Coulee City, Grant County, Washington Property Taxes

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Property Taxes in Coulee City, Washington

Median Coulee City, Washington effective property tax rate: 0.86%, significantly lower than the national median of 1.02%, and lower than the Washington state median of 0.92%.
Median Coulee City, Washington home value: $90,585
Median annual Coulee City, Washington tax bill: $739, lower than the national median property tax bill of $2,400.

How are property taxes in Grant County calculated?

Property taxes in Coulee City, 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 Coulee City's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Coulee City, knowing local tax details benefits homeowners and investors.

Last Updated April 13, 2026

Coulee City, Grant County, Washington Property Tax Bill Calculator

Property Assessed Value

$100,000

$1,500,000

$3,000,000

Median Effective Tax Rate

0.86%

Estimate Property Tax Bill

$779

$723

How Does the Coulee City Property Tax Calculator Work?

Use this Coulee City property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Coulee City's median effective tax rate of 0.86% — based on actual property records in Grant 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 Coulee City'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 Coulee City: rates range from 0.86% in 99115 to 0.86% in 99115, 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 Coulee City.

About Coulee City Property Taxes

About Property Taxes in Coulee City, Grant, Washington

Coulee City's median effective property tax rate of 0.86% is lower than the Washington state median of 0.92% and lower than the national median of 1.02%. This rate reflects the Grant 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 Coulee City. Homeowners in the 99115 ZIP code carry a median effective rate of 0.86%, while those in 99115 pay 0.86%. This spread — 0.00 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across Grant County. Understanding which part of Coulee City you live in can make a meaningful difference to your annual tax bill.

Coulee City 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 Coulee City, Grant 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 Coulee City’s effective property tax rate to other cities in Washington and the median property tax rates in Washington and the U.S.

Property Tax Rates Across Coulee City, Grant County, Washington

Source: Ownwell

0.84%

1.06%

1.29%

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 Coulee City Tax Rate

0.86%

Median Effective Grant County Tax Rate

1.12%

Median Effective Washington Tax Rate

0.92%

Median Effective United States Tax Rate

1.02%

Property Tax Rates Across Coulee City, Grant County, Washington

Zip	10th Percentile	25th Percentile	Median Tax Rate	75th Percentile	90th Percentile
99115	0.75%	0.83%	0.86%	0.94%	2.92%

Source: Ownwell

Property Tax Assessment Values Across Coulee City, Grant County, Washington

When examining property taxes in Coulee City, 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 Grant 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 Grant 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 Coulee City.

For example, the median home price in Coulee City is $90,585, with tax bills ranging significantly across the county. 99115 has the highest median home price at $90,585.

Property Tax Assessment Values Across Coulee City, Grant County, Washington

Source: Ownwell

$24,000

$127,565

$231,130

Median Coulee City Market Value

$90,585

Median Grant County Market Value

$160,157

Median Washington Market Value

$501,600

Median United States Market Value

$235,294

Property Tax Assessment Values Across Coulee City, Grant County, Washington

Zip	10th Percentile	25th Percentile	Median Home Price	75th Percentile	90th Percentile
99115	$2,977	$30,135	$90,585	$172,460	$330,351

Source: Ownwell

Property Tax Bills Across Coulee City, Grant County, Washington

Coulee City property tax bills are based on the assessed value of a home and the local tax rates set by Grant County and other taxing authorities. The bill is calculated by applying those rates to the home’s market value after any exemptions or adjustments are considered. Because the tax rate is tied to local budgets and services, two homes with different values can face very different bills.

For homeowners in Coulee City, the size of the tax bill depends on both the home’s value and the tax rate in effect. The median home price is $90,585, and the median property tax bill is $739, which is below the national median property tax bill of $2,400 and below the national median property tax rate of 1.02%. Bills can still vary widely, with the 25th percentile at $250 and the 90th percentile at $2,641. That means property taxes can have a meaningful impact on monthly housing costs and long-term affordability.

Property Tax Bills Across Coulee City, Grant County, Washington

Source: Ownwell

$248

$1,365

$2,482

Median Coulee City Tax Bill

$739

Median Grant County Tax Bill

$1,689

Median Washington Tax Bill

$4,512

Median United States Tax Bill

$2,400

Property Tax Bills Across Coulee City, Grant County, Washington

Zip	10th Percentile	25th Percentile	Median Tax Bill	75th Percentile	90th Percentile
99115	$82	$250	$739	$1,385	$2,641

Source: Ownwell

Don't miss the deadline to appeal!

Dates
Appeal Deadline	July 1
Tax Bill
Issued	February 10
Due Date #1	April 30
Due Date #2	October 31

Links
Grant Tax Assessor
Website	grantwa-taxsifter.publicaccessnow.com

Frequently Asked Property Tax Questions in Coulee City, Washington

How are property taxes calculated in Coulee City, Washington?

Property taxes in Coulee City, Washington are calculated by multiplying your property's assessed value by the applicable tax rate set by local taxing authorities. The assessed value is determined by the county assessor and may differ from your property's market value depending on local assessment ratios and exemptions.

How do I appeal my property taxes in Coulee City, Washington?

To appeal your property taxes in Coulee City, Washington, you typically need to file a formal protest or appeal with your local appraisal district or assessor's office by the stated deadline. You'll need evidence such as comparable sales, a recent independent appraisal, or documentation of property condition issues. Ownwell can handle this entire process for you.

What property tax exemptions are available in Coulee City, Washington?

Common property tax exemptions in Coulee City, Washington include homestead exemptions for primary residences, senior citizen exemptions, veteran exemptions, and disability exemptions. Exemption amounts and eligibility requirements vary by county. Contact your local appraisal district or check Ownwell for details specific to your property.

When are property taxes due in Coulee City, Washington?

Property tax deadlines in Coulee City, Washington vary by county but typically include an assessment notice period in spring or early summer, followed by an appeal deadline, and a tax payment due date in the fall or winter. Check with your county assessor's office for specific dates in your area.

How can Ownwell help reduce my property taxes in Coulee City, Washington?

Ownwell provides professional property tax appeal services in Coulee City, Washington. Our team analyzes your assessment, gathers evidence, files all paperwork, and represents you at hearings — all with no upfront cost. You only pay a percentage of your savings if we successfully lower your tax bill.