Anti-martingale calculator
Computes how the size grows through a winning streak: both calculation variants from the course, the result of a full series and what is left of it if the next trade turns out to be a loss.
Full streak
+$731.25
Result of 4 wins in a row
Same trades at base
+$360.00
The same trades without growing the size
Last trade of the streak
$337.50
×3.4 the base size
Result over all trades
$0.00
Steps played: 0
Next trade size
$100.00
You are at the base size
Anti-martingale grows sizes out of profit, so the risk of a single trade never exceeds what the streak has already earned. The price is that the yield depends on wins arriving back to back.
How anti-martingale works
Anti-martingale is the mirror image of martingale. The size grows after every win and returns to the base on any loss. The point is that only earnings go back to work: the risk of a single trade never exceeds what the series has already brought in.
The rules:
- the first trade is the base, 1–2% of the deposit;
- after a win the size increases;
- after a loss — an immediate return to the base;
- when the series limit is reached, the profit is booked and everything starts from the base again.
Two ways to calculate
Variant A — multiplier. Each next trade equals the previous one times a fixed factor. With a 1.5 multiplier and a $100 base the series looks like this:
| Step | Size | Profit (90%) | Running total |
|---|---|---|---|
| 1 | $100 | +$90 | +$90 |
| 2 | $150 | +$135 | +$225 |
| 3 | $225 | +$202.50 | +$427.50 |
| 4 | $337.50 | +$303.75 | +$731.25 |
The same four trades at the base size would have brought only +$360. On the fourth step one trade earns more than the first two together.
Variant B — with the profit. The next trade equals the previous one together with its profit, so the multiplier is set by the payout and equals 1 + payout. The same four steps yield about +$1,203 — roughly 1.65 times more. But it also climbs more steeply, which makes the limit critical here.
What the calculator shows
The headline block is not the total of a successful series but the line about the next trade: how much of the series survives if that trade is a loss. While this number stays positive, the series is protected. As soon as it goes negative the method stops being safe: one trade takes more than the whole series has accumulated.
Where people go wrong
- Not resetting the size after a loss. At that point it is no longer anti-martingale but an ordinary progression with floating rules.
- Using variant B at a low payout. At an 80% payout the fifth step of variant B eats the entire result of the series — the calculator shows it on the next-trade line.
- Treating the method as a way around statistics. It scales the result; it does not improve your win rate.
FAQ
How does anti-martingale differ from martingale?
In direction. Martingale grows the size after a loss and risks the deposit; anti-martingale grows it after a win and risks only what has already been earned. A run of five losses destroys an account under martingale — under anti-martingale it costs five base sizes.
Which calculation variant should you choose?
Variant A with a 1.5 multiplier is the default: growth is noticeable, and the accumulated profit of the series is not wiped out by a single trade. Variant B (the previous trade together with its profit) yields more over the same series, but at a payout below 100% the fifth step is already capable of eating the whole result. Variant B only makes sense with a high payout and a short limit.
Why cap a winning streak?
To lock the result in. Without a limit the size keeps growing until a loss arrives — and it will arrive, and it will take the largest trade of the series. The limit closes the series at its peak: what you earned moves out of harm's way, and the next trade starts from the base size again.
Does anti-martingale increase profit?
It increases what you get out of winning streaks, but it changes neither the payout nor your win rate. Below the breakeven threshold the method still loses money — the loss simply accumulates more slowly than under martingale, because only the lucky runs scale up.
Is the method suitable for a beginner?
Yes, it is psychologically easier than any chase: the increased size goes on after a win, on a growing account, rather than after a loss on a falling one. Start with variant A, a limit of 3–4 steps and a base within 1–2% of the deposit.