Gambling terms, explained straight

Casino & Table Games

Casino RTP meaning

Casino RTP (return to player) is the long-run percentage of total wagers a game is designed to return to players as prizes.

Formula
Actual RTP = wins ÷ turnover2
No minimum
The Gambling Commission sets no minimum RTP for gaming machines1
Example
A game designed at 91.68% RTP achieved 90.42% actual RTP on £1,200,000 turnover2

Key points

  • RTP is a long-run average, not a guarantee for a single session13.
  • Actual RTP can differ from the theoretical target due to normal volatility2.
  • A casino rtp list shows the theoretical percentages for different games, helping players compare expected returns.

Where this term is used

Sources

  1. Return to player - how much gaming machines payout gamblingcommission.gov.uk Defines RTP and states no minimum RTP for gaming machines.
  2. How to calculate return to player (RTP) gamblingcommission.gov.uk Provides the RTP formula and an example calculation.
  3. RTP games gamblingcommission.gov.uk Explains that RTP is a long-run average, not session-specific.

Sources are drawn from regulators, universities and published research, and each one is labelled with what it actually is — a preprint is not called a paper. Bookmaker and affiliate pages are never cited here, because a page that sells betting is not a neutral authority on it.