Washington Revised Code Title 46. Motor Vehicles § 46.72.070. Certificate--Fee

The director shall approve and file all bonds and policies of insurance. The director shall, upon receipt of fees and after approving the bond or policy, furnish the owner with an appropriate certificate which must be carried in a conspicuous place in the vehicle at all times during for hire operation. A for hire operator shall secure a certificate for each for hire vehicle operated and pay therefor a fee for each vehicle so registered. Such permit or certificate shall expire on June 30th of each year, and may be annually renewed upon payment of a fee.