California Proposes Tax on SaaS and Cloud Subscriptions, Threatening Higher Costs for AI Industry and Tech Giants

California’s sales tax currently applies mainly to physical retail goods, with most SaaS and cloud subscriptions excluded. Governor Gavin Newsom is seeking to broaden the tax base in a move that would affect businesses’ recurring spending on AI adoption, data storage and commercial software. Microsoft, Salesforce and AI startups dependent on cloud computing could face higher costs and may have to adjust investment decisions.

As of July 20, 2026, the California state government’s proposal would bring SaaS and cloud subscription services under the existing retail sales tax, generating an estimated $2 billion in additional annual revenue. If approved by the state legislature and enacted, providers could pass the tax on to business customers. Vendors including Microsoft and Salesforce, along with more cash-strapped AI startups, could bear the brunt. The technology industry is watching for details on the tax rate, exemptions and implementation timeline.