Defines "checkout bag" and "grocery store."

Provides guidelines for grocery stores in providing checkout bags.

Calls for the department to develop guidelines identifying the specifications of checkout bags.

Declares that there may be a credit against the tax imposed by chapter 82.19 RCW.

States that the maximum penalty and the default amount for a class 1 civil infraction shall be five hundred fifty dollars, not including statutory assessments, for an infraction of state law involving checkout bags.