Prop Firm Risk Rules
A funded evaluation adds rules a personal account never has to deal with, and most breaches don’t come from one big reckless trade. They come from a trader who plans around their own risk tolerance and forgets the account is running by different rules than they are.
The usual three rules
Most prop firm evaluations combine a daily loss limit, a hard cap on losses within a single day, usually 4-5% of account size, a maximum overall drawdown, a hard cap on total loss from either the starting balance or the account’s peak, commonly 8-10%, and a profit target, a required gain, often 8-10% for the first phase and sometimes lower for a second one, to pass. Every firm sets its own numbers, but that basic shape, daily limit, max drawdown, profit target, is close to universal across the industry. Compare rules across specific firms on the prop firms comparison tool.
Static vs trailing drawdown
The maximum drawdown rule comes in two forms, and the difference matters more than most traders realise going in. A static drawdown is measured from the account’s starting balance and stays fixed regardless of how much profit gets made. A trailing drawdown moves up with the account’s equity high-water mark, so profit made early in the evaluation raises the floor a trader can’t breach. A trader sitting on a 5% gain can lose that entire 5% before breaching the rule, not the original starting-balance cushion they might assume they still have.
Example: a $100,000 account with an 8% trailing drawdown that grows to $106,000. The floor isn’t $92,000, 8% below the starting balance, it’s $97,520, 8% below the new $106,000 peak, a difference that catches traders who checked the rule once at the start and never revisited it as the balance moved.
Why the daily limit breaks people before the max drawdown does
The daily limit is usually the tighter constraint in practice, since it resets to zero available risk every day instead of accumulating slack over the evaluation. A trader with plenty of room left on the overall drawdown can still fail in a single session by breaching the daily limit, which means position sizing has to respect the daily number on every individual day, not just the account’s overall cushion.
The profit target creates its own pressure
A required gain within an evaluation window can push traders toward the behaviour the daily and drawdown limits exist to prevent: oversizing to hit the target faster, or taking lower-quality setups because time is running out. The rules aren’t independent of each other, the target pushes against the limits, and a trader who plans around all three together going in survives that tension better than one who only thinks about them individually as each one gets breached.
Key takeaways
- The three usual rules, daily loss limit, max drawdown, profit target, interact rather than existing in isolation
- Trailing drawdown moves the floor up with profit made, so the cushion isn’t fixed at the starting balance
- The daily limit resets every session and is usually the tighter real constraint day to day, not the overall max drawdown
- The profit target creates time pressure that can push a trader into the exact behaviour the other two rules exist to prevent
Nothing on this page is financial advice. Trade your own account, manage your own risk.
See also: Compare prop firms by drawdown and daily loss rules.
Nothing on this page is financial advice. Trade your own account, manage your own risk.