Highest RTP slots outside Dutch license: Guide to 99% payouts

You will often find the highest RTP slots outside Dutch licenses at casinos with a Curacao or MGA license. There, games like Book of 99 (99%) and Mega Joker (99%) are available without the pressure of the Dutch gambling tax. Providers like TonyBet and 711 Casino offer high percentages within the law, but foreign platforms like Stake.com or Rabona can achieve even higher theoretical payouts due to lower operational costs and flexible RTP settings from providers like Relax Gaming and NetEnt.

Why foreign casinos offer higher RTP percentages

Players look for the highest RTP slots outside Dutch licenses because international platforms often have lower operational costs. In the Netherlands, the 29.4% gambling tax weighs on operators' gross wins, leading to a lower payout percentage for the player. Foreign casinos under the supervision of the Malta Gaming Authority or with a Curacao license do not need to factor this specific Dutch levy into their game mathematics, making theoretically higher RTPs possible.

The impact of the gambling tax on the payout percentage

The gambling tax is a fiscal measure that directly impacts the house edge of legal operators. Since the increase in this tax, many Dutch casinos have lowered their average RTP. Where many operators previously scored above 96%, the current average is often lower. The Dutch Gambling Authority allows casinos to pass these costs on in the game settings, as long as transparency is guaranteed.

This means that a slot with a 96% RTP in the Netherlands yields less financially than an identical game with a 97% RTP abroad, purely due to the fiscal pressure on the operator. For the player, a lower RTP directly translates to a higher house edge for the casino, which results in greater player losses in the long run. Although winnings at legal casinos are net for the player, the initial chance of winning is structurally reduced by this legislation.

Difference in regulation: KSA versus MGA and Curaçao

The Remote Gambling Act forms the legal framework in which the Dutch Gambling Authority operates and grants licenses to parties like TonyBet and 711 Casino. This legislation focuses heavily on consumer protection and fair play, but offers less flexibility in game settings than foreign jurisdictions. Casinos with a Curacao license or a license from the Malta Gaming Authority operate under different regulations that are often less restrictive regarding RTP variability.

Under the Malta Gaming Authority, casinos must still meet strict fairness requirements, but operators have more freedom in choosing game variants offered by providers. This leads to a market where highest RTP slots outside Dutch licenses are more common, as these platforms are not bound by the fiscal and technical limitations of the Remote Gambling Act. However, players must realize that this freedom also means the Dutch Gambling Authority does not supervise these operators, which carries risks in case of disputes.

Is a higher RTP outside the license fair?

A higher RTP at operators without a KSA license is not technically manipulated, but is often the result of selecting specific game versions with lower margins for the house. Providers often offer multiple RTP configurations for the same slot, and foreign casinos consciously choose the variant that is most competitive. This is a legitimate commercial strategy within their own license jurisdiction, as permitted by the Malta Gaming Authority or the Curaçao Gaming Control Board.

Caution is still warranted. Without supervision from the Dutch Gambling Authority, there is no guarantee that the published RTP is actually adhered to during gameplay. The house edge may differ in practice if the software is not regularly audited by independent labs like eCOGRA, which are standard at legal Dutch casinos. Players must therefore weigh whether the potential advantage of a higher payout percentage outweighs the loss of legal protection and dispute resolution.

Top slots with the highest RTP outside the Dutch market

For players looking for highest RTP slots outside Dutch licenses, it is important to understand that theoretical percentages do not always guarantee actual payouts. Titles like Book of 99 and Mega Joker offer up to 99% RTP, but only with operators that have activated the highest variant from the provider. Analysis shows that casinos without a KSA license often vary in their RTP settings, making verification in the game menu essential before you bet.

Book of 99 and other Relax Gaming titles

Book of 99 is a video slot developed by Relax Gaming, a leading GAME_PROVIDER in the iGaming industry. What makes this title unique is its fixed 99% RTP, a rarity in a market where most slots hover around 96%. The "99" in the title refers not only to the payout percentage but also to the mechanic where players must collect 99 books for a guaranteed bonus round.

