Whatcom County, Washington Property Taxes
Property Taxes in Whatcom County, Washington
Median Whatcom County effective property tax rate: 0.77%, significantly lower than the national median of 1.02%.
Median Whatcom County home value: $511,606
Median annual Whatcom County tax bill: $3,775, $1,375 higher than the national median property tax bill of $2,400.
How are property taxes in Whatcom County calculated?
Property taxes in Whatcom County are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.
Why does the Whatcom County property tax bill matter? Because the median annual bill is above the national median, even with a lower effective rate, which can make a property tax appeal or exemption review especially valuable.
What can lower a homeowner’s tax burden in Whatcom County? Understanding the county’s property tax system, exemptions, and reduction opportunities can lead to significant savings.
Whether you live in Bellingham or another part of Whatcom County, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Whatcom County, Washington Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
0.77%
Estimate Property Tax Bill
$3,939
$3,656
$774
Average Annual Tax Savings
How Does the Whatcom County Property Tax Calculator Work?
Use this Whatcom County property tax calculator to estimate your annual tax bill. Enter your property's assessed value and our calculator applies Whatcom County's median effective tax rate of 0.77% — drawn from real transactions across the county — to generate your estimate.
Enter your property's estimated assessed value — the value the assessor assigns to your property, typically lower than market value after exemptions. Our calculator uses the median effective rate (actual bills divided by market value), which accounts for typical exemptions and is more accurate than applying the statutory millage rate directly.
Note: your assessed value reflects any exemptions you currently have. Whatcom County's median effective tax rate is lower than Washington's 0.92% and below the national median property tax rate of 1.02%. Rates vary across Whatcom County — scroll down to explore city-level trends and find the rate specific to your area.
If your estimate is higher than expected, Ownwell can protest your Whatcom County assessment. The county's median property tax bill is $3,775, which is $1,375 higher than Washington's median bill.
Property Tax Rates Across Whatcom County, Washington
What Are Effective Property Tax Rates Across Whatcom County?
Local government entities set tax rates, which vary widely across Whatcom County. Each year, the county estimates its budget for public services and divides that total by the assessed value of all taxable property within its jurisdiction.
Below, compare Whatcom County's effective property tax rate to other counties in Washington or the U.S. median of 1.02%.
Whatcom County's median effective rate stands at 0.77%, which is lower than the national median of 1.02%. Within Whatcom County, the highest rate is found in Nooksack at 0.89%, while Deming has the lowest at 0.65%.
These variations reflect differences in local school district levies, Local improvement districts (LIDs) assessments, and special district bonds — which compound the base county rate.
Our median effective property tax rate (tax bill Ă· assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Whatcom County Tax Rate
0.77%
Our median effective property tax rate (tax bill Ă· assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Washington Tax Rate
0.92%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Whatcom County, Washington
| City | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Acme | 0.13% | 0.65% | 0.74% | 0.77% | 0.81% |
| Bellingham | 0.73% | 0.78% | 0.81% | 0.84% | 0.89% |
| Blaine | 0.67% | 0.67% | 0.68% | 0.69% | 0.71% |
| Custer | 0.43% | 0.71% | 0.73% | 0.75% | 0.77% |
| Deming | 0.42% | 0.55% | 0.65% | 0.74% | 0.82% |
| Everson | 0.23% | 0.69% | 0.86% | 0.95% | 1.05% |
| Ferndale | 0.65% | 0.69% | 0.69% | 0.73% | 0.75% |
| Glacier | 0.38% | 0.53% | 0.69% | 0.93% | 1.12% |
| Lummi Island | 0.68% | 0.73% | 0.75% | 0.80% | 0.81% |
| Lynden | 0.65% | 0.71% | 0.71% | 0.74% | 0.77% |
| Maple Falls | 0.25% | 0.57% | 0.72% | 0.82% | 1.04% |
| Nooksack | 0.25% | 0.79% | 0.89% | 0.94% | 0.98% |
| Point Roberts | 0.70% | 0.72% | 0.77% | 0.81% | 0.84% |
| Sedro Woolley | 0.67% | 0.69% | 0.73% | 0.81% | 0.81% |
| Sumas | 0.32% | 0.45% | 0.77% | 0.95% | 1.11% |
| Eliza Island | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
$774
Average Annual Tax Savings
Save on Your Property Taxes and More With Ownwell
Property Tax Assessment Values Across Whatcom County, Washington
When examining property taxes in Whatcom County, understanding the distinction between "market value" and "assessed value" is crucial.
