When you hit a jackpot, the amount you win is based on how much you bet. However, it oftentimes is not proportionate. Many machines use something called a multiplier to calculate your payout.
For example, if you’re playing quarter slots, you may have the option to play 25 cents, 50 cents or a dollar. When you win a jackpot, you might get paid $2.50 if you bet a quarter and $5 for 50 cents, but a dollar bet will pay out $20. As always, when you sit down at your machine, make sure you’re reading all available instructions so you know you understand your bets. In many cases, placing the maximum bet will also give you the highest-proportioned payouts.