Your Complete Guide to Seattle Property Tax

This article was originally published on November 8, 2019 and updated on January 15, 2026.

Seattle’s popularity is skyrocketing, with an ever-increasing number of people eager to call the Emerald City their home.

It makes sense. Seattle has a lot to offer: A booming technology hub, reasonable weather (no, it doesn’t rain every day), and an excellent range of nature and urban amenities right outside your doorstep.

The downside to all of these benefits is that Seattle has become an increasingly expensive place to live. If you’re planning on moving to Seattle, you need to consider many budget factors other than just the cost of your mortgage.

One of the biggest considerations? Seattle property taxes.

Property taxes are assessed based on the value of the house, making this information crucial for anyone buying or selling a house in the Seattle area.

In this article, we’re going to cover everything you need to know about property taxes so you can plan your financing properly and get yourself into this beautiful and exciting area sooner.

How Property Taxes Work

We'll begin by looking at how property taxes are influenced by local government budgets, often determined by a city council.

Local governments, including the county, set annual budgets that determine the property tax levy rate and how the revenue is allocated to fund services such as schools, police, fire departments, and infrastructure.

Higher budget needs typically lead to higher property tax rates. Property tax rates are typically expressed as a percentage of the assessed value of the property.

The assessed value of a property is based on its estimated market value, which is determined by local tax assessors. They consider factors such as the property’s size, location, condition, and recent sales of similar properties in the area.

In Washington State, laws limit how much property taxes can increase each year and cap the total amount of general, non-voter approved taxes at 1%. This legal framework helps protect homeowners from sudden large increases in property taxes and ensures fairness in the system. This assessed value is used to calculate property taxes to ensure every property owner is taxed fairly.

Let’s break this down further.

Understanding the Numbers

Imagine a town with four different houses and a required city budget of $1000. If the total value of all the houses equaled $100,000 then the property tax rate would be one percent.

This means that each person would be required to pay one percent of the value of their home to property taxes. Everyone is paying the same tax rate, but those who have a higher home value will pay a higher fee.

Property tax rates are typically expressed as a percentage, and homeowners can compare their local rate to the state average to understand whether they are paying more or less than other areas in Washington.

But who decides how properties are valued?

The Role of Assessors

In order to determine the monetary value of a home in a particular area, you need the help of the county assessor's office, which is responsible for determining property values.

Assessors at the county assessor's office are responsible for appraising homes and property based on certain qualifying factors. They don’t set the tax rate themselves. Assessors attempt to identify the value of a property with as much accuracy and fairness as possible.

They do this with a very thorough process that involves comparing similar houses, size of the property, age, curb appeal, renovations, and much more. Property assessments by the King County Assessor are conducted at 100% of true market value based on recent sales of comparable properties.

It’s not as simple as comparing two houses sitting next to each other. It takes a home visit to fully understand the value of the property.

This allows home assessors to take every factor into consideration, including location and proximity to desirable amenities such as parks and green spaces, and even current style trends. The assessed value of a property is determined through annual revaluations using market data, with physical inspections occurring at least once every five to six years.

Why Do Taxes Go Up?

From public transportation to affordable housing projects, or expanding floating bridges, the people who govern the city of Seattle are always looking to make improvements and show their constituents progress.

These endeavors to improve life in the city mean that tax rates fluctuate over time.

That’s because these types of projects require funding, and the city gathers its funding from taxes. In addition to property taxes, we all pay sales tax, gas taxes, and other forms of tax for similar purposes, depending on your region.

As we mentioned earlier, property tax increases are limited by law, and King County can only raise property tax revenue by a maximum of 1% annually without voter approval.

However, voter approved levies for specific projects, such as school bonds, can increase property tax bills beyond the typical legal limit. These voter approved levies are authorized by voters to fund projects like schools or parks, and can result in annual increases above the state-imposed cap.

Understanding Property Tax in Seattle

It's important to stay informed about current rates and the date when the year's property taxes are set and available.

Knowing this information will not only help you plan your expenses when considering real estate in Seattle but also give you peace-of-mind knowing where those tax dollars are going.

What Are the Current Tax Rates in Seattle?

Seattle’s recent growth has increased the demand for housing, affecting property taxes as well.

This growth has contributed to the current tax rate in King County being higher than the state average and the national average. To find the exact rate, visit the KingCounty.gov website.

What Are the Taxes Being Used For?

On the county's website, you'll also learn where your property taxes are being spent.

King County supports several programs and agencies that your property tax money will be going towards in the coming year.