The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The Whatcom County appraisal district estimates the market value for tax purposes.
The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.
Assessment notices:
In Whatcom County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of September.
Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By understanding how assessed and market values are determined, property owners can better navigate their tax responsibilities and the valuation process affecting property taxes in Whatcom County.
For example, the median tax bill in Whatcom County is $3,775, compared with the national median property tax bill of $2,400. Tax bills range significantly across the county, with Bellingham showing the highest median home price at $587,410.
Property Tax Assessment Values Across Whatcom County, Washington
Source: Ownwell
$101,250
$359,643
$618,036
Median Whatcom County Market Value
$511,606
Median Washington Market Value
$501,600
Median United States Market Value
$235,294
Property Tax Assessment Values Across Whatcom County, Washington
| City | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Acme | $35,715 | $121,846 | $312,790 | $500,346 | $657,089 |
| Bellingham | $148,266 | $432,764 | $587,410 | $782,551 | $1,086,177 |
| Blaine | $29,108 | $205,308 | $415,914 | $599,400 | $865,841 |
| Custer | $200,776 | $353,438 | $503,537 | $668,339 | $880,113 |
| Deming | $32,423 | $38,000 | $118,734 | $466,226 | $641,536 |
| Everson | $117,242 | $334,365 | $470,393 | $634,533 | $822,669 |
| Ferndale | $170,614 | $405,286 | $526,928 | $665,676 | $837,333 |
| Glacier | $72,600 | $75,000 | $101,250 | $135,000 | $411,247 |
| Lummi Island | $36,521 | $143,743 | $439,965 | $788,586 | $1,088,811 |
| Lynden | $290,386 | $437,700 | $552,902 | $689,214 | $869,318 |
| Maple Falls | $60,000 | $107,987 | $210,394 | $353,522 | $443,738 |
| Nooksack | $262,821 | $342,356 | $436,437 | $490,097 | $535,919 |
| Point Roberts | $46,464 | $69,520 | $240,415 | $387,287 | $699,158 |
| Sedro Woolley | $20,280 | $48,677 | $330,411 | $458,262 | $641,608 |
| Sumas | $22,542 | $46,342 | $270,520 | $445,913 | $593,627 |
| Eliza Island | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
$774
Average Annual Tax Savings
Save on Your Property Taxes and More With Ownwell
Property Tax Bills Across Whatcom County, Washington
Whatcom County property tax bills are based on a home’s assessed market value and the local tax rate. With a median home price of $511,606, homeowners can see very different bills depending on where they live and how their property is assessed. The county’s tax bills range from $1,793 at the 25th percentile to $5,296 at the 75th percentile, with the 90th percentile reaching $7,363. That is well above the national median property tax bill of $2,400, showing how quickly a higher assessment can raise costs.
What factors are considered when calculating property taxes? Local taxing jurisdictions, the assessed value of the home, and any exemptions all play a role. Cities like Bellingham have the highest median tax bill at $4,724, while Glacier has the lowest at $542.
Ownwell helps homeowners lower property tax bills by reviewing assessments, identifying savings opportunities, and filing appeals when a home is overassessed.
