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Martingale and the table limit: the wall every ladder hits
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Every roulette table has a maximum bet, and the Martingale is the reason the maximum matters to anyone betting red. The ladder needs each stake to double; the table says it may not, above a certain figure. Where that figure sits decides how many steps you get, and casinos set it with progressions in mind.
Typical limits
Online RNG tables: minimum 10p to £1, maximum on even-money bets from £100 to a few thousand. Live tables: minimum 50p to £5, maximum from £1,000 to £10,000 on the outside, higher at VIP tables. The ratio of maximum to minimum, not the maximum alone, is what sets the ladder length.
| Max ÷ min | Doublings allowed |
|---|---|
| 100 | 6 (1, 2, 4, 8, 16, 32, 64) |
| 500 | 8 |
| 1,000 | 9 |
| 5,000 | 12 |
Starting at the table minimum, a 500:1 ratio allows the stake to double eight times before the ninth step exceeds the cap.
What happens at the cap
You have lost n times, the next stake should be base × 2ⁿ, and the table will not take it. You can place the maximum, which does not recover the sequence if it wins, or stop. Either way the ladder has failed and the loss is base × (2ⁿ − 1). The limit does not make the streak more likely; it makes the streak final.
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Why the limit is set where it is
A casino with no maximum would still have the house edge, but it would face occasional huge single-spin exposures to players with huge bankrolls, and it would face the one scenario where a Martingale player with effectively unlimited money could grind out units indefinitely. The maximum removes both. A ratio of a few hundred to one allows the recreational player to double a handful of times and ensures the streak that beats the ladder arrives within a normal session.
Moving up a table
The usual suggestion when the cap bites is to continue the ladder at a higher-limit table. In practice the ninth or tenth step of a ladder is a four-figure bet, and the player who could place it did not need the ladder. The cap and the bankroll run out at about the same place for almost everyone.
The limit from the other side
If you are flat betting, the maximum is irrelevant. If you are using Paroli or any system that only increases after wins, the maximum is a ceiling on your winnings, not a wall. Only the loss-chasing progressions treat the limit as the enemy, and that tells you what the limit is for.
The one-sentence summary
The table maximum is the casino's way of guaranteeing that every Martingale sequence has a last rung, and the last rung is where the sequence's entire history is paid back at once.
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Good to know
Why do roulette tables have a maximum bet?
Partly to cap the casino's exposure on a single spin and partly because progressions like Martingale are only dangerous to the house if unlimited. A maximum of 100 to 500 times the minimum allows seven to nine doublings and no more.
Can I move to a higher-limit table when I hit the cap?
You can, if your bankroll allows the next stake. Most players cannot: the eighth step of a £5 ladder is £640 and the ninth £1,280. The cap usually coincides with the point where the money runs out anyway.