Glossary · Prop Firms
Maximum Loss Per Trade
Maximum loss per trade is a cap some prop firms place on how much a single trade, or group of positions treated as one "trade idea," can lose before the account breaches. It differs from a daily loss limit and overall maximum loss, and firms may apply it to funded accounts, evaluations, or both.
Why it matters
This rule forces position sizing discipline on a per-trade basis, stopping one oversized or poorly managed trade from consuming a large share of the account's total allowable risk. Firms typically treat a breach of this limit as a hard breach, meaning immediate account closure rather than a warning or grace period, so there is no room to average down or wait it out.
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Example
Imagine a funded account where the firm sets a per-trade-idea loss cap. A trader opens a single position sized aggressively enough that its loss alone reaches that cap. The account closes immediately, even though the trader's daily loss limit and overall maximum drawdown were both still comfortably intact. The breach comes purely from concentrating too much risk in one trade.
Common misconception
Traders often assume this limit only applies to a single order ticket. In practice, many firms define a "trade idea" more broadly: multiple concurrent positions on the same instrument, or a losing trade closed and then reopened within a short window (sometimes minutes, sometimes up to an hour), can be combined into one trade idea for this rule. That means splitting size across several smaller entries, or re-entering quickly after a stop-out, can still trigger a breach even though no single order hit the limit on its own. Some firms also count the worst unrealized loss reached during the trade idea, not just the final realized result.
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See also
Use the Compare Prop Firms tool to check which listed firms apply a per-trade or per-trade-idea loss cap, and at which account stage, before starting a challenge.
Sources
Risk disclaimer: Trading carries a substantial risk of loss and is not suitable for everyone. Prop-firm evaluations charge fees and most traders do not pass. Nothing here is financial advice; figures can change, so verify current terms with the firm before purchasing.
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