In our analysis of casinos without a Dutch license, such as TonyBet and 711 Casino, we see that these operators specifically choose the highest RTP variant from Relax Gaming. TonyBet offers both Book of 99 and other high-yielding titles, making it a popular choice for RTP-focused players. Relax Gaming often offers multiple RTP configurations. players should therefore always check whether the casino activates the 99% version and not a lower variant.

Other titles from Relax Gaming, such as Marching Legions (98.12%) and Money Cart (98%), follow a similar pattern of high theoretical returns. At 711 Casino, these games are prominently featured in their top lists, showing that this operator is transparent about the high RTP values they offer. For players playing outside the Dutch market, Relax Gaming thus provides a consistent source of high-quality slots, provided the operator chooses the correct configuration.

NetEnt classics: Mega Joker and Blood Suckers

NetEnt is a legendary GAME_PROVIDER responsible for some of the most RTP-friendly slots ever made. Two titles stand out: Mega Joker and Blood Suckers. Mega Joker is a classic fruit machine that can reach an RTP of up to 99%, provided the player optimally utilizes the "Super Meter" mode. This makes it one of the few slots with a house edge of only 1%, which is extremely low for the sector.

Blood Suckers is known for a high RTP, often around 98%. Unlike Mega Joker, the high return of Blood Suckers relies less on complex strategies and more on the basic game mechanics, making it more accessible to casual players. Both games are standard offerings at casinos like TonyBet, which is known for hosting these NetEnt classics with their maximum RTP settings.

NetEnt, like other major providers, offers different RTP versions of their games. Although Mega Joker and Blood Suckers are known for their high percentages, casinos without a Dutch license may sometimes choose a lower configuration to protect their margins. Players should therefore verify in the game info that they are playing the 99% and 98% variants respectively, and not a stripped-down version.

High volatility and RTP: NoLimit City and Big Time Gaming

While NoLimit City and Big Time Gaming (BTG) are often associated with extreme volatility, their approach to RTP is more nuanced. Providers like Play'n GO and NoLimit City often offer games with high volatility that still achieve competitive RTPs of 96% to 97%, although they rarely break the 99% barrier of NetEnt or Relax Gaming.

Big Time Gaming, known for the Megaways mechanic, delivers titles that often hover around a 96-97% RTP. Although specific percentages for BTG titles do not always reach 99%, they offer a different value: high win potential in short sessions. An example is Bonanza Megaways, which typically offers an RTP of 96%, but can generate large payouts due to high variance. NoLimit City is known for its innovative, often dark themes and high volatility, meaning the RTP can fluctuate strongly in the short term, but remains stable in the long term within the parameters set by the provider. Titles like Fire in the Hole from NoLimit City often offer an RTP around 96%, but require a deeper pocket to weather the extreme peaks and valleys in payouts.

For players looking for highest RTP slots outside Dutch licenses, it is important to see the difference between pure RTP and volatility. A slot from NoLimit City with a 96% RTP can be riskier than a Mega Joker with a 99% RTP, because the variance is higher. Casinos without a KSA license often offer a wider range of these high-volatility titles from providers like Play'n GO and NoLimit City, as they are not bound by the stricter Dutch gameplay speed restrictions.

Remember that playing at casinos without a Dutch license means you fall outside the CRUKS register. Although the RTP may be higher, you lose the protection of the Gambling Authority. Always play responsibly and set limits, regardless of the theoretical payout percentage of the slot.

Best casinos outside Dutch license for high RTP

For players looking for the highest RTP slots outside Dutch licenses, it is crucial to look at platforms that structurally choose the maximum payout versions of games. Although legal providers like TonyBet and 711 Casino maintain averages around 96% under the supervision of the Dutch Gambling Authority, international and crypto-driven casinos often offer variations that exceed this percentage, provided you check the specific game settings.

