Statewide Single Audit (SWSA) Summary 2017 Statewide Single Audit (SWSA) Summary 2017: In 2017, the Washington state spent more than $17.5 billion in federal money. Each year, the Statewide Single Audit (SWSA) examines whether state agencies complied with federal requirements for those funds. As a whole the state does meet those requirements. We also have SWSA reports available from previous years.