For centuries, casual bettors and hardcore gamblers have been attempting to build betting systems and strategies that can beat the house. Ever since roulette took Europe by storm, itโs been a prime candidate for strategies. Eventually, so too did blackjack, with systems being preferred to strategies for those who didnโt fancy doing the stacks of reading.
A common name circling betting strategies of the modern online casino scene is the Martingale. However, when this fails, some turn to the more glamorously-named Grand Martingale. As is often the case, itโs promised to be a proven method of bringing in returns. So, letโs explore if the Grand Martingale betting system works.

What is the Grand Martingale Betting System?
The Grand Martingale betting system is a method of increasing your wager to recover from losses. You play the same bet each time on evens returns options until you lose. Then, you double the wage and add one unit to the bet. If that loses, itโs double again with another single unit added. This continues until you win.
Of the three Martingale betting systems that can be applied to games like roulette and blackjack, the Grand Martingale is by far the riskiest. It aims to build on the Martingale method by not just returning wagers after a losing streak, but also adding a pocket of wins โ which comes from the single additional added unit.
Hereโs how the Grand Martingale betting system can play out:
- Have the base wager as ยฃ10 and bet it on an evens returns option;
- After a win, you double the wager (to ยฃ20), as well as add a single unit (ยฃ10), for a ยฃ30 wager;
- The next one loses, so you double the wager (ยฃ60), and add another single unit for a ยฃ70 wager;
- If the next one wins, you get ยฃ140 in return from a ยฃ110 total of lost wagers.
As you can see, the aim is to recuperate losses and pocket a win at the same time. This increases the wager each time more so than any other Martingale strategy. Itโs easily the most taxing on your bankroll and is the fastest to hitting bet size caps.

When can the Grand Martingale Betting System Work?
The thinking behind the Grand Martingale betting system is that eventually, a losing streak will end, which is true, in theory. On bets like red or black on roulette, you have a 48.6 per cent chance to be correct on any given spin. So, the Grand Martingale betting system can work as long as you continue betting until you win.

When can the Grand Martingale Betting System Fail?
The Grand Martingale betting system can fail if you reach your bankroll limit or the wager limit of the table. Starting with a higher base wager, youโll have fewer attempts to break the losing streak. As each loss double the wager and adds another unit, you can very quickly approach the wager ceiling, which would end your run.

Why the Grand Martingale Betting System Doesnโt Work
The Grand Martingale betting system doesnโt work because thereโs a cap at every table, and everyone should play within their means. Many online casino tables have a maximum wager of around ยฃ500, while even the VIP tables or high-roller games will cap out at ยฃ1,000 or ยฃ5,000. These may seem like unreachable numbers, but with the Grand Martingale, even starting with a ยฃ5 wager will surpass ยฃ1,000 after eight consecutive losses.
While the standard Martingale betting system doesnโt work either, it at least gives more chances for a very large bankroll to potentially turn in the win needed to break even. With the Grand Martingale method, because of the additional wager of a single unit, itโs exponentially riskier. It puts more money on the line with fewer chances for those wagers to turn in a win.
Even when you bet on the likes of evens returns roulette places, each round has a 51.4 per cent probability of producing a loss. As such, in each round, itโs more likely that youโll lose. Even in a pure 50:50 chance game, itโs still possible to go on a long losing streak, even if you stick with the exact same bet of two options. At a ยฃ1 base bet, youโll need to make a wager of ยฃ63 after your fifth loss, amounting to ยฃ119 in lost bets.
In fact, itโs slightly more probable for a losing streak to occur than a winning streak โ not that a winning streak matters for the Grand Martingale betting system. The probability of four wins occurring in a row on a red or black bet on European roulette is 6.08 per cent. The probability of four consecutive losses on that same bet is 6.4 per cent.

Whatโs the Best Betting Strategy to Use in Online Casino Gaming?
The best betting strategy to use in online casino gaming is to set a limit on your bankroll and donโt exceed it at all. As the aim of playing casino games is to have fun and win money, be sure to put any of your winnings to one side, and once your set bankroll is done, finish gambling.
Itโs important to remember to never fall into the trap of the Gamblerโs Fallacy, with which you believe that an outcome will arrive because it hasnโt for a series of turns. This is the kind of mindset that fuels a strategy like the Grand Martingale and can result in huge losses. So, itโs best to avoid any strategy that could see you bet at increasing risk on an increasingly less probable outcome at the end of a series.
The best way to enjoy online casino games or any other form of gambling is to only play for fun and to only bet within your limits. For further advice on how to gamble safely and responsibly, refer to the resources mentioned on our Safer Gambling page.
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