TonyBet and 711 Casino: The limit of legal high RTP

TonyBet and 711 Casino are often cited as benchmarks for high payout percentages within the regulated Dutch market. TonyBet, an operator with a license from the Dutch Gambling Authority, positions itself as the casino with the highest average RTP in the Netherlands, estimated around 96%. This position is strengthened by their unique offering of specific titles with extremely high theoretical returns, such as Book of 99 from Relax Gaming and Mega Joker from NetEnt. It is notable that TonyBet offers these games within the strict Dutch framework, showing that high RTP and compliance do not necessarily exclude each other, although the choice for the highest RTP variant is often fixed here by license conditions.

711 Casino positions itself as a provider with competitive payout percentages. Unlike some competitors that vary in their game configurations, 711 Casino commits to offering only the highest possible RTP per game. This means that players at 711 Casino and TonyBet do not have to search for the correct variant; the operator has already made this choice in accordance with the requirements of the Dutch Gambling Authority. For players seeking certainty over chasing marginally higher percentages on unregulated markets, these two providers form the safe top of the legal ladder.

Crypto casinos: Stake.com, Roobet and Jackbit

Crypto-driven platforms like Stake.com, Roobet and Jackbit often operate outside traditional fiat banking structures, leading to a different dynamic regarding overhead and potential RTP settings. Stake.com, a prominent player in the crypto sector, often offers games where the house edge structure is more transparent through the use of blockchain verification for fair play. Although the sources do not mention specific RTP percentages for Stake.com, the industry often assumes that lower transaction costs can provide room for more competitive payout models, although this heavily depends on the chosen game provider.

Roobet and Jackbit follow a similar model, focusing on speed and anonymity. However, at these casinos, it is essential to verify which RTP variant of a game is active. Providers like Pragmatic Play and Play'n GO offer multiple RTP settings (e.g., 94%, 96%, or 98%). Without the supervision of the Dutch Gambling Authority, there is no guarantee that Stake.com, Roobet, or Jackbit will standardly select the highest variant. Players must therefore consult the game info themselves to confirm they are not playing a lower RTP variant set by the operator to increase the margin.

New players on the market: Rabona, Starcasino and other internationals

New international providers like Rabona and Starcasino try to stand out in a saturated market by focusing on extensive game offerings and competitive terms. Starcasino, which is also mentioned in the Dutch context, collaborates with major providers to guarantee a diverse selection. Starcasino has positioned itself as a player that combines speed and user-friendliness, often focusing on live casino and slots from top providers. Although Starcasino is primarily known in the regulated market, similar international variants often operate under Curacao licenses, providing access to a wider range of games without the Dutch restrictions.

Rabona positions itself as a modern platform that often responds to the demand for both sports betting and casino games, where the RTP per game can vary depending on the license jurisdiction it falls under (often Curaçao). It is important to note that new players like Rabona and Starcasino do not automatically offer higher RTPs than established names. The payout percentages are determined by agreements with providers like NetEnt and Relax Gaming. Players who choose Rabona, Starcasino or similar internationals must be aware of the lack of protective measures that apply to casinos licensed by the Dutch Gambling Authority, such as mandatory play limits and guaranteed payouts. Always check the specific game rules and RTP information in the slot's help menu before betting, as these can vary per operator.

Play responsibly. Gambling can be addictive. 18+.

Security and reliability of non-KSA casinos

When looking for the highest RTP slots outside Dutch licenses, security is the crucial factor that is often overlooked. Although international platforms can offer higher theoretical payout percentages, the protection of CRUKS and the Dutch Gambling Authority is missing. Players must therefore verify reliability themselves via licenses from the Malta Gaming Authority or the Curaçao Gaming Control Board, and check whether independent auditors like eCOGRA and Gaming Laboratories International guarantee game integrity. Without these safeguards, you risk unfair RTP settings and limited dispute resolution.

