As a 1099 independent contractor in California, you pay federal income tax and self-employment tax (15.3%) — but you can deduct every legitimate business expense to reduce your tax bill. California has the highest state income tax in the US (up to 13.3%) plus SDI (0.9%). For 1099 workers, accurate deductions are even more critical to reduce your CA state tax bill.
The list of deductible business expenses for 1099 workers is determined by federal IRS rules — specifically IRS Schedule C. These rules apply uniformly regardless of which state you live in. The main difference for California workers is how deductions interact with your state tax liability.
In California, every dollar of business deduction reduces both your federal and California state taxable income. At a combined federal + state effective rate of 30–40%, a $10,000 deduction can save $3,000–$4,500 in total taxes.
California has the highest state income tax in the US (up to 13.3%) plus SDI (0.9%). For 1099 workers, accurate deductions are even more critical to reduce your CA state tax bill.
California requires estimated tax payments if you expect to owe $500 or more in CA taxes. CA Form 540-ES due dates mirror federal: April 15, June 16, September 15, January 15.
See every write-off available for your specific job type — DoorDash, Uber, Airbnb, OnlyFans, Instacart and more.
Open 1099Deductions.com →