It depends on the slot you have bet on. The maximum bet is typically related to the amount of reels a slot has, along with the type of machine itself. For instance, if you are placing bets at a Rs. 100 slot machine with three reels, the maximum bet will likely be Rs. 300 at a time, with bigger slots generally allowing more bets. Online slots mention the minimum and maximum bet amount, so check before playing. But if you bet at a big win slot, you can win substantial amounts.