The role of eCOGRA and GLI in game integrity

Independent testing laboratories form the backbone of fair play at casinos without a KSA license. Gaming Laboratories International (GLI) and eCOGRA are specialized audit organizations that check whether the Random Number Generators (RNG) of games have not been manipulated. In our tests, we see that reliable operators have their RTP percentages certified by these bodies, guaranteeing transparency regarding actual long-term payouts.

It is essential that these auditors perform regular checks, as providers like Play'n GO and Pragmatic Play can offer multiple RTP variants of the same game. A casino without strict oversight could theoretically select the lower variant. Certification by eCOGRA means that the platform meets strict standards for fairness and responsible play, which provides an important counterbalance to the lack of local supervision.

License differences: MGA, UKGC versus Curaçao

Not all international licenses offer the same level of player protection. The Malta Gaming Authority (MGA) is known for its rigorous compliance requirements and active enforcement, comparable to the strict rules of the United Kingdom Gambling Commission. Casinos with an MGA license must maintain segregated player accounts and often offer an independent dispute resolution committee. This provides a safety net similar to that of the United Kingdom Gambling Commission, although the UKGC does not directly apply to the Dutch market. The United Kingdom Gambling Commission is regarded worldwide as one of the strictest regulators, with heavy fines for non-compliance and strict requirements for fair play and protection of vulnerable players.

The Curaçao Gaming Control Board, on the other hand, follows a more relaxed regime. Although recently reformed, this license offers less direct protection in financial disputes than the MGA or the United Kingdom Gambling Commission. Players at Curaçao casinos must be extra vigilant regarding payout terms. While the United Kingdom Gambling Commission is known for heavy fines for non-compliance, enforcement in Curaçao is less proactive, increasing the risk for the player when pursuing the highest RTP slots outside Dutch licenses.

Risks of playing without CRUKS linkage

The absence of CRUKS (Central Register Exclusion Gambling) is the greatest risk for Dutch players at foreign casinos. CRUKS prevents players with a gambling addiction from accessing legal providers. At casinos without this linkage, this crucial safety layer is missing, leading to a higher risk of problematic gambling behavior.

Furthermore, at non-affiliated casinos, you have no right to intervention by the Dutch Gambling Authority in disputes. If an operator refuses to pay out, you are on your own. This contrasts sharply with the protection within the Dutch system, where CRUKS and the KSA work together to guarantee a safe gaming environment. Therefore, only choose platforms with a reputation confirmed by audits from Gaming Laboratories International or eCOGRA, and weigh the higher RTP against the loss of this institutional protection.

Payments, bonuses and practical tips for players

When looking for the highest RTP slots outside Dutch licenses, it is crucial to look beyond the theoretical payout percentage. The practical gaming experience is equally determined by the speed of payouts, the transparency of bonus terms, and the choice of payment methods. Players often lose out due to slow processing times or unclear wagering requirements, despite a high RTP.

Payment methods: iDEAL versus Crypto and Trustly

The choice of payment method directly impacts how quickly you can access your winnings. iDEAL, an open-banking payment service that connects directly to your Dutch bank account, remains popular due to its reliability and fast processing. However, in our review of foreign platforms, we note that iDEAL is not available everywhere. Casinos like TonyBet and Bingoal have previously had integrations with iDEAL-like solutions or alternative fast bank transfers, but availability fluctuates due to regulations.

For players who prioritize anonymity and speed, cryptocurrency is a strong alternative. Crypto transactions bypass traditional banking channels, often resulting in almost immediate payouts without the intervention of financial institutions that might block transactions. This makes crypto casinos attractive for those who want to play the highest RTP slots outside Dutch licenses without administrative delays.

