
California Just Taxed SaaS: A State-by-State Guide to Software Subscription Sales Tax in 2026 and 2027
California SB 122 makes SaaS and other digital products subject to sales tax from January 1, 2027, with Colorado's HB 26-1223 flipping the same day. This guide maps SaaS taxability across all 50 states as of August 2026, explains economic nexus thresholds like California's 500,000 dollars plus the 5-million-dollar purchaser self-assessment rule, and gives a pre-January compliance checklist for software sellers and buyers.