Median Whatcom County Tax Bill
$3,775
Median Washington Tax Bill
$4,512
Median United States Tax Bill
$2,400
Property Tax Bills Across Whatcom County, Washington
| City | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Acme | $116 | $429 | $1,877 | $3,227 | $4,478 |
| Bellingham | $574 | $3,222 | $4,724 | $6,324 | $8,789 |
| Blaine | $175 | $1,121 | $2,735 | $3,995 | $5,806 |
| Custer | $521 | $2,104 | $3,494 | $4,741 | $6,299 |
| Deming | $156 | $227 | $729 | $3,023 | $4,212 |
| Everson | $314 | $2,155 | $3,835 | $5,326 | $6,895 |
| Ferndale | $407 | $2,619 | $3,621 | $4,609 | $5,935 |
| Glacier | $416 | $518 | $542 | $1,256 | $2,070 |
| Lummi Island | $234 | $727 | $3,047 | $5,792 | $8,162 |
| Lynden | $1,001 | $2,984 | $3,905 | $4,874 | $6,233 |
| Maple Falls | $182 | $603 | $1,562 | $2,627 | $3,382 |
| Nooksack | $814 | $2,469 | $3,540 | $4,407 | $4,974 |
| Point Roberts | $326 | $475 | $1,899 | $2,958 | $5,176 |
| Sedro Woolley | $140 | $295 | $2,531 | $3,545 | $4,760 |
| Sumas | $98 | $179 | $1,969 | $3,721 | $5,180 |
| Eliza Island | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
$774
Average Annual Tax Savings
Save on Your Property Taxes and More With Ownwell
Want to lower your Whatcom County property taxes?
How Can I Lower My Property Taxes in Whatcom County?
Looking to reduce your Whatcom County property taxes? Ownwell is the leading property tax appeal company serving Whatcom County. We specialize in helping property owners in the Bellingham area and beyond lower their tax bills by working directly with the Whatcom County Assessor.
Through our tax monitoring service, we collect all necessary information to maximize your tax reductions. We navigate the complexities of the Whatcom County property tax appeal process and identify all available exemptions, so you don't have to.
Whether you are a homeowner, a real estate investor, or an asset manager, our local team at Ownwell has the expertise to assess your current property tax situation and find strategic opportunities for reducing your tax burden.
Property Tax Appeals in Washington
Property tax protests in Whatcom County begin when a homeowner believes the assessed value of a property is too high. The first step is to review the assessment notice and compare it with recent market data, property condition, and similar homes in the area. If the assessment does not reflect the home’s market value, the homeowner can file an appeal before the deadline.
The appeal process usually starts with a formal petition to the county. From there, the case is reviewed and may move to a hearing before the board that listens to appeals. At that hearing, the homeowner can explain why the assessment should be reduced and present supporting evidence. The Tax Assessor’s office may also provide its own information to defend the valuation.
What can happen after an appeal? The board may lower the assessed value, keep it the same, or, in some cases, adjust it in another direction based on the evidence. A lower assessed value can reduce future property taxes, while an unchanged result means the original assessment stands.
Ownwell helps homeowners navigate every step of the appeal process, from reviewing the assessment to preparing a strong case and filing the paperwork correctly. By identifying potential overassessment and organizing the evidence needed for the hearing, Ownwell makes it easier to challenge a property tax bill with confidence.
Exemptions in Washington
Whatcom County homeowners may qualify for several property tax exemption programs that can reduce the amount of tax owed on a primary residence. The most important exemption for many homeowners is the primary residence exemption, which is designed for an owner-occupied home. This type of exemption is especially valuable because it helps lower the assessed value used for property taxes on the home where you live.
Other exemption programs may be available for seniors, people with disabilities, and certain veterans or surviving spouses, depending on eligibility rules. These exemptions are separate from the primary residence exemption and are intended to provide additional relief for homeowners who meet the specific requirements.
Homeowners typically apply through the county assessor’s office and may need to provide proof of ownership, residency, income, age, disability, or veteran status, depending on the exemption.
Ownwell can help homeowners identify which exemptions they may qualify for, understand the application requirements, and stay on top of filing deadlines. By making the process easier and helping ensure the right exemption is applied, Ownwell helps homeowners take full advantage of the property tax relief programs available in Whatcom County.
Available Exemptions
Senior
Disabled
Veteran
Non-Profit
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | October 27 |
| Tax Bill | |
| Issued | February 10 |
| Due Date #1 | April 30 |
| Due Date #2 | October 31 |
Links | |
|---|---|
| Whatcom Tax Assessor | |
| Website | property.spatialest.com |