Modifying the capital gains tax under chapter 82.87 RCW and related statutes by closing loopholes, repealing and replacing the business and occupation tax credit with a capital gains tax credit, clarifying ambiguities and making technical corrections in a manner that is not estimated to affect state or local tax collections, treating spouses and domestic partners more consistently, modifying and adding definitions, creating a good faith penalty waiver, and modifying the publication schedule for inflation adjustments.