Skimming (casinos)

Skimming refers to the illegal transfer of funds from casinos to outside personnel without official documentation. Skimmed money is usually transferred in cash to evade taxes and to fund organized crime anonymously. The quantities of money skimmed are usually small portions of the casino's total profit so as not to arouse suspicion from regulators or law enforcement.

In May 1963, the FBI turned over to the Justice Department a two-volume document called The Skimming Report, which detailed skimming of gambling profits by Las Vegas casinos to avoid taxes. The report documented how pre-tax profits from casinos were being routed to various organized crime syndicates across the nation. No one could be prosecuted as the FBI obtained its information by illegally bugging casino money rooms. The money rooms are where the cash from the betting floor is counted and recorded on the casino's books.

Skimming by diverting pre-tax profits is just one of many possible methods. In casinos the patron is betting against the house, so the house has an incentive to fix the games (cards, roulette, slots, etc.). In pari-mutuels (horse and dog track, jai alai) the house instead gets a fixed percentage of the total amount bet, so is theoretically less likely to fix the games.