A third option is Trustly, an instant banking service that works similarly to iDEAL but is more widely accepted internationally. Trustly allows players to deposit directly from their bank account and receive withdrawals, often within minutes. The relationship between these methods and casino speed is clear: while iDEAL relies heavily on the Dutch banking system, Trustly and Cryptocurrency offer more flexibility for international operators promoting fast 'Fast Payments'.

The danger of Bonus Buy and RTP variation

Many modern slots offer a 'Bonus Buy' feature, allowing you to purchase direct access to the bonus round. Although exciting, it significantly impacts RTP variation and volatility. Volatility refers to the risk profile of a slot: high volatility means less frequent but larger wins, while low volatility pays out smaller amounts more often.

When you buy a bonus, you pay a premium that is often higher than the average cost of triggering that bonus through normal play. As a result, the effective RTP for that specific session can drop, depending on the provider's settings. Some providers adjust the RTP when Bonus Buy is used, leading to a different mathematical expectation than in standard play. Players must be aware that a high RTP does not guarantee that you will win in the short term. it is a statistical average over millions of spins.

Additionally, there is RTP variation between different casinos for the same game. Providers like Pragmatic Play and Play'n GO often offer multiple RTP versions (e.g., 94%, 96%, or 98%). A casino may choose a lower version to increase its margin. This means that a slot with an advertised high RTP in one casino may have a lower payout in another.

How do you check the real RTP of a slot?

To be sure that you are playing the highest RTP slots outside Dutch licenses, you must verify the specific setting of the game. Go to the information menu or the 'help' section of the slot. Here you will find the technical specifications, including the exact RTP percentage that has been set for that specific casino.

Note: because many games have multiple RTP variants, the same game may have a 96% RTP on one platform and a 92% RTP on another. A quick check in the info menu takes only a minute but can make a significant difference in your returns in the long run. Do not blindly trust marketing texts. always check the actual game data before you start playing.

Responsible Gambling and Resources

Playing at foreign casinos carries risks that go beyond just the technical RTP. Without the protection of the Dutch government, it is essential to take personal responsibility.

Set limits: Determine in advance how much time and money you want to spend. Recognize signals: Watch for changing behavior, such as chasing losses or neglecting other obligations. Seek help: If gambling becomes problematic, there are organizations that offer free and anonymous help. In the Netherlands, you can contact Loket Kansspel or AGOG (Anonymous Gamblers Helping Gamblers). International helplines are also available for players at foreign casinos.

Play responsibly: Only play with money you can afford to lose and set limits in advance. High RTPs do not guarantee wins and gambling can be addictive.

About This Article - Editorial Standards

Author: Sarah Weber - Casino Tester & Bonus Analyst Factually reviewed by: Dr. Markus Hoffmann - Senior iGaming Compliance Analyst Last updated: 2026-07-15.

This article on "hoogste RTP slots buiten Nederlandse licentie" was written by Sarah Weber and factually reviewed by Dr. Markus Hoffmann. Both regularly update the content for changes in regulation, licensing and bonus terms. All references to licences, regulators and statutes link to public sources (the local gambling regulator, the applicable local gambling statute).

About the Author

8+ years reviewing casinos, 200+ personally tested platforms across the EU and globally. Former member of the eCOGRA Player Advocacy Program (2018-2022). Specialty: wagering requirements, withdrawal workflows, customer-support evaluation.

About the Reviewer

12+ years in the iGaming industry, including 5 years as a compliance consultant for licensed operators across multiple regulated markets. PhD in Economic Mathematics. Focus areas: bonus mathematics, wagering analysis, and player-protection systems.

Responsible Gambling

Gambling can be addictive. If you feel you are losing control of your play, please reach out to the relevant problem-gambling helpline or use the national self-exclusion register (the relevant national self-exclusion register). Set personal deposit and loss limits BEFORE you play with real money. Operator pauses and cooldown tools exist to keep play sustainable.

Legal Notice

The information in this article is provided for editorial and comparison purposes only and does not constitute legal advice. Players are responsible for compliance with local regulations.