Nothing in this chapter limits or abridges the authority of any political subdivision to levy and collect a general and nondiscriminatory license fee levied upon all businesses, or to levy a tax based upon gross business conducted by any firm within said political subdivision.
RCW 18.108.210
Finding-2007 c 165: "The legislature finds that licensed massage practitioners should be treated the same as other health professionals under Title 18 RCW and that additional registrations or licenses regulating massage or massage practitioners are not authorized." [ 2007 c 165 § 1.]