Property Taxes in Keller, Washington
Median Keller, Washington effective property tax rate: 0.77%, significantly lower than the national median of 1.02%, and lower than the Washington state median of 0.92%.
Median Keller, Washington home value: $73,200
Median annual Keller, Washington tax bill: $608, $1,792 lower than the national median property tax bill of $2,400.
How are property taxes in Ferry calculated?
Property taxes in Keller, Washington 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.
Understanding Keller's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Keller, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
How Does the Keller Property Tax Calculator Work?
Use this Keller property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Keller's median effective tax rate of 0.77% — based on actual property records in Ferry County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local assessment district uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Keller's median effective rate across all local levies, providing a more accurate estimate than applying a single county millage rate.
Your bill may vary by ZIP code within Keller: rates are 0.77% in 99140, with no variation shown across the area, based on the available property records.
For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Keller.
About Keller Property Taxes
About Property Taxes in Keller, Ferry, Washington
Keller’s median effective property tax rate of 0.77% is lower than the Washington state median of 0.92% and lower than the national median of 1.02%. This rate reflects the Ferry County base levy combined with local school district levies and Local improvement districts (LIDs) that vary by subdivision throughout the city.
Property tax rates are not uniform across Keller. Homeowners in the 99140 ZIP code carry a median effective rate of 0.77%, while those in the same ZIP code pay 0.77%. This spread reflects how school district boundaries and local assessment districts are drawn across Ferry County. Understanding which part of Keller you live in can make a meaningful difference to your annual tax bill.
Keller homeowners who believe their assessed value is too high can file a formal appeal with the local Tax Assessor before the July 1, 2026 deadline each year.
If your estimated bill above seems higher than expected, Ownwell can review your assessment and protest on your behalf. You only pay if we save you money.
Property Tax Rates Across Keller, Ferry County, Washington
As noted earlier, local government entities set tax rates, which can vary widely within a state.
Why? Because annually, each county estimates its required budget to provide services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate.
While there are votes and laws involved in setting tax rates and budgets, in a nutshell, this is the annual process.
Below, you can compare Keller's effective property tax rate to other cities in Washington and the median property tax rates in Washington and the U.S.
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 Keller 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 Ferry County Tax Rate
0.90%
Median Effective Washington Tax Rate
0.92%
Median Effective United States Tax Rate
1.27%
Property Tax Rates Across Keller, Ferry County, Washington
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 99140 | 0.74% | 0.75% | 0.77% | 0.80% | 0.83% |
Source: Ownwell
Property Tax Assessment Values Across Keller, Ferry County, Washington
When examining property taxes in Keller, Washington, 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 Ferry County assessor 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 Ferry County, assessment notices are sent in May each year. They'll typically reach your mailbox by the middle of May.
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 providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in Keller.
For example, the median home price in Keller is $73,200, with tax bills ranging significantly across the county. 99140 has the highest median home price at $73,200.
Property Tax Assessment Values Across Keller, Ferry County, Washington
Source: Ownwell
$73,000
$121,650
$170,300
Median Keller Market Value
$73,200
Median Ferry County Market Value
$104,150
Median Washington Market Value
$501,600
Median United States Market Value
$274,101
Property Tax Assessment Values Across Keller, Ferry County, Washington
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 99140 | $7,600 | $40,200 | $73,200 | $142,700 | $264,100 |
Source: Ownwell
Property Tax Bills Across Keller, Ferry County, Washington
How are property tax bills calculated in Keller?
Property tax bills in Keller are based on the assessed value of a home, which is then multiplied by the local tax rate. The assessed value is influenced by the market value of the property and any exemptions that may apply. For homeowners, this means the tax bill can change when home values rise or when local taxing rates are adjusted.
What factors affect the bill?
The median home price in Keller is $73,200, and the median property tax bill is $608. That is well below the national median property tax bill of $2,400 and also below the national median property tax rate of 1.02%. Bills can vary widely, with the 25th percentile at $360, the 75th percentile at $1,101, and the 90th percentile at $2,116.
How does this affect homeowners?
Higher assessed values usually mean higher property tax bills, while exemptions can help reduce what homeowners owe. In Keller, the range of tax bills shows that even homes in the same area can face very different costs depending on their assessed value and tax treatment.
Median Keller Tax Bill
$608
Median Ferry County Tax Bill
$856
Median Washington Tax Bill
$4,512
Median United States Tax Bill
$3,209
Property Tax Bills Across Keller, Ferry County, Washington
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 99140 | $190 | $360 | $608 | $1,101 | $2,116 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | July 1 |
Links | |
|---|---|
| Ferry Tax Assessor | |
| Website | ferrywa-taxsifter.publicaccessnow.com |