A cash out allows you to close your bet before a certain betting event ends. Example: If you choose to bet on Tennis, you choose a certain player to win a set at +110. Said player goes up 3-1 in that set, you can cash out early at a certain payout, taking your win and not risking a comeback. Example 2: If you choose to bet on Tennis, you choose a certain player to win a set at +110. Said player goes down 3-1 in that set, you can cash out early for a certain payout, cutting your losses but sacrificing a comeback. Bet365 has partial and full cash outs. A partial cash out is taking some out of the bet, while leaving the rest in said bet.