Plymouth, Benton County, Washington Property Taxes
Property Taxes in Plymouth, Washington
Median Plymouth, Washington effective property tax rate: 0.89%, significantly lower than the national median of 1.02%, and lower than the Washington state median of 0.92%.
Median Plymouth, Washington home value: $140,150
Median annual Plymouth, Washington tax bill: $934, lower than the national median property tax bill of $2,400.
How are property taxes in Benton calculated?
Property taxes in Plymouth, 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 Plymouth's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Plymouth, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Plymouth, Benton County, Washington Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
0.89%
Estimate Property Tax Bill
$1,247
$1,157
How Does the Plymouth Property Tax Calculator Work?
Use this Plymouth property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Plymouth's median effective tax rate of 0.89% — based on actual property records in Benton County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local appraisal 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 Plymouth'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 Plymouth: rates range from 0.89% in 99346 to 0.89% in 99346, primarily due to differences in school district levies and local assessment districts.
For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Plymouth.
About Plymouth Property Taxes
About Property Taxes in Plymouth, Benton, Washington
Plymouth’s median effective property tax rate of 0.89% is lower than the Washington state median of 0.92% and lower than the national median of 1.02%. This rate reflects the Benton 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 Plymouth. Homeowners in ZIP code 99346 carry a median effective rate of 0.89%, while those in the same ZIP code also pay 0.89%. This reflects how school district boundaries and local assessment districts are drawn across Benton County. Understanding which part of Plymouth you live in can make a meaningful difference to your annual tax bill.
Plymouth homeowners who believe their assessed value is too high can file a formal appeal with the local Tax Assessor before July 1, 2026.
If your estimated bill 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 Plymouth, Benton 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 Plymouth'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 ÷ 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 Plymouth Tax Rate
0.89%
Our median effective property tax rate (tax bill ÷ 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 Benton County Tax Rate
0.93%
Median Effective Washington Tax Rate
0.92%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Plymouth, Benton County, Washington
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 99346 | 0.88% | 0.89% | 0.89% | 0.91% | 0.92% |
Source: Ownwell
Property Tax Assessment Values Across Plymouth, Benton County, Washington
When examining property taxes in Plymouth, 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 Benton 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 Benton County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of the month when notices are sent.
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 Plymouth.
For example, the median home price in Plymouth is $140,150, with tax bills ranging significantly across the county. 99346 has the highest median home price at $140,150.
Property Tax Assessment Values Across Plymouth, Benton County, Washington
Source: Ownwell
$98,135
$491,130
$884,125
Median Plymouth Market Value
$140,150
Median Benton County Market Value
$347,060
Median Washington Market Value
$501,600
Median United States Market Value
$235,294
Property Tax Assessment Values Across Plymouth, Benton County, Washington
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 99346 | $33,805 | $57,690 | $140,150 | $231,472 | $313,810 |
Source: Ownwell
Property Tax Bills Across Plymouth, Benton County, Washington
How are property tax bills calculated in Plymouth?
Property tax bills in Plymouth are based on the assessed value of a home and the local tax rate set by taxing authorities. For a home with a median market value of $140,150, the bill is determined by multiplying the assessed value by the applicable rate, which reflects local budgets and services.
Several factors affect the final amount, including the home’s assessed value, the tax rate, and any local levies. In Benton County, property tax bills can vary widely, with the 25th percentile at $402 and the 75th percentile at $2,000. The 90th percentile reaches $2,689, showing how higher-value or differently assessed homes can face much larger bills.
For homeowners, this means property taxes can be a significant ongoing cost that changes with market conditions and local spending decisions. Even within the same city, two similar homes may owe different amounts if their assessed values differ.
Median Plymouth Tax Bill
$934
Median Benton County Tax Bill
$3,052
Median Washington Tax Bill
$4,512
Median United States Tax Bill
$2,400
Property Tax Bills Across Plymouth, Benton County, Washington
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 99346 | $259 | $402 | $934 | $2,000 | $2,689 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | July 1 |
Links | |
|---|---|
| Benton Tax Assessor | |
| Website | propertysearch.co.benton.wa.us |