A parlay formula bet is less risky than a multi bet, as a leg can fail to win, yet the bettor can still receive a rewarding payout. Whereas a multi bet, or same game multi bet, demand that all legs be successful to win a parlay formula bet will pay a dividend depending on the ‘formula’ input by the bettor. The winnings from each bet are in turn bet on the next leg. What is an accumulator betĪn accumulator bet is the same as a parlay bet, in that a cumulative series of single bets are combined to form one bet. However, there are different versions of the parlay bet that distinguish it, notably, the parlay formula bet. A parlay bet is also called an accumulator bet, and on first glance appears to be the same as a multi bet. The winnings from every single bet are reinvested into the next leg of the parlay. A parlay bet is a wager that links several single bets together to form one bet.