Tax & Payroll
California Income Tax Calculator (Form 540, 2025)
Estimate California personal income tax with the FTB rate schedules and the 1% Mental Health Services Tax.
Preparing your result…
What this calculator does
Estimates California personal income tax.
What your result means
CA tax before credits, including the 1% Mental Health Services Tax.
Formula
Taxable = AGI − max(standard, itemized); tax = Σ bracket slice × rate (1%–12.3%) + 1% × max(0, taxable − $1,000,000)
The step-by-step working for your own numbers appears with the result above and in the PDF report.
Frequently asked questions
Symbols and assumptions
- TI
- CA taxable income
- • FTB 2025 rate schedules (latest published).
- • 2025 CA standard deduction.
Sources and review
Reviewed 2026-09-23 · Next review 2027-01-15
- • Exemption and other credits not subtracted.
- • Rules change annually.
- • Educational estimate, not tax advice.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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