Policy makers hesitate to increasetobacco taxes over concerns about taxes being regressive andpotentially increasing poverty and inequality. This notesummarizes a set of studies of the effects of raisingtobacco taxes in 11 low and middle-income countries using anextended cost-benefit analysis (ECBA) and harmonizednational household budget survey data and introduces theTOBACTAX Tool. The studies find that demand priceelasticities for tobacco products are larger amonglower-income households and that the poor receive thelargest long-term gains from tobacco taxation. Tobacco taxeshave progressive long-term effects due to lower medicalexpenses and added years of productive life, whichcontribute to poverty reduction in most countries studied.TOBACTAX Tool can help replicate such analyses elsewhere.