How Big a Drawdown Should Make You Stop Trading?

A drawdown limit chosen halfway through a losing streak is nearly always too loose. It gets picked by the part of you that wants the next trade. By then the losses have made recovery feel urgent, every setup looks like the one that fixes things, and the number that seems reasonable is simply the one that lets you keep clicking.

So set it on a quiet day. Write it down. The example below builds one hypothetical ladder on a $40,000 account, with every rung measured from the account’s highest value.

Why do the rungs sit so close together?

Recovery gets steeper as you fall. To get back to even, you need a gain equal to the dollars lost divided by the dollars left, and since the dollars left keep shrinking, the required gain climbs faster than the loss that caused it.

Twice the loss means more than twice the climb. The loss recovery calculator gives the figure at any depth. Maximum drawdown covers how the peak-to-trough measure is taken.

The steps

1. Measure from the peak

Use the highest account value, never the starting deposit. Say the account grew to $44,000 and then slid to $39,600. That is 10% down from the high. The fact that it is still close to where it began is no comfort, because the streak that took $4,400 is the thing the ladder exists to catch.

2. Set a review level: 5% in the example

Size stays the same at the first rung. You stop and read the recent trades against your written rules. Were the stops where the plan put them? Did you take trades the plan would have skipped? A 5% drawdown with every rule followed can be ordinary bad luck. The same drawdown with a string of impulse entries is a behavior problem.

3. Set a size cut: 10% in the example

Halve the risk on every new trade. At 1% of $40,000 you were risking $400. At 0.5% of $36,000 you now risk $180.

Yes, that slows the recovery. It is meant to. If the losses are coming from a method that has stopped working or a market that no longer suits it, trading at half size means the next leg down takes roughly twice as many losing trades to arrive, and those extra trades are the time you need to notice what has changed before the account reaches the rung where you have to stop entirely.

4. Set a hard stop: 20% in the example

Stop trading live. Keep placing the same trades on paper, with the same stops and the same journal. At this depth the account needs 25% to get back to $40,000, and each further loss at full size makes the climb disproportionately worse.

How long do you stay on paper? Longer than feels necessary. A calendar period on its own proves little, so tie the return to the review being finished and to a run of paper trades, of a length you chose before the drawdown began, in which every entry, stop and exit matched the written plan.

5. Write the restart rules now

Coming back is the harder half. Write these rules on the same quiet day as the stops.

Return only after a written review. Name the specific trades that went wrong, with the chart and journal entry for each. Say what you are changing, or why nothing needs changing.

Return at reduced size. Half the old risk per trade is a sensible default. On the $32,000 account, 0.5% is $160 a trade, which feels small, and that is the point: the first trades back test your discipline more than your method.

Scale up only on evidence. That means either a new equity high, or a set number of trades that followed every rule, a number you fix in advance and do not renegotiate on the afternoon you are bored of trading small.

What about prop firm drawdown limits?

A funded account comes with its own limit. Breach it and the account ends. Treat the firm’s figure as a cliff edge, and set your own ladder well inside it, since the firm’s rule page applies the limit mechanically and takes no account of the trade you were sure would turn things around; the mechanics of a fixed limit are covered under static drawdown.

Where does this fit in a risk plan?

Drawdown rules sit on top of risk per trade. They only work if each loss is already capped. At 5% risk per trade, five losses in a row at full size take an account down about 22.6% (1 - 0.95 x 0.95 x 0.95 x 0.95 x 0.95), past every rung before the ladder has done its job.

The full sequence, from sizing a single trade to writing a one-page plan, is taught in nobody rebuilds from zero. Its lesson on drawdown limits and getting back to even works the ladder through in more detail.