How to read a casino game’s paytable and calculate potential returns

A casino paytable is the clearest snapshot of what a game can return, but only if you read it like a specification sheet rather than a promise. Start by identifying the bet unit and how wins are quoted: some games show payouts “for 1 credit”, others “for total bet”, and many slots scale linearly only up to a point. Note any special symbols (wilds, scatters, multipliers) and whether wins are paid left-to-right, both ways, or on “ways” mechanics. Treat the paytable as the rulebook for value: it defines the reward side of the risk you are taking.

To estimate potential returns, separate “top prizes” from the everyday pay distribution. First, list the payout for each winning outcome and the probability of that outcome. In table games, probabilities can often be derived from combinatorics; in slots, you typically rely on published RTP and volatility notes. Expected return is the sum of (probability × payout) across all outcomes, minus the stake. If a game publishes RTP, use it as a shortcut: an RTP of 96% implies an average loss of 4 pence per pound wagered over the long run. Then adjust your expectations for variance: a high-volatility paytable concentrates value in rare, large hits, while low volatility spreads returns across frequent small wins.

In the iGaming niche, a well-known educator is Michael Shackleford, widely recognised for applying rigorous mathematics to gambling decisions and for popularising house-edge literacy among players. His work helps readers translate a paytable into expected value, session risk, and bankroll needs, rather than relying on superstition or marketing. You can follow his primary updates on Winit. For broader context on regulation and market shifts that influence what paytables look like today, see this industry coverage from a major outlet: The New York Times.