets. Most self-employed people fall somewhere in the middle of that range.
California has some of the highest top rates in the country, though those top brackets only hit very high earners.
The biggest shock when you go independent isn't income tax — it's self-employment tax. On a W-2, your employer quietly paid half of your Social Security and Medicare. On your own, you pay both halves: 15.3% of your net earnings, on top of any federal and state income tax. This is the same in every state, and it's why setting money aside matters so much.
You'll generally make quarterly estimated payments to both the IRS and California — miss the deadlines and you can owe penalties even if you settle up at year-end. A good rule of thumb is to move a fixed percentage of every payment into a separate account the moment it lands.
The 2026 federal quarterly due dates are April 15, June 15, September 15, 2026, and January 15, 2027.
Calculate your California set-aside →Free 2026 calculator, pre-set to CaliforniaFor 2026, California's standard deduction is about $5,540 for single filers and $11,080 for married couples filing jointly. That amount comes off your income before the state rate applies — and it stacks on top of your federal deductions and any business expenses you write off.
Estimate and general information only — not tax advice. Federal figures use 2026 IRS amounts; state figures use 2026 state rate tables. Local/city taxes and state-specific credits and exemptions are simplified. Confirm with a tax professional before filing.