Choosing the highest payout casino sites is key to smarter play. We tested and ranked the best options for players in Spain, with easy-to-follow tips that help to boost your returns now.
Return to Player (RTP) is a theoretical percentage showing the average payout to players over time.
Even if RTP percentages are higher, they’re not a guarantee of winning.
Licensed casinos and game developers must publish RTP percentages for games.
Blackjack tends to offer the highest payout rates at online casinos.
In the following list, you’ll find our top recommendations for trustworthy online casinos. These sites offer Spanish players the best gaming options, welcome bonuses, and high payout rates. Click the links to read our in-depth reviews covering everything you need to know.
All Sites Licensed by the: DGOJ
The Best Online Casino Payouts for Spanish Players
18+ | General terms and conditions apply. More information on the operator's website. Play responsibly.
During our tests, one site emerged as the best paying online casino in Spain. But we had other strong contenders in specific areas, like fair bonuses with no wagering requirements or live roulette games with high Return to Player (RTP) rates. Check out our top recommendations for each category below:
Each top payout casino site has unique strengths, but they share one thing in common – every site on our list is licensed by the DGOJ (Spanish General Directorate of Gaming Regulation), ensuring legal and safe gambling.
Why Online Casino Payout Rates Matter
To improve your chances of winning at the best online casinos and get better value, understanding payout rates is the way. RTP (Return to Player) is the percentage of all wagered money that a casino game pays back to players over time, but the most important thing to remember is that it’s all theoretical. There is no guarantee of success, even at casino sites offering games with the best payout rates.
Volatility also matters: High-volatility games pay less often but can deliver larger wins, while low-volatility games offer smaller, more frequent payouts. Knowing both can help you choose games that match your play style.
We found Casino Gran Madrid payout rates published in the help section of the website.
Can You Trust the Stated Online Casino Payout Percentages?
Yes, you can trust the average RTP rates listed at the highest payout casino sites we reviewed. They are officially licensed by the DGOJ and under Spanish regulations, online casinos must publish the RTP percentages for all games with monthly verification.
Also, legit casino sites must undergo regular audits by independent testing organizations, such as eCOGRA and GLI, which verify payout rates and the fairness of their games.
Important: Don’t be fooled by online casinos promising unbelievable payout rates above 99% for all games. If it sounds too good to be true, it probably is — always choose safe, licensed sites that have verified audits.
Which Are the Highest Payout Online Casino Games?
The casino site’s overall payout is an average of all its games, so the type of game you choose matters! Here are some of the best games for higher payouts, but remember that the exact percentage can vary due to differences in gameplay mechanics and rules.
Top 10 Best Payout Online Casino Games
Blackjack – 98.03% – 99.93%
Video Poker – 90.00% – 99.00%
Baccarat – 98.76% – 99.50%
Craps – 97.30% – 99.54%
Roulette – 94.00% – 98.65%
Pai Gow Poker – 97.00% – 98.50%
Sic Bo – 69.44% – 97.22%
Texas Hold’em Poker – 97.00% – 99.00%
Slots – 90.00% – 99.00%
Keno – 85.00% – 95.00%
Picture: Comparison of the payout rates for casino games
Best Payout Online Slots
The highest RTP online slots often feature lower volatility, meaning they pay out more frequently, though usually in smaller amounts. These games provide a steadier stream of returns, which can be appealing if you want more consistent gameplay.
Many of the top online slots casino sites in Spain offer games with high RTP rates above 97.00%:
Best Payout Slot Games in Spain
Blood Suckers – 98.00%
Codex of Fortune – 98.00%
Starmania – 97.87%
White Rabbit Megaways – 97.72%
Secret of Atlantis – 97.07%
88 Coins – 97.00%
Jack Hammer – 96.96%
Jimi Hendrix – 96.91%
Zeus II – 96.76%
Fruit Shop – 96.71%
High-Volatility, Progressive Jackpot Online Slots
By comparison, high-volatility online slots often include progressive jackpots or large prizes. Wins are less frequent, but payouts can be much bigger. These games usually have lower RTPs because part of each bet funds the jackpot, reflecting the trade-off between payout frequency and prize value.
Mega Moolah – 88.12%
Major Millions – 91.00%
Major Moolah – 91.00%
King Cashalot – 94.00%
Fruit Fiesta – 94.00%
Jackpot Giant – 94.22%
Hall of Gods – 95.50%
Wheel of Wishes – 96.40%
Divine Fortune – 96.59%
Mega Fortune – 96.60%
Remember: Legit casino sites will always publish the RTP rates for slots in the game information or paytable pages. Always check these before placing bets.
How Can I Increase My Winning Opportunities at Online Casinos?
Choose online casino payments with no fees.
When deciding which payment methods to use for deposits and withdrawals, check all the options available and choose those with no extra fees. Remember that if there are fees attached to your preferred withdrawal method, they reduce the profitability of your winnings.
Take advantage of bonuses and promotions.
Some of the best online casino bonuses can offer you increased winning opportunities, such as free spins on slots or extra playing funds, but you should always check the terms and conditions attached.
If wagering requirements are high, game choices and time limits are restrictive, or maximum withdrawal amounts are capped, they don’t offer any real advantages. Remember that bonuses are optional, so choose promotions that fit your own gaming tastes.
Look for games with high RTP rates.
Casino games with high Return-to-Player (RTP) percentages improve your long-term outcomes. They don’t guarantee or imply higher chances of winning, but they do reduce your expected losses. This gives you more playing time and more opportunities to win. RTP rates are usually displayed in the game rules and paytable or information pages, within the game itself.
Set your playing budget and stick to it.
No matter the size of your bankroll or spending capacity, establishing a strict playing budget is always a good idea. Try to avoid falling into the trap of chasing losses, and even if you’re enjoying a winning streak, knowing when to walk away in either situation is important.
Read the casino game rules and paytables before playing.
Online casino games usually always have game rules and paytable information pages. There’s no rush, take your time reading through them before you start playing. Knowledge is power, and the more you know about any casino game, the better your chances of spotting winning opportunities.
Take care with side bets in casino games.
Many online casino games now feature a wide variety of side betting options. Although side bets can offer you increased winning opportunities, they can also feature higher odds and imply greater levels of risk.
Try to calculate the levels of risk versus the potential rewards, before deciding if those side bets will add anything to your own gameplay.
Practice games for free before gambling with real money.
Game developers often have demo versions of games you can try for free, as do some online casino sites. These are a useful way to practice, helping you become more familiar with gameplay mechanics, betting options and game rules, before you risk any real money.
Know the minimum and maximum betting options in games.
Always check the minimum and maximum wagering options for the games you play. This can help you identify games that fit with your gambling budget.
In most online casino games, although staking higher amounts can increase your potential winnings, there’s also increased risk of losing your funds much faster. Try to find the right balance.
Play with a clear mind and focus.
Balancing your emotions can be tricky when playing online casino games, especially when you’re staking real money on the outcomes of your bets.
Try to stay calm and focused on what you’re doing, so that you can better identify potential wins and losses. Avoid gambling while under the influence of alcohol or drugs, which can impair your decision-making process in games.
Know when to pause or stop playing.
When playing online casino games that are engaging and fun, your sense of time can easily become distorted, with minutes quickly turning into hours. Becoming tired or jaded while playing will not help your winning opportunities.
Take breaks between playing sessions or stop completely, moderating the time and money that you spend while playing.
Conclusion – Playing at the Best Paying Casinos
Heath Chesters Casino Expert
“What I love most about Spanish online casinos is the transparency. By law, licensed sites must show you the RTP percentage for every game, and that’s really helpful when you’re deciding what to play.”
Key Gambling Terminology Related to Casino Payout Rates
RTP (Return to Player)
The percentage of wagered money a game theoretically returns to players over time. Short-term results will vary.
Variance
A measure of a game's volatility; high variance means infrequent large wins, low variance means frequent small wins.
Gross Win
The total amount won before deductions (e.g., taxes).
Net Win
The total amount won minus the total amount wagered.
House Edge
This represents the casino's long-term advantage in a game. It's the percentage of money wagered that the casino expects to keep as profit over time. This edge is built into the game's rules and probabilities.
Winning Odds
Winning odds are the probability of winning a particular game or bet. E.g. in American roulette, if you bet on a single number, the odds of winning are 1 in 38 because there are 38 possible outcomes (numbers 1-36, plus 0 and 00). If you win, the payout is typically 35:1.
Win Rate
This is the frequency with which a player wins. A 25% win rate means the player wins roughly one out of every four bets. This doesn't account for the size of wins, only the number of winning outcomes relative to the total number of bets
Expected Value
The average outcome of a bet over many repetitions. Positive EV means the player is expected to win in the long run, negative EV means the house has the advantage. Crucial for strategic players.
Should you need further details regarding the payout rates at top Spanish online casinos or how these theoretical figures are calculated, our team of experts is ready to help.
What is the best payout for an online slot in Spain?
There are many high-payout slots you can try at the top Spanish online casinos. Some of the most popular ones at the moment are Book of 99, Mega Joker, and Big Bass Bonanza.
How is the payout rate of Spanish casino sites calculated?
The payout percentage of the top Spanish online casinos is the average of the RTP rates for all games listed on the sites. It is important to highlight that this rate changes when the gaming selection is updated with newly released titles.
Which is the fastest payout method for Spanish casino players?
By law, online casinos in Spain must order your withdrawal within 24 hours. Time after that depends on the payment method you choose. The fastest option for withdrawals at most casino sites is PayPal, closely followed by Apple Pay or Google Pay.
What's the difference between payout rate and house edge?
These are two sides of the same coin. The RTP (Return to Player) shows the percentage of wagers returned to players over time, while the house edge represents the remainder—the percentage that online casinos keep.
By visiting our website, you are declaring that you are 18+ and agree to our Terms and Conditions, Privacy Policy, and to accept our use of Cookies. This website contains advertisement.
Written By Heath Chesters
