San Mateo County Property Tax Calculator
Locality estimate page for San Mateo County, California. Use this county/locality rate for faster screening, then confirm parcel-specific details with your local tax authority.
County/Locality Effective Rate
0.61%
State Effective Rate
0.70%
Sample Annual Tax Difference
-$383
Median Home Value (ACS)
$1,559,600
Median Annual Tax Bill (ACS)
$9,519
Owner-Occupied Households
154,607
The typical owner-occupied home in San Mateo County is valued at $1,559,600 with a median real estate tax bill of $9,519 per year — an effective rate of 0.61%. Both figures come from the same ACS release, so the ratio is an estimate rather than an aggregate of individual bills.
State Mortgage Context: California
Some counties follow standard FHA limits while higher-cost counties may qualify for elevated FHA limits.
State Effective Tax Rate
0.70%
FHA 1-Unit Floor
$541,287
FHA 1-Unit Ceiling
$1,249,125
In San Mateo County, California, the current county-level estimate is 0.61%, or approximately $2,440 annually on a $400,000 home.
How to Use This County Estimate
Step 1
Enter your property value and assessment assumptions.
Step 2
Apply exemptions that may reduce taxable value.
Step 3
Compare county/locality estimate against statewide fallback.
San Mateo County Property Tax Snapshot
Estimated effective rate: 0.61% · vs California: 0.70% · vs national benchmark: 0.90%
| Home value | Estimated annual tax | Estimated monthly tax |
|---|---|---|
| $250,000 | $1,525 | $127 |
| $400,000 | $2,440 | $203 |
| $500,000 | $3,050 | $254 |
| $750,000 | $4,575 | $381 |
| $1,000,000 | $6,100 | $508 |
Compare Nearby Property Taxes
- San Mateo County0.61%
- Monterey County0.63%
- Humboldt County0.64%
- Santa Cruz County0.64%
- Santa Barbara County0.65%
- Marin County0.66%
- Orange County0.66%
Source Transparency
Source: U.S. Census Bureau, ACS 5-Year Estimates (B25103 / B25077)
View sourceLast updated: August 2026
Estimates only. Confirm parcel-specific amounts with the official local taxing authority.
Need Statewide Context?
Visit California mortgage snapshot or return to the national calculator hub.