Union Gap, Yakima County, Washington Property Taxes

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Property Taxes in Union Gap, Washington

Median Union Gap, Washington effective property tax rate: 0.91%, significantly lower than the national median of 1.02%, and slightly lower than the Washington state median of 0.92%.
Median Union Gap, Washington home value: $113,500
Median annual Union Gap, Washington tax bill: $1,271, lower than the national median property tax bill of $2,400.

How are property taxes in Yakima calculated?

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

Last Updated April 13, 2026

Union Gap, Yakima County, Washington Property Tax Bill Calculator

Property Assessed Value

$100,000

$1,500,000

$3,000,000

Median Effective Tax Rate

0.91%

Estimate Property Tax Bill

$1,033

$958

How Does the Union Gap Property Tax Calculator Work?

Use this Union Gap property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Union Gap's median effective tax rate of 0.91% — based on actual property records in Yakima 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 Union Gap'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 Union Gap: rates range from 1280.00% in 98903 to 1280.00% in 98903, 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 Union Gap.

About Union Gap Property Taxes

About Property Taxes in Union Gap, Yakima, Washington

Union Gap's median effective property tax rate of 0.91% is lower than the Washington state median of 0.92% and lower than the national median of 1.02%. This rate reflects the Yakima 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 Union Gap. Homeowners in the 98903 ZIP code carry a median effective rate of 0.91%, while those in 98903 pay 0.91%. This spread — 0.00 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across Yakima County. Understanding which part of Union Gap you live in can make a meaningful difference to your annual tax bill.

Union Gap 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 Union Gap, Yakima 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 Union Gap'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 Union Gap, Yakima County, Washington

Source: Ownwell

0.88%

1.07%

1.27%

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 Union Gap Tax Rate

0.91%

Median Effective Yakima County Tax Rate

1.05%

Median Effective Washington Tax Rate

0.92%

Median Effective United States Tax Rate

1.27%

Property Tax Rates Across Union Gap, Yakima County, Washington

Zip	10th Percentile	25th Percentile	Median Tax Rate	75th Percentile	90th Percentile
98903	0.69%	0.81%	0.91%	1.09%	1.28%
98901	N/A	N/A	N/A	N/A	N/A
98932	N/A	N/A	N/A	N/A	N/A
98937	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

Property Tax Assessment Values Across Union Gap, Yakima County, Washington

When examining property taxes in Union Gap, 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 Yakima 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 Yakima County, assessment notices are sent in September 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. For Union Gap, the median home price is $113,500, with tax bills ranging significantly across the county. ZIP code 98903 has the highest median home price at $116,900.

Property Tax Assessment Values Across Union Gap, Yakima County, Washington

Source: Ownwell

$116,900

$223,000

$329,100

Median Union Gap Market Value

$113,500

Median Yakima County Market Value

$236,000

Median Washington Market Value

$501,600

Median United States Market Value

$274,101

Property Tax Assessment Values Across Union Gap, Yakima County, Washington

Zip	10th Percentile	25th Percentile	Median Home Price	75th Percentile	90th Percentile
98903	$5,000	$25,400	$116,900	$163,600	$215,500
98901	N/A	N/A	N/A	N/A	N/A
98932	N/A	N/A	N/A	N/A	N/A
98937	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

Property Tax Bills Across Union Gap, Yakima County, Washington

Property tax bills in Union Gap are calculated by applying local tax rates to a home’s assessed value, which is based on the market value of the property. Local taxing authorities set the rates, and the final bill reflects both the value of the home and the combined levies in the area.

With a median home price of $113,500, homeowners in Union Gap often see bills that vary widely depending on where they live and how their property is assessed. The 25th percentile tax bill is $222, while the 75th percentile is $1,620 and the 90th percentile reaches $2,021. The median tax bill in zip code 98903 is $1,280.

These taxes help fund local services, but they also affect monthly housing costs and long-term affordability for homeowners.

Property Tax Bills Across Union Gap, Yakima County, Washington

Source: Ownwell

$1,280

$2,498

$3,715

Median Union Gap Tax Bill

$1,271

Median Yakima County Tax Bill

$2,551

Median Washington Tax Bill

$4,512

Median United States Tax Bill

$3,209

Property Tax Bills Across Union Gap, Yakima County, Washington

Zip	10th Percentile	25th Percentile	Median Tax Bill	75th Percentile	90th Percentile
98903	$100	$230	$1,280	$1,624	$2,048
98901	N/A	N/A	N/A	N/A	N/A
98932	N/A	N/A	N/A	N/A	N/A
98937	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

Don't miss the deadline to appeal!

Dates
Appeal Deadline	November 19
Tax Bill
Issued	February 10
Due Date #1	April 30
Due Date #2	October 31

Links
Yakima Tax Assessor
Website	www.yakimacounty.us

Frequently Asked Property Tax Questions in Union Gap, Washington

How are property taxes calculated in Union Gap, Washington?

Property taxes in Union Gap, 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 Union Gap, Washington?

To appeal your property taxes in Union Gap, 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 Union Gap, Washington?

Common property tax exemptions in Union Gap, 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 Union Gap, Washington?

Property tax deadlines in Union Gap, 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 Union Gap, Washington?

Ownwell provides professional property tax appeal services in Union Gap, 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.