How California Property Tax Works
California property tax is governed by Proposition 13 (passed in 1978), one of the most taxpayer-friendly tax laws in the United States. Under Prop 13, your home's assessed value can only increase by a maximum of 2% per year, regardless of how much your home's market value has risen.
This means long-term California homeowners often pay a fraction of what new buyers pay in the same neighborhood. For example, a home bought in 1990 at $200,000 may now be worth $1,200,000 — but its assessed value for tax purposes may only be around $400,000.
Proposition 13 Rules
- 2% annual cap: Assessed value increases are capped at 2% per year, even in hot real estate markets.
- Reassessment on sale: When a property is sold, it is reassessed at current market value — the new owner will see a significant tax increase.
- New construction: Home additions or major renovations may trigger a partial reassessment.
- Disaster relief: If your home is damaged by disaster, you can apply for reassessment at the lower damaged value.
California County Tax Rates (2025)
The following table shows average effective property tax rates for major California counties. Remember: your actual rate depends on your purchase date due to Prop 13.
| County | Avg. Effective Rate | Avg. Annual Tax | Avg. Home Value |
|---|---|---|---|
| Los Angeles | 0.68% | $4,200 | $620,000 |
| San Diego | 0.73% | $4,800 | $660,000 |
| Orange | 0.65% | $4,100 | $630,000 |
| Santa Clara | 0.72% | $6,500 | $900,000 |
| Alameda | 0.78% | $5,800 | $750,000 |
| Sacramento | 0.81% | $3,600 | $445,000 |
| Riverside | 0.95% | $3,900 | $410,000 |
| San Bernardino | 0.96% | $3,400 | $355,000 |
| Contra Costa | 0.88% | $5,200 | $590,000 |
| Fresno | 0.88% | $2,900 | $330,000 |
Homestead Exemption in California
California does not have a traditional homestead exemption that directly reduces your assessed value. Instead, it offers a Homestead Exemption Protection that protects a portion of your home equity from creditors in bankruptcy or lawsuits.
However, California offers other valuable tax-saving programs:
- Prop 60/90: Seniors (55+) can transfer their low Prop 13 assessed value to a replacement home (within same county or participating counties).
- Prop 19: Inherited property tax base transfer rules were restricted starting 2021 — consult a tax professional.
- Veteran Exemption: Disabled veterans may qualify for a property tax exemption of up to $196,260 (2025 adjusted).
How to Lower Your California Property Tax
1. File an Assessment Appeal
If you believe your assessed value is higher than market value, you can file an appeal with your county Assessment Appeals Board. The deadline is typically September 15 for most counties. Success rate is approximately 40-50% for well-prepared cases.
2. Check for Missed Exemptions
Verify you are receiving all eligible exemptions: veteran, disability, and senior exemptions. Contact your county assessor's office to confirm.
3. Prop 13 Portability (Seniors)
If you are 55 or older, you may be able to transfer your low tax base to a new home under Prop 60 (same county) or Prop 90 (participating counties). This can save tens of thousands over your homeownership period.
4. Avoid Triggering Reassessment
Be careful with home improvements. In California, adding square footage or making significant structural changes can trigger a reassessment. Cosmetic improvements (paint, flooring) typically do not.
Property Tax Payment in California
California property tax is paid in two installments:
- Installment 1: Due November 1, delinquent after December 10
- Installment 2: Due February 1, delinquent after April 10
Late payments incur a 10% penalty plus a $25 administrative fee. Interest accrues at 1.5% per month on delinquent amounts.
California vs. Other States
California's property tax system is unique. Compared to other states:
- vs. Texas: Texas has no state income tax but much higher property tax rates (1.66% avg). New California residents from Texas often see their property tax bill increase.
- vs. New York: New York has higher rates (1.60% avg) but also offers more generous homestead programs.
- vs. Florida: Florida has similar rates but a much more generous homestead exemption ($50,000+).
Frequently Asked Questions — California
Does California have a state income tax?
Yes, California has the highest state income tax in the US, with rates up to 13.3% for high earners. This partially offsets the moderate property tax burden for some residents.
Can I remove Proposition 13 protection?
No — Prop 13 protection is automatic and continues as long as you own the home. It only ends when the property is sold or substantially rebuilt.
Are property taxes deductible in California?
Yes, California property tax is fully deductible on your federal income tax return (Schedule A). However, the $10,000 SALT cap (state and local tax deduction limit) may limit the benefit for high-income homeowners.
What is the "Supplemental Tax Bill"?
When you buy a home in California, you will receive a supplemental tax bill in addition to the regular bill. This covers the difference between the previous owner's assessed value and your new assessed value, prorated for the remaining year.
Calculate Your California Property Tax
Use our free calculator to estimate your 2025 California property tax based on your home value and county tax rate.
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