WA businesses preparing for new retail sales taxes to hit consumers Oct. 1

(The Center Square) — One month from Labor Day, a slew of Washington businesses will be subject to new retail sales taxes, which will be passed onto consumers. The 2025 Washington State Legislature passed Engrossed Substitute Senate Bill (ESSB) 5814, which added new business activities to the definition of retail sales. Those new taxes will be collected starting Oct. 1. According to the Washington Department of Revenue, new business activities impacted by the tax include advertising services, live presentations, information technology services, custom website development services and more. “Not only is it going to be a significant new tax on a