California Billionaire Tax (Prop 40): Who Pays and When?
Does California’s billionaire tax apply to me? Only if you are a California resident on January 1, 2026 and your net worth reaches $1 billion on December 31, 2026. If Proposition 40 passes on the November 3, 2026 ballot, the california billionaire tax imposes a one-time levy that phases in to 5% between $1B and…







