Washington Revised Code Title 81. Transportation § 81.100.060. Excise tax (as amended by 2006 c 318)

A county with a population of one million or more and a county with a population of from two hundred ten thousand to less than one million that is adjoining a county with a population of one million or more, having within their boundaries existing or planned high occupancy vehicle lanes on the state highway system, or a regional transportation investment district for capital improvements, but only to the extent that the surcharge has not already been imposed by the county, may, with voter approval, impose a local surcharge of not more than three-tenths of one percent of the value on vehicles registered to a person residing within the county and not more than 13.64 percent on the state sales and use taxes paid under the rate in RCW 82.08.020(2) on retail car rentals within the county or investment district. A county may impose the surcharge only to the extent that it has not been imposed by the district. No surcharge may be imposed on vehicles licensed under *RCW 46.16.070 except vehicles with an unladen weight of six thousand pounds or less, RCW **46.16.079, **46.16.085, or *46.16.090.

Counties or investment districts imposing a tax under this section shall contract, before the effective date of the resolution or ordinance imposing a surcharge, administration and collection to the state department of licensing, and department of revenue, as appropriate, which shall deduct an amount, as provided by contract, for administration and collection expenses incurred by the department. All administrative provisions in chapters 82.03, 82.32, and 82.44 RCW, as existing on January 1, 2006, shall, insofar as they are applicable to motor vehicle excise taxes, be applicable to surcharges imposed under this section before June 7, 2006. Motor vehicles subject to the local surcharge authorized in this section shall be administered in accordance with ***this act if the surcharge is first imposed on or after June 7, 2006. All administrative provisions in chapters 82.03, 82.08, 82.12, and 82.32 RCW shall, insofar as they are applicable to state sales and use taxes, be applicable to surcharges imposed under this section.

If the tax authorized in RCW 81.100.030 is also imposed, the total proceeds from tax sources imposed under this section and RCW 81.100.030 each year shall not exceed the maximum amount which could be collected under this section.