The payout percentage indicates how much of your money you'll receive in winnings as a slots player. This implies you can figure out how often you can expect to win. The pay out percentage is calculated by adding the average stake amount to the fixed online slots payout. For example, if a slot game payout percentage is 98.20 percent, that means the casino will pay out £98.2 for every £100 wagered on average. RTP is a metric that determines how much money you make per hour, or what your return on investment (ROI) is. You can find the RTP for each casino we evaluate in our profile, so you may easily discover the payout percentage on a slot machine.