The RTP of European roulette is 97.3%. The payout of each bet depends on the bet type. There are many bet types in European roulette, all with different odds and payouts. Typically, Outside Bets are safer and have 48.6% odds of winning, such as Red or Black and High or Low. Inside Bets are riskier, and come with odds as low as 2.7%, if you’re betting on a single number.