Washington's SB 6113, effective June 11, 2026, adds a new exclusion to the state's definition of taxable "digital automated services" (DAS). When a buyer accesses a DAS solely to communicate with their service provider, and no separate fee is charged for that access, the service no longer qualifies as a taxable DAS. This change directly affects platform portals and seller-facing dashboards. If a marketplace's seller tools are incidental to the underlying service relationship, they fall outside Business and Occupation (B&O) tax entirely. 

The bottom line: If your business operates a marketplace or platform with seller-facing portals or dashboards, review whether those tools meet the new exclusion criteria. The distinction turns on whether access is incidental to the service relationship and whether a separate fee is charged.