Overview
The Martingale is the oldest betting system on record: bet one unit on an even-money outcome, and double the stake after every loss. Whenever a win finally lands it repays every loss in the chain plus exactly one unit, and the progression resets.
On paper it cannot lose — provided you have infinite money and the casino has no table limit. Neither is true. The system's real output is a stream of one-unit wins punctuated, rarely but inevitably, by a losing streak that the table max or your bankroll refuses to let you double out of.
How It Works
- 1
Size a small unit
The chain grows brutally fast, so start tiny: $10 on a $5,000 bankroll (0.2%).
- 2
Bet an even-money lane
Player keeps every double exact. Banker's commission means a win recovers slightly less than the chain — you'd need to over-double to compensate.
- 3
Reset on a win
Any win closes the chain at +1 unit. The next bet returns to the base stake.
- 4
Double on a loss
10 → 20 → 40 → 80 → 160 → 320 → 640. Each bet, if it wins, recovers everything before it plus $10.
- 5
Know your wall
The eighth bet would be $1,280 — over this table's $1,000 max. The progression has a hard ceiling at seven losses whether you like it or not.
The Bets
One even-money lane, doubled relentlessly — shown on Player for exact arithmetic. Ties push and leave the chain where it stands. The Tie lane itself has no place in any progression.
Example Sequence
A four-hand chain with a $10 unit on Player:
| Hand | Bet | Result | Net | Running |
|---|---|---|---|---|
| 1 | $10 Player | Loss | −$10 | −$10 |
| 2 | $20 Player (double) | Loss | −$20 | −$30 |
| 3 | $40 Player (double) | Loss | −$40 | −$70 |
| 4 | $80 Player (double) | Win | +$80 | +$10 |
$150 was wagered across four hands to win $10 — the system's entire bargain in one line.
The Math
Ignoring ties, the Player bet loses about 50.7% of resolved hands. Seven consecutive losses run at roughly 0.86% — about once every 116 chains. Each such run costs $1,270 at a $10 unit, and the eighth bet ($1,280) is over the table max, so the chain simply dies there: 127 units lost chasing chains that pay 1 unit each.
The expected value never moves. Every dollar wagered pays the same 1.24% toll, and the Martingale wagers far more dollars than flat betting — it doesn't defer the house edge, it feeds it faster while rearranging when the losses land.
The Martingale does not beat the house. It manufactures the feeling of consistent small wins while quietly building toward one large, certain loss — the house edge is not eliminated, only deferred and enlarged.
Bankroll Guide
The table max, not your courage, decides the chain length: $10 doubles seven times before $1,280 is refused. One dead chain erases thirty winning sessions' worth of units — plan as if it will happen, because at ~1-in-116 chains, it will.
When to Walk Away
- Any chain reaches five losses — quitting at −$310 beats praying at −$1,270
- You've banked +$300 in closed chains
- You're tempted to raise the base unit after a good run
- You start calculating whether the bankroll 'could absorb one more double'
Every Martingale session ends one of two ways: up a little, or down catastrophically. The streak that kills the chain is not bad luck — at hundreds of hands per session it is a scheduled appointment, and the table limit ensures you cannot double through it.
Try it at the table
$5,000 in virtual chips, no sign-up. Run the Martingale against a real shoe and let the roads keep score.
Take a Seat