Reference points
- −10% drawdownneeds +11.1%
- −20% drawdownneeds +25.0%
- −30% drawdownneeds +42.9%
- −50% drawdownneeds +100.0%
- −75% drawdownneeds +300.0%
Result
The curve steepens fast — which is the mathematical argument for a hard drawdown breaker set in advance, before you need it.
The most underrated fact in trading is that losses and gains are not symmetric: a 20% loss needs a 25% gain to recover; a 50% loss needs 100%. The deeper the hole, the disproportionately harder the climb out — which is the entire mathematical case for capital protection.
This calculator makes the asymmetry concrete. If a number here ever surprises you into trading smaller, it has done its job.
The formula
Required gain = drawdown ÷ (1 − drawdown). A 10% drawdown needs 11.1% to recover, 25% needs 33.3%, 50% needs 100%, and 75% needs 300%. The curve is gentle at first, then vertical — which is why risk rules concentrate on preventing the deep drawdowns, not the shallow ones.
The practical application is choosing a maximum-drawdown breaker in advance: an account-level loss at which all trading stops for review. Set it where recovery is still realistic (10–15% is common) rather than where it becomes heroic. Decide the number calmly now, because at the moment it triggers you will want to override it — and that impulse is what the rule exists to stop.
Frequently asked questions
Why does a 50% loss need a 100% gain?
Because the gain is computed on the smaller base. Drop $1,000 to $500 and you lost 50% — but getting from $500 back to $1,000 means doubling what remains. Every percentage lost shrinks the base your recovery must be earned on.
What is a reasonable maximum drawdown limit?
Many disciplined traders and funds work with 10–20% as the stop-and-review threshold. At 10% the required recovery is 11.1% — demanding but plausible. At 40% it is 66.7% — a level at which most traders take exactly the oversized risks that finish the account.
Should a drawdown limit be automated?
Ideally yes. The limit's whole purpose is to act when your judgment is most compromised, which is precisely when a manual rule gets rationalized away. An automated breaker that halts trading at the pre-set level — the way RezSync Algo's guardrails do — removes the negotiation.
Educational arithmetic, not financial advice. Contract specifications vary by broker — confirm pip and contract values against yours. Trading involves substantial risk of loss; forward-test on a demo account before any live decision.
This math, enforced automatically
RezSync Algo runs these calculations on live broker data for every trade — stop-first sizing, after-cost checks, and a hard drawdown breaker. Demo-first, live strictly opt-in, no promised returns.