Requires the director of the department of community, trade, and economic development to design and implement a forestry carbon offset program.

Requires the director of the department of ecology, in conjunction with the department of transportation, and the department of licensing, to establish a method to require every vehicle registered in the state to annually purchase carbon credits based on a greenhouse gas index or rating system for motor vehicle emissions when renewing their vehicle licenses from the forestry carbon offset program.

Instructs the director of the department of ecology to design a market-based cap and trade system consistent with the emission goals established in RCW 80.80.020.