Property owners in King County who pay their property taxes themselves, rather than through their mortgage lender, have until Tuesday, Oct. 31 to pay the second half of their 2017 property taxes. After that date, interest charges and penalties will be added to the tax bill.

To make the process easier, King County provides several ways for taxpayers to pay their taxes quickly and conveniently. Tax payments can be made:

• Online using King County’s convenient, secure payment application available at www.kingcounty.gov/propertytax. Taxpayers may pay accounts online with a credit card or an electronic debit (eCheck) from a checking account.

• By mail if postmarked no later than Oct. 31. Taxpayers should include their tax statement and write the property tax account number on their check or money order. Cash should not be sent through the mail.

• In person at Treasury Operations, sixth floor of the King County Administration Building, 500 Fourth Ave. in Seattle. Hours are Monday through Friday, 8:30 a.m. to 4:30 p.m. On Oct. 31, Treasury Operations will be open until 5 p.m. Payments can be made using cash, check, and credit or debit card.

• At King County Community Service Centers if paid by check for the exact amount due. Taxpayers can find the address, phone number, and operating hours of the center in their area by visiting www.kingcounty.gov/CSC.

The online option provides immediate payment confirmation for current year or delinquent year(s) property tax bills. To pay online or view property tax information, taxpayers can visit www.kingcounty.gov/propertytax.

For questions about missing tax statements or other tax payment information, visit www.kingcounty.gov/propertytax or contact customer service at 206-263-2890.

Information on senior citizen exemption and deferral programs can be obtained from the King County Assessor’s Office at exemptions.assessments@kingcounty.gov or 206-296-3920.