California 1099 Self-Employment Tax Calculator

California has a progressive income tax with a top rate of 12.3%. Estimate your self-employment tax, federal and California state tax, effective rate, and quarterly payment amounts below.

Tax year 2026Last updated September 18, 2026

Total estimated tax

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Effective rate

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Take-home

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Set aside per $1

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Self-employment tax: —
Federal income tax: —
State income tax: —

Quarterly payment vouchers

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Estimates for tax year 2026, for informational purposes only — not tax advice. California's 2026 brackets haven't been published yet, so the most recent confirmed prior-year schedule is used as a placeholder; figures for New York, Ohio, Georgia, Virginia, Arizona, Massachusetts, Utah, Vermont, Maine, Mississippi, Missouri, Colorado, Connecticut, Delaware, Idaho, New Mexico, Oklahoma, and Oregon are drawn from secondary sources pending direct confirmation against the state's own published schedule. Consult a tax professional before filing.

California self-employment tax, explained

California pairs a high top rate with valuable safe-harbor planning opportunities for freelancers with fluctuating income — use the calculator's advanced section to target last year's tax instead of guessing at 90% of this year's.

Self-employment (SE) tax is the same everywhere — 15.3% of 92.35% of your net profit, split between Social Security (12.4%, up to the annual wage base) and Medicare (2.9%, uncapped). What changes by state is the income tax layer on top: California has a progressive income tax with a top rate of 12.3%, applied to your taxable income after federal deductions. For filing status, California's tax doubles every bracket threshold for joint filers compared to single filers, similar to the federal structure.

California's 2026 tax brackets haven't been published yet — this calculator uses the most recent confirmed prior-year schedule as a placeholder until the state publishes 2026 figures.

California state tax at different income levels

Computed directly from California's actual 2026 tax structure — a single filer with no other income and no expenses, at increasing levels of net 1099 profit:

Net profit	California state tax	Effective state rate
$50,000	$375	0.8%
$100,000	$2,302	2.3%
$150,000	$5,612	3.7%
$250,000	$12,730	5.1%

California worked example

A single freelancer in California with $75,000 in net 1099 income and no other income:

Self-employment tax: $10,597
Federal income tax: $4,898
California state income tax: $1,108
Total tax: $16,603 (about 22.1% effective rate)
Take-home: $58,397
Quarterly estimated payment: $3,736 per quarter

Try your own numbers in the calculator above — your actual income, expenses, and filing status will change these figures.

Frequently asked questions

What is the California state income tax rate for 1099 income?

California has a progressive income tax with a top rate of 12.3%. Its tax doubles every bracket threshold for joint filers compared to single filers, similar to the federal structure. See the "California self-employment tax, explained" section above for how it applies to your specific numbers.

How is self-employment tax calculated?

Self-employment tax is 15.3% of your net self-employment earnings (92.35% of net profit): 12.4% Social Security up to the annual wage base, plus 2.9% Medicare on all net earnings. If your combined income exceeds the Additional Medicare Tax threshold for your filing status, an extra 0.9% applies above that threshold.

What's the difference between self-employment tax and income tax?

Self-employment tax funds Social Security and Medicare — it's the self-employed equivalent of the payroll taxes an employer would otherwise split with you. Federal (and state) income tax is separate, calculated on your taxable income after deductions like the standard deduction and the QBI deduction.

Other West states

See all 50 states → · ← Back to the main 1099 self-employment tax calculator