An ante is a forced bet in which all players put an equal amount of money or chips into the pot before the deal begins. Often this is either a single unit (a one-value or the smallest value in play) or some other small amount; a proportion such as a half or a quarter of the minimum bet is also common. An ante paid by every player ensures that a player who folds every round will lose money (though slowly), thus providing all players with an incentive, however small, to play the hand rather than toss it in when the opening bet reaches them.
Antes are the most common forced bet in draw poker and stud poker but are uncommon in games featuring blind bets. However, some tournament formats of games featuring blinds impose an ante to discourage extremely tight play. Antes encourage players to play more loosely by lowering the cost of staying in the hand (calling) relative to the current pot size, offering better pot odds. With antes, more players stay in the hand, which increases pot size and makes for more interesting play.
