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Property tax payment information
How, when, and where to pay King County property taxes.
How to pay property taxes
There are three ways to pay property taxes:
When are tax payments due?
Property taxes are due twice a year. First half taxes must be paid or postmarked by April 30 or the full year tax becomes delinquent on May 1. Second half taxes must be paid or postmarked by October 31 or they become delinquent on November 1.
How do I find my real property parcel or tax account number?
The tax account or parcel number is located on your property tax statement or Assessor's Valuation Change Notice.
If you need help, call the Department of Assessments at 206-296-7300. You can also look up your parcel information by using the eReal Property Search tool.
What to know if your mortgage company pays your property taxes
It is the taxpayer's responsibility to make sure their taxes are paid on time. Visit our Property Tax webpage or call 206-263-2890 to confirm that your taxes are current.
Mortgage companies often use processing companies to make these payments. Processing companies will typically submit payments the last week before the deadline. Contact your mortgage company if your taxes do not show as paid 10 days after the due date.
Where can I find information about my property taxes?
You can request an informational tax statement by calling Treasury Operations at 206-263-2890.
Your tax statements are also available online. To view your statement online, you will need your tax account number or your parcel number.
Pay online
If you know your parcel or tax account number
If you do not know your parcel or tax account number
If you do not know your personal property tax account number, please call 206-263-2844.
What taxes can you pay online?
Real property tax accounts can pay half-year taxes, full-year taxes, and delinquent taxes online. To pay a full year of real property taxes, check both boxes for the two current half-year payments.
Personal property accounts can pay half-year taxes for current accounts only. To pay the entire year of personal property taxes, wait 24 hours after paying the first half. We apologize for the inconvenience, this is a limitation of our online payment system.
Paying delinquent taxes online
Check the boxes for the years you wish to pay. State law allows you to select which delinquent years you want to pay. You must pay the full amount due for each year selected.
For properties in foreclosure, additional costs apply. Call 206-263-2649 to find out the total amount due and to pay these taxes.
Accepted forms of payment for online property tax payments
If you have questions about accepted forms of payment, call us at 206-263-2890 or email e-tax@kingcounty.gov.
Credit card
You may pay with VISA, MasterCard, American Express, or Discover. Payments are processed immediately for the amount of your transaction. Credit card payments have a transaction fee of 2.35% of the total amount charged, with a minimum fee of $2.00.
Debit card
King County accepts VISA debit cards. Debit card transactions are processed immediately for the amount of your transaction. Debit cards have a flat transaction fee of $3.50.
eCheck
King County accepts personal and business checks for online (eCheck) payments. An eCheck, like a pyhsical check, deducts directly from your checking account. By choosing this option, you authorize the bank to electronically withdraw funds for the amount of your tax payment. eChecks have a $0.55 convenience fee.
- Convenience checks drawn on credit card accounts
- Cashier's checks or treasurer's checks
- Travelers checks
- Money orders
- Home equity line of credit (HELOC) checks
- Real estate line of credit (RELOC) checks
- Investment or brokerage account checks
Transaction fees
State law does not allow King County to absorb processing costs or fees associated with electronic payments for property taxes. The payment processor collects these fees. King County does not receive any portion of these fees.
Frequent questions about paying property taxes online
You should receive a payment confirmation email.
Also, the final page in the payment process is a "Payment Confirmation" screen. You will be asked to print this page which includes the following information:
- Customer name
- Payment amount
- Payment date
- Transaction number
If you do not receive the confirmation email or see the confirmation page after submitting payment, please contact us at e-tax@kingcounty.gov.
Payments are effective as of the date and time indicated in the confirmation email sent when your payment is made. A payment will normally clear your checking account or post to your credit card within three business days. It may take up to two weeks for your payment to show up in our records.
It may take up to a week for our records to reflect your property tax payment. However, if your bank rejects the transaction, our system will reverse the "paid" status when we are notifed. It is the responsibility of the taxpayer to confirm their bank has successfully processed the payment.
Pay by mail
You can pay by mail using a personal check sent to the following address.
It is not necessary to include a tax statement with your payment. Be sure to include your tax account number on the memo line of the check.
