Rate Breakdown

Property taxes in Whatcom County are calculated by multiplying the assessed value (minus exemptions) by the total local millage rate.

How Property Tax Works in Whatcom County

Property taxes in Whatcom County are calculated based on the assessed value of your property and the millage rates set by local taxing districts. The Whatcom County Assessor's Office determines the assessed value of your property annually, reflecting its market value as of January 1st. This value is then multiplied by the combined millage rates (tax rates per $1,000 of assessed value) set by the county, cities, school districts, and other local entities. The total millage rate varies depending on your property's location within the county. Property tax bills are typically mailed in February and are payable in two installments.

Available Exemptions

Whatcom County offers several property tax exemptions to eligible homeowners. These include:

• Homestead Exemption: Provides partial tax relief for primary residences.
• Senior Citizen/Disabled Person Exemption: Reduces property taxes for homeowners aged 61 or older or those with disabilities who meet income requirements.
• Veteran Exemption: Offers tax relief for honorably discharged veterans with service-related disabilities or surviving spouses.
• Nonprofit Organization Exemption: Exempts properties owned by qualifying nonprofit organizations.

To apply for exemptions, contact the Whatcom County Assessor's Office and submit the required documentation.

Payment Schedule & Deadlines

Property taxes in Whatcom County are due in two installments:

• First Half: Due by April 30th.
• Second Half: Due by October 31st.

If you miss a deadline, penalties and interest will be applied to unpaid balances. Payments can be made online, by mail, or in person at the Whatcom County Treasurer's Office. Partial payments are accepted, but the full amount must be paid by the final deadline to avoid penalties.

Appealing Your Assessment

If you believe your property assessment is inaccurate, you can appeal to the Whatcom County Board of Equalization. Here's how:

• Step 1: File an appeal within 30 days of the assessment notice date (typically July).
• Step 2: Provide supporting evidence, such as recent sales of comparable properties or an independent appraisal.
• Step 3: Attend the hearing to present your case.

If unsatisfied with the Board's decision, you may appeal to the Washington State Board of Tax Appeals. For more information, visit the Whatcom County Assessor's Office website or contact them directly.