California taxes more income at higher rates than any other state. If you live or earn money in the Golden State for 2025, your state return (Form 540) is separate from your IRS Form 1040 — and it can be the larger of the two bills depending on where you fall in the brackets. This guide walks through the 2025 numbers, key credits, deadlines, and how California compares to no-tax states.
The 2025 California income tax brackets — single filer
The Franchise Tax Board (FTB) administers California state income tax. For 2025, there are nine marginal brackets for single filers and married-filing-separately:
| Rate | Taxable income (single) |
|---|---|
| 1.00% | $0 – $10,756 |
| 2.00% | $10,757 – $25,499 |
| 4.00% | $25,500 – $40,245 |
| 6.00% | $40,246 – $55,866 |
| 8.00% | $55,867 – $70,606 |
| 9.30% | $70,607 – $360,659 |
| 10.30% | $360,660 – $432,787 |
| 11.30% | $432,788 – $721,314 |
| 12.30% | $721,315+ |
Married filing jointly thresholds are roughly double. Head of household sits between the two.
There is also a 1% Mental Health Services Tax on taxable income above $1,000,000, pushing the top effective rate to 13.30% for ultra-high earners — the highest state income tax rate in the United States.
Standard deduction and personal exemption credit
- Standard deduction 2025: $5,540 single / married separate · $11,080 MFJ / HoH / QSS.
- Personal exemption credit: $149 per filer (and per spouse) · $461 per dependent. This is a credit, not a deduction, so it reduces your tax dollar-for-dollar.
- Senior exemption (age 65+): additional $149 credit per qualifying person.
California allows you to itemize (Schedule CA 540) or take the standard deduction independently of what you choose on your federal return.
The big refundable credits
CalEITC (California Earned Income Tax Credit)
CalEITC matches the federal EITC for low- and moderate-income working families. For tax year 2025:
- Maximum credit: roughly $3,644 with three or more children.
- Income limits: up to about $31,950 earned income (estimated 2025 figure).
- Refundable — you can get money back even if you owe no tax.
Young Child Tax Credit (YCTC)
If you qualify for CalEITC and have a child under 6, you can claim up to $1,154 extra (2025 estimated).
Foster Youth Tax Credit (FYTC)
Up to $1,154 for current and former foster youth between 18 and 25 who qualify for CalEITC.
Child and Dependent Care Expenses Credit
Up to 50% of your federal credit, depending on AGI.
Deadlines
- April 15, 2026 — California filing and payment deadline for tax year 2025.
- Automatic 6-month extension to October 15, 2026 is granted to anyone (no form needed for the extension itself), but payment is still due April 15.
- California honors the federal IRS extension Form 4868 automatically.
How California compares to no-tax states in 2025
| State | Top state income tax | Notes |
|---|---|---|
| California | 13.30% (with mental health tax) | Highest in US |
| New York | 10.90% | Plus NYC and Yonkers local tax |
| New Jersey | 10.75% | |
| Hawaii | 11.00% | |
| Texas | 0% | No state income tax |
| Florida | 0% | No state income tax |
| Washington | 0% on wages | 7% on long-term capital gains over $270K |
| Nevada, South Dakota, Wyoming, Alaska, Tennessee, New Hampshire | 0% | New Hampshire still taxes interest/dividends through 2024 only |
A single filer earning $120,000 in California pays roughly $8,200 in state income tax. The same filer in Texas or Florida pays $0. That gap is real — but California offsets it with higher wages in many industries, particularly tech and entertainment.
Common mistakes to avoid
- Forgetting to add back state tax refund received in 2024 if you itemized — California does not tax it, but it can affect your federal AGI.
- Missing the CalEITC because your federal AGI was too high while your earned income was low (different limits).
- Not filing Schedule CA 540 when you have any California-only adjustments (such as HSA contributions, which California does not conform to).
- Filing only the federal return when you are a part-year resident with California-source income — you owe Form 540NR.
How USA Taxes handles California
The wizard asks one short question to confirm California residency, then applies the full 2025 FTB bracket table, CalEITC eligibility check, YCTC, personal exemption credit and California-specific adjustments automatically. Your federal Form 1040 and California Form 540 are both generated as IRS / FTB-format PDFs ready to e-file through an authorized provider.
Educational article only. Numbers based on 2025 California Franchise Tax Board guidance and IRS Revenue Procedure 2024-40. Consult a CPA for part-year or non-resident situations.