This includes

• Local schools, which receive a substantial share of property tax revenue to support education at the local level
• Early childhood education
• Secondary and Post Secondary education
• Public welfare, including battling the homeless crisis in Seattle
• Public transportation such as King County Metro and Light Rail
• Hospital and health resources
• Police, fire, and public utility resources

Property Tax Exemptions in Seattle

No matter what programs your taxes help support, they often represent a significant expense for Seattle homeowners.

However, there are ways to reduce your tax burden if you qualify for certain exemptions.

King County offers a variety of property tax exemptions designed to help eligible residents—especially seniors, disabled veterans, and those with a service-connected disability—manage their annual tax payments. These exemptions can make a real difference, especially given the average property tax rate in King County and the rising costs of homeownership in Seattle.

If you’re a homeowner in King County, it’s worth exploring whether you qualify for a property tax exemption. Not only can these programs lower your yearly property tax bill, but they can also provide peace of mind as you plan your finances. The King County Treasury administers these exemptions, ensuring that eligible homeowners receive the support they need to stay in their homes and communities.

Who Qualifies for Exemptions?

To be eligible, you must own and occupy your property as your primary residence in King County. In addition, your household's combined income must fall below a set threshold, which is updated annually to reflect changes in the cost of living.

Seniors typically qualify if they are at least 61 years old by December 31 of the application year. Disabled veterans and those with a service-connected disability may also be eligible, regardless of age, provided they meet the income and residency requirements.

The King County Treasury reviews each application to ensure homeowners meet all criteria. With the average property tax rate in King County around 0.85%, qualifying for an exemption can lead to substantial savings on your tax payments each year.

If you think you might be eligible, it’s important to review the specific requirements and gather the necessary documentation. Exemptions are designed to help those who need it most, so don’t hesitate to see if you qualify.

How to Apply for Exemptions

Applying for a property tax exemption in Seattle is a straightforward process, but it does require some preparation.

Eligible homeowners must submit an application to the King County Assessor’s Office, providing documentation such as proof of income, age, or disability status, as well as details about the property’s assessed value and location.

The county assessor’s office will carefully review your application to determine if you meet the eligibility requirements.

If your exemption is approved, it will be applied directly to your property tax account, reducing the amount you owe for the current year and potentially future years as well.

Both the city of Seattle and King County offer additional resources and support programs to help homeowners navigate the property tax system.

Taking advantage of available exemptions and credits can make a significant difference in your annual property tax costs and help you stay comfortably in your Seattle home.

How to Budget For Property Taxes

It is important to know the due date for your Seattle property tax payments to avoid penalties and ensure timely payment.

That discussion is all part of knowing how much you can afford in Seattle’s housing market before you make a decision.

Annual taxes are a big part of that. As of the writing of this article, King County property taxes are due in two installments: The first half is to be paid by April 30 and the second half by October 31, with delinquencies applied if not paid by May 1 and November 1 respectively

If you have unpaid property taxes from delinquent years, it's important to pay these off to clear your overdue amount and avoid further penalties.

How To Manage Your Property Tax Rate

While the property tax you have to pay may seem high, you should first break it up into monthly payments. Remember, you aren't required to pay all of that money at once.

If you buy a home priced in the median range for Seattle ($872k), then you would be looking at an estimated $760 a month in taxes.

That seems a lot more digestible, right?

How Are Median Property Taxes Calculated?

Median property taxes are calculated based on the median home price, multiplied by the property tax rate of the county where the home is located.

Since taxes are based on assessed value rather than just a flat fee, your expected bill will scale with increases to your home's worth.

Other Taxes to Factor

If you are still shaking your head at the property tax rate here in Seattle, there are some tax-specific benefits of living in King County you should consider.

Washington is one of the few states that does not collect personal income tax or corporate tax. That's one of the many reasons that industry is so big here in Seattle.

We are home to four of the country's largest corporations including Amazon, Microsoft, Boeing, and Starbucks. There is also a very generous job market and a much higher minimum wage. In Seattle, the minimum wage recently increased to $21.30 an hour. That's almost triple the national rate.

So while you may be spending a bit more in property taxes, you also have a lot more going for you with regard to income and savings.

Make Seattle Your Home with Seattle's Mortgage Broker

Either way, don't let the higher property tax in Seattle scare you away from buying a home in this incredible city. 

There is so much to offer here that keeps the quality of life high.

And at Seattle's Mortgage Broker, we'll help you find the right financing with a monthly payment that accounts for the true cost of taxes.

Contact us today, and get financing in as little as eight days.