To make a payment by mail, detach the remittance stub and mail to:
King County Treasury Operations
201 South Jackson Street
Suite 710
Seattle, WA 98104
Pay in person
There are two locations where in person payments can be made, the King County Customer Service Center and a secure drop box.
The office is open Monday through Friday from 8:30 am to 4:30 pm and closed on holidays.
King County Customer Service Center
201 South Jackson Street
Second Floor (East Lobby)
Seattle, WA 98104
ADA accommodations are available upon request
Secure drop box
A secure drop-box marked TREASURY is located inside the security gates on the corner of Second Avenue nearer to South Jackson Street. Access to the drop-box is available Monday through Friday from 8:30 am to 4:30 pm.
Make sure to include your statement coupon or clearly write your tax account number on the check.
Do not deposit cash.
Delinquent taxes and property tax payment plans
Both real and personal property taxes are subject to late charges. Late charges begin on the day following the due date and are calculated based on State law RCW 84.56.020. King County offers payment plans for prior and current year delinquent taxes.
For delinquent first half taxes, monthly late charges are calculated based on the full year amount of tax owed. For second half taxes, monthly charges are calculated for the unpaid second half tax amount. Late charges will continue to acrrue as long as the tax remains delinquent.
You can view or pay delinquent first half real property taxes online before the October 31 deadline for second half taxes.
Delinquent first half personal property taxes paid before October 31 cannot be paid online. You must mail a check to the King County Treasury. Call 206-263-2844 to find out the full amount due.
Property tax payment plans through King County
King County offers monthly payment plans for delinquent prior year(s) taxes. There are conditions and limitations to think about when considering a payment plan through King County:
- There is no reduction of late charges under a payment plan agreement.
- State law does not allow for forgiveness or reduction of delinquent charges when participating in payment plans.
- When calculating a payment plan, we identify the projected payoff date. This date cannot be greater than 12 months. All projected interest charges are factored into the monthly payment.
Payment plans require a formal written agreement between the taxpayer and the King County Treasury. Evergreen Escrow handles monthly payments on behalf of the treasury. There is a $75 setup fee for each payment plan, and monthly payments include a $15 processing fee.
For more information or if you think you are eligle to participate in a payment plan, contact the King County Treasury by email at PaymentPlans@kingcount.gov or call 206-263-2649.
Proerty taxes that are three or more years delinquent may be subject to foreclosure action. Contact the King County Treasury Foreclosure Unit at 206-263-2649 for more details.
Frequent questions about property tax payments
No, we are not able to process property tax payments over the phone. If you need assistance, our staff can talk you through the online payment process.
By state law, extensions cannot be granted due to hardship or any other extenuating circumstance. Payment plans are available for delinquent taxes.
For information about your application, please contact the Department of Assessments at 206-296-3920.
If a mortgage company pays your taxes, the payment information is forwarded to the company per their request.
If a mortgage company does not pay your taxes, you have two options if you have not received your tax statement by March 1.
- Contact Treasury Operations at 206-263-2890 to request a copy
- Request the statement online
Before requesting a new statement, please confirm we have the correct mailing address on file.
To preserve your right to seek a refund in court, you must still pay your taxes. By state law, when you pay your taxes, provide a written statement declaring that you are paying the tax or portion of the tax under protest. State all the reasons why you believe the tax paid is unlawful or excessive.
Yes. You will need the parcel number to pay the taxes online or by check. For checks, include the parcel number on the memo line.
Consult an income tax professional on the federal tax consequences of any non-ad valorem charge listed on your property tax statement.
Depending on the location of your property, other charges may include:
- A surface water management charge
- City of Seattle drainage charge
- A fire protection fee
- King Conservation District (KCD) fee
- Noxious weed fee
No. Property tax collection dates are set by state law. County treasurers are not allowed to collect property taxes until the year that they are due.
Contact information
Property tax information and customer service
Phone: 206-263-2890
Email: PropertyTax.CustomerService@kingcounty.gov
Mobile homes and commerical personal property
Phone: 206-263-2844
Email: Treasury.PersonalProperty@kingcounty.gov
Tax foreclosures
Phone: 206-263-2649
Email: TaxForeclosures@kingcounty.gov
Maintenance Assessment Management Systems and Local Improvement Districts
Phone: 206-263-1893
Email: mams.lid@kingcounty.gov