Yes, there are penalties for late property tax payments in King County. Property owners who do not pay their property taxes by the due date may incur a penalty fee. Typically, a percentage of the unpaid amount is added as a penalty. The specific rates and timing of penalties can vary, depending on how far past the payment deadline the taxes remain unpaid. Additionally, if taxes remain unpaid for an extended period, they may lead to additional interest charges, and ultimately, the possibility of tax foreclosure. It is always advisable to stay informed regarding payment deadlines and any possible penalties. For the most accurate and detailed information regarding specific penalties and fees, it is beneficial to check the King County Assessor's official website.