The Coalition for a Healthy California is sponsoring a comprehensive statewide ballot initiative to raise the tobacco excise tax by 2.60perpackofcigarettesinordertoprovidefundingtoqualifiedhospitalsforemergencyservices,nursingeducation,andhealthinsurancetoeligiblechildren.Thispaperusesthebestpossiblesciencetoestimatetheeffectofanewtaxoncigarettecomsuption,adultandyouthsmokingrates,taxrevenues,andlongtermhealthoutcomes.Theadditionaltaxwouldraisetheaveragepriceofcigarettesto6.55 per pack