What is RTP in Online Casino Games?

Jon Young

06/24/2026

RTP in online casino games may seem confusing for new players, but it’s a simple piece of math.

Essentially, it’s the average Return to Player percentage of each dollar you spend playing a game like roulette or video slots.

Every online casino game has a different RTP that's built in, so you know what you’re dealing with on every spin.

What is RTP?

• RTP stands for 'Return to Player' 
• Every casino game has a verified theoretical RTP
• The lower the RTP, the bigger the casino’s house edge

All online casinos offer games that are programmed to pay out according to an algorithm. They aren’t guaranteed to pay out all the time, but that’s where the risk for players comes in.

The RTP is the theoretical return to players for every $1 spent. Here’s an example:

Imagine you play an online slot like Sweet Bonanza with an RTP of around 96.55%. That means you receive an average of $96.55 back for every $100 paid in. The remainder, $3.55, is the house edge and belongs to the casino.

Of course, you may go on a hot streak and win 1,000 spins in a row, though that’s unlikely. Your personal RTP may be much higher than the average. However, average RTPs are calculated over millions of spins and deals of the cards.

How Return to Player percentages compare

At sweepstakes casinos and real-money casino sites, every game has its own RTP. Manufacturers calculate the true odds of a payout and factor in the casino’s house edge.

Online slots

Every online slot has its own RTP built in. The arrangement of high-paying symbols determines the frequency and size of your payouts.

You can view the RTP in the slot paytable. Many slot developers also publish RTPs on their homepages. Online casinos like DraftKings also display RTPs on their help pages.

Some providers display hit rates for slots on their sites. This is the average percentage that you’ll trigger a specific bonus feature, such as free spins.

For online slots, you should look for an RTP of around 96%. Any lower, and your bankroll will suffer in the long term.

Online blackjack

Online blackjack at Caesars Casino and other sites offers an RTP of 98.5–99% (house edge of 1–1.5%), but you must use optimal play.

What’s optimal play in blackjack? Avoid taking high-edge bets like Insurance, and use a cheat sheet to hit, stand, and double down at the right times.

Online roulette

Online roulette recreates the thrill of the Vegas Strip on your mobile device or computer. Plus, you can play higher-RTP variants online than you’ll find at land-based casinos in the U.S.

American Roulette has an RTP of 94.74%. Compared to that, European Roulette is higher at 97.30%.

Why the difference? American Roulette has an extra green pocket (00) in its wheel. That’s one extra pocket that can turn red or black bets into losers.

How to maximize RTP at online casinos

Let’s wrap with a few ways to maintain your RTP level at all times.

1) Choose the right games

This is an obvious tip, but always choose games with the highest RTPs possible. Play European Roulette if you can find it, and choose slots with an RTP over 95%. Finally, avoid lousy bets like Insurance in blackjack or the Tie in baccarat.

We rank some of the best new sweepstakes casino games and online slots to help players find fun titles this month.

2) Maintain a good bankroll

Good bankroll management always makes sense, whatever casino game you play. Stick to a budget plan, size your bets accordingly, and never chase losses.

3) Practice makes perfect with demo-play spins

Many online casinos offer free-play versions of their games. You can judge the RTP in online casino games better if you play a few hundred times with no risk.

Plus, consider claiming online casino bonuses to help make your money work harder for you. Claiming free spins or a small deposit match bonus can help reduce the casino’s house edge.