California · Proposition 13
The property tax subsidy calculator.
Estimate how much you save each year because Prop 13 caps your assessed value at the purchase price plus compounding inflation — not current market value.
Input method
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Annual assessment cap
Annual Prop 13 subsidy
$3,500
Effective rate of 0.86% on market value, versus 1.25% nominal.
Assessed value
$620,000
Tax with Prop 13
$7,750
Tax at market value
$11,250
How market value is split for tax purposes
Assessed & taxed
$620,000
Shielded by Prop 13
$280,000