Drawdown rules and daily loss limits
How drawdown, trailing drawdown, and daily loss limits work in a prop firm evaluation, and why they are the rules that actually end accounts.
Part of the Prop Firms Explained track on Agenticks. About 9 minutes, written for a intermediate reader.
Most people who fail a prop firm evaluation do not fail because they could not find a winning trade. They fail because they tripped a rule they did not fully understand. The two rules that end the most accounts are the drawdown limit and the daily loss limit. Neither one cares whether your idea was good. They are hard floors, and the moment your account touches one, the attempt is usually over