RCW 46.17.305: Boat trailer fee.

Before accepting an application for a vehicle registration for a boat trailer, the department, county auditor or other agent, or subagent appointed by the director shall require the applicant to pay a three dollar aquatic weed fee in addition to any other fees and taxes required by law. The three dollar fee must be deposited in the freshwater aquatic weeds account created in RCW 43.21A.650.