[4][5] The organization's stated mission is "to advocate for government transparency and accountability, as well as to improve lives by promoting sound public policy based on free-market solutions.
The organization is divided into eight research centers: Agriculture, Education, Environment, Government Reform, Health Care, Small Business, Transportation, and Worker Rights.
[6] WPC operated a free public-service website, WashingtonVotes.org, which tracked what bills state legislators introduce and support.
[8][9] The organization uncovered an error in Sound Transit's defense in a $500 million class-action lawsuit filed by taxpayers regarding the collection of car tab tax charges.
[10] The constitutionality of the car-tab collection levied by Sound Transit was upheld by the State Supreme Court in February 2020.