The National Center for Policy Analysis (NCPA) has published a paper titled, “Taxing the Poor: A Report on Tobacco, Alcohol, Gambling, and Other Taxes and Fees That Disproportionately Burden Lower-Income Families” (PDF).
The paper highlights state lotteries as particularly regressive taxes: “The dollar amount spent on the lottery by the lowest-income individuals (earning less than $10,000 annually) is twice as much as the highest earners (earning more than $100,000 annually).” I wrote a piece reacting to a poll with a similar finding awhile back.
The NCPA study also points out that “lotteries have worse odds than other forms of gambling; in fact, states retain some 33 cents of each dollar of lottery revenue — whereas privately owned casinos keep just 4.4 percent of the take.” And of course that casino take depends on the type of game played. Keno has the worst odds, with roughly 1/4 of the take going to the house, while games like roulette, slots, or blackjack have less than 5% house takes.
The paper also studies other popular sin taxes, like tobacco and alcohol, and one of the newest potential additions to the sin tax category: gasoline.