Pick the Drawdown You Can Actually Hold, Not the One That Looks Best

16 September 2026, 05:00
Kenichiro Sakamoto
0
21
Almost every EA that gets switched off was switched off during a drawdown that the strategy was designed to survive. The account was fine. The person was not. Choosing a risk setting is mostly about picking a number you will still tolerate on the worst day, not the number that looks best in the tester.

The number you can hold is smaller than you think
On a chart, a 30% drawdown is a dip. In an account, it is watching a third of your money disappear over several weeks while the EA keeps opening trades as if nothing is wrong. Most people who say they accept 30% discover their real limit somewhere near 12%. There is no shame in that — it is simply a fact about you, and it is far cheaper to learn it before you fund the account than after.

Work backwards from the exit, not forwards from the target
Do not start with the return you want. Start with the loss at which you would stop the EA, and treat that as fixed. Then set risk so that the strategy's known worst drawdown, multiplied by roughly 1.5 for the drawdown you have not seen yet, still lands above that line. If it does not fit, you do not need a different mindset. You need a smaller lot.

Duration hurts more than depth
A sharp 15% loss that recovers in a week is easier to sit through than a 15% loss that grinds sideways for four months. People quit from boredom and doubt far more often than from a single bad day. When you look at a track record, find the longest stretch between two equity highs and ask yourself honestly whether you would still be running the EA at the end of it.

Decide the rule before you need it
Write down, in advance, the drawdown level at which you will stop, and what you will check when you get there — has it broken its described behaviour, or is it simply losing inside its normal range? Those are different situations with different answers. Deciding in the middle of the drawdown means deciding while it hurts, which is when everyone makes their worst choice.

Half the risk is not half the strategy
Running at half the recommended lot does not make the EA worse. It makes the same edge arrive more slowly, with a drawdown you can actually live with. An EA you keep running at half size will out-earn the same EA at full size that you turned off in month two. Survival is the whole game.

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