Whatcom County Property Tax Calculator
Locality estimate page for Whatcom County, Washington. Use this county/locality rate for faster screening, then confirm parcel-specific details with your local tax authority.
County/Locality Effective Rate
0.70%
State Effective Rate
0.75%
Sample Annual Tax Difference
-$213
Median Home Value (ACS)
$585,800
Median Annual Tax Bill (ACS)
$4,087
Owner-Occupied Households
59,904
The typical owner-occupied home in Whatcom County is valued at $585,800 with a median real estate tax bill of $4,087 per year — an effective rate of 0.70%. Both figures come from the same ACS release, so the ratio is an estimate rather than an aggregate of individual bills.
State Mortgage Context: Washington
Some counties follow standard FHA limits while higher-cost counties may qualify for elevated FHA limits.
State Effective Tax Rate
0.75%
FHA 1-Unit Floor
$541,287
FHA 1-Unit Ceiling
$1,249,125
In Whatcom County, Washington, the current county-level estimate is 0.70%, or approximately $2,800 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.
Whatcom County Property Tax Snapshot
Estimated effective rate: 0.70% · vs Washington: 0.75% · vs national benchmark: 0.90%
| Home value | Estimated annual tax | Estimated monthly tax |
|---|---|---|
| $250,000 | $1,750 | $146 |
| $400,000 | $2,800 | $233 |
| $500,000 | $3,500 | $292 |
| $750,000 | $5,250 | $438 |
| $1,000,000 | $7,000 | $583 |
Compare Nearby Property Taxes
- Whatcom County0.70%
- Clallam County0.72%
- Island County0.67%
- Kitsap County0.77%
- Snohomish County0.77%
- Benton County0.78%
- Skagit County0.79%
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 Washington mortgage snapshot or return to the national calculator hub.