First-half property tax payments are due on Wednesday, April 30, 2025

First-half property tax payments are due on Wednesday, April 30, 2025 for property owners who pay taxes themselves and not through a mortgage lender. 

You can pay your taxes online using the county's safe, secure eCommerce system.

Taxpayers can receive services via:

• Phone: Real Property Tax (Real Estate) 206-263-2890
• Phone: Mobile Homes and Personal Property Commercial Property Tax 206-263-2844
• Email: propertytax.customerservice@kingcounty.gov
• In Person: at the King County Customer Service Center located at the King Street Center in downtown Seattle, 201 S. Jackson St., 2nd Floor. Hours of operation are 8:30am-4:30pm, Monday through Friday.

Other helpful links:

• Common questions: Frequently Asked Questions (FAQ)
• How your property tax bill is calculated and where your tax dollars go: 2025 Taxes
• Senior Citizen and Disabled Exemption information: Senior Exemption Portal
• Other payment methods