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Both owners and tenants pay taxes on the properties in which they live and work. Taxes are based on the value of the property, as determined by the King County Assessor's Office.

In Washington, property taxes are a source of income for the state, counties, cities and other taxing districts (i.e. schools, fire department, etc.) to pay for community services. For this reason, property taxes are taken very seriously. The consequences for not paying them will not only harm you personally, but will leave your community without the necessary resources to operate efficiently.

Tax Terms

Key terms you will need to know for this chapter include:

  • Assess : To place a value on property for tax purposes.

  • Assessment Level: The rate at which property is assessed.

  • Assessed Valuation or Value: The result of multiplying a property's fair market value with its assessment level.

  • Equalized Assessed Valuation or Value: The result of multiplying the assessed valuation of a property with the equalization factor.

  • Equalization Factor: A factor determined each year by the Washington Department of Revenue to ensure assessments are equal between all counties in the state. This is also known as the "multiplier."
    Levy: The total amount of funds requested by a taxing district.

  • Property Tax: The local tax on the value of real property, land, buildings and homes. These taxes are a major revenue source for funding local services such as schools, libraries, health services, public works and parks.

  • Tax: A mandatory payment to the government, used to fund services.

  • Tax Base: The number of resources (i.e. buildings, parcels of land, etc.) available for taxation.

  • Tax Code: The specific geographic area taxed by various taxing bodies/districts (i.e. school district, forest preserve, police, sanitation, etc.)

  • Taxing District: Local government agencies authorized to tax property within their geographic boundaries. Examples: school districts, park districts, police and fire departments and municipalities.

Tax Cycle

Assessing property taxes is a complicated process that begins with the tax assessor and ends with the taxpayer. Various government agencies play specific roles at each stage. The cycle can be divided into four steps, which we will discuss in the remainder of this section.

Placing an Assessment
Placing an assessment on a property is a multi-step procedure that includes the appeals process.

The assessment procedure begins with establishing land value. Appraisal theory and state law require land to be valued as if vacant. This value is determined by analyzing sales of comparable bare land. The next step is to study sales and market trends of improved (developed or built-on) properties in a selected area. This sales analysis is used to determine total market value based on square footage, year built and other characteristics of the property. From this total value, we subtract the amount determined for land. The balance is allocated to improvements.

Real property valuations are made by the staff of accredited real estate appraisers from the King County Department o f Assessments. The total valuation represents 100% of fair market value. Market value is the amount of money a buyer, willing but not obligated to buy, would pay to a seller willing but not obligated to sell. For residential parcels, fair market value is determined by analyzing recent sales of comparable properties in the same area. Commercial properties also may be appraised using this method or by using the income or cost approach. The appraisal method used will be the one that offers the best evidence of market value.

The Assessor values property on a cyclical basis according to a revaluation plan filed with the state Department of Revenue (external link). At a minimum, real property must be revalued each four years. King County began an annual revaluation program in 1995.

When any change in valuation is made, you will be mailed a Value Change Notice. This notice shows your old and new total values and a division of value between land and improvements. (Improvement refers to buildings, structures or enhancements to bare land.)

Property Tax Valuation Disputes:

If you feel a mistake has been made in valuing your property, contact 

Public Information Hours:

8:30 - 4:30 Monday, Tuesday, Wednesday, Friday

9:30 - 4:30 Thursday

You can also appeal to the King County Board of Equalization/Appeals. To do this, you must file a completed petition form within 60 days of the mail date on the front of the Value Change Notice you receive or through July 1 of the year before the tax is due, whichever is later. The Board of Equalization/appeals is independent of the Department of Assessments. You must present proof that the Assessor has erred in the appraisal. The information you present to the board should include sales of comparable properties in your area. You should also submit other pertinent information that demonstrates the difference between the Assessor's value and the correct value.

If you do not agree with the county board's decision, you may appeal to the State Board of Tax Appeals (external link). You must again present proof that the Assessor has erred in the appraisal.

Information Needed to Appeal

To appeal a valuation to the King County Board of Equalization/Appeals, you must show the Assessor has erred in the appraisal. You must clearly show that the assessed value does not reflect market value. The evidence should consist of sales of comparable properties in your area or information on conditions not known to the Assessor.

You must supply adequate documentation to support your claim if your appeal is based on conditions of which the appraisers were not aware -- for example, the land will not percolate or is not suitable for building. You also may request copies of comparable sales information used to value your property.

You do not have to be represented by an attorney to appeal your property assessment.

You may appeal the county board's decision to the Washington Board of Tax Appeals. Like the county board, the state board considers only questions of value. Property owners also can pursue litigation in court.

Questions about appeal procedures can be directed to the King County Board of Equalization/appeals or the Department of Assessments.

Property Taxes

Determining the Amount of Property Tax

The costs of state and local government determine how much property tax will be levied. These include operating costs of schools, city and county government and other taxing districts such as the Port of Seattle, library, hospital, fire and sewer districts. A large part of each property tax dollar goes to pay off bonds for such capital costs as school buildings and other public projects.

Establishing Tax Levies

The state constitution, statutory levy limits set by the legislature and excess levies approved by the voters are used to calculate the total property tax levy. The tax rate on your property is the figure resulting from dividing the dollar amount required for the taxing district by the total value of property within the district and then adding up the rates of the various districts in which your property is located. The assessed value of your property, multiplied by the combined rate, produces a tax amount which is your fair share of the total property tax levy in your area. The King County Treasurer issues tax statements and taxes are paid to the King County Treasury Operations.

Calculating Your Taxes

You can estimate what your property taxes will be if you know the "assessed value" of your property and the tax levy rate.

For example, if the assessed value of your property is $200,000 and the levy rate is $13 per thousand dollars of value:

VALUE  200 ($200,000 divided by 1,000)

x LEVY RATE  x $13

TAXES   = $2,600 estimated tax

Resources for Tax Payers

King County has a website dedicated to providing information about taxes and services to tax payers at:

Other Tax Information in Washington State:

The primary income for the State of Washington is Retail Sales Tax which if you are selling art, wares, or tickets you will need to collect sales tax. For more information, visit:

If your organization is registered as a non-profit organizations 501C3 there are several tax exemptions which you are eligible, information can be found from the Washington State Department of Revenue at:

Additionally, the Shunpike helps all kinds of small and mid-sized arts groups better manage the business aspects of art. In doing so, we aim to create a vibrant and diverse local arts community where arts groups of all sizes can thrive.

Tax Terms
Tax Cycle
Property Taxes
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