California State Tax Calculator
Print| Effective State Tax Rate | 0.00% |
California has the highest state individual income tax rates in the United States, featuring a progressive 9-tier tax structure with rates ranging from 1.0% to 12.3%. Furthermore, taxable income exceeding $1,000,000 is subject to an additional 1.0% Mental Health Services Tax surcharge (Mental Health Services Act), bringing California’s top marginal state income tax rate to 13.3%.
Our free California Tax Calculator computes your California taxable income, applies Franchise Tax Board (FTB) progressive tax brackets, and calculates your effective state tax rate and net paycheck.
How to Calculate California State Income Tax
California state income tax is calculated by starting with federal Adjusted Gross Income (AGI), applying California-specific adjustments, subtracting the California state standard deduction, and applying progressive tax rate brackets.
The California Taxable Income Formula:
California Taxable Income = Federal AGI ± CA State Tax Additions/Subtractions - CA Standard Deduction
California State Income Tax Brackets (Single Filers):
- $0 to $10,412: 1.0%
- $10,413 to $24,684: 2.0%
- $24,685 to $38,959: 4.0%
- $38,960 to $54,081: 6.0%
- $54,082 to $68,350: 8.0%
- $68,351 to $349,137: 9.3%
- $349,138 to $418,961: 10.3%
- $418,962 to $698,271: 11.3%
- Over $698,271: 12.3%
- Income Over $1,000,000: Additional 1.0% Mental Health Surcharge (13.3% Total)
California Standard Deductions & Personal Exemption Credits
The Franchise Tax Board (FTB) provides standard deductions and direct non-refundable tax credits:
| Filing Status | California Standard Deduction | Personal Exemption Credit | Dependent Exemption Credit |
|---|---|---|---|
| Single / Married Filing Separately | $5,363 | $144 Direct Credit | $446 per Dependent |
| Married Filing Jointly | $10,726 | $288 Direct Credit | $446 per Dependent |
| Head of Household | $10,726 | $144 Direct Credit | $446 per Dependent |
Step-by-Step Calculation Example
Consider a Single Filer in California earning a $100,000 annual salary:
- Gross Salary Income: $100,000
- CA Standard Deduction: $5,363
- Personal Exemption Credit: $144
Step 1: Compute California Taxable Income
CA Taxable Income = $100,000 - $5,363 = $94,637
Step 2: Apply California Progressive Tax Rate Brackets
First $10,412 @ 1.0% = $104.12
Next $14,272 ($10,413-$24,684) @ 2.0% = $285.44
Next $14,275 ($24,685-$38,959) @ 4.0% = $571.00
Next $15,122 ($38,960-$54,081) @ 6.0% = $907.32
Next $14,269 ($54,082-$68,350) @ 8.0% = $1,141.52
Remaining $26,287 ($68,351-$94,637) @ 9.3% = $2,444.69
Gross State Tax = $104.12 + $285.44 + $571.00 + $907.32 + $1,141.52 + $2,444.69 = $5,454.09
Step 3: Subtract Personal Exemption Credit
Net California State Income Tax = $5,454.09 - $144.00 = $5,310.09
Effective State Tax Rate = ( $5,310.09 / $100,000 ) × 100 = 5.31%
Frequently Asked Questions (FAQ)
What is California Disability Insurance (SDI) tax?
California imposes a mandatory State Disability Insurance (SDI) payroll tax on employee wages (1.1% rate with no wage cap), which funds short-term disability and Paid Family Leave (PFL) benefits.
Does California tax capital gains at the same rate as ordinary income?
Yes. California does not offer a lower preferential tax rate for long-term capital gains. All capital gains are taxed as ordinary income at California’s standard progressive tax rates (up to 13.3%).
Does California tax Social Security benefits?
No. California explicitly exempts Social Security retirement benefits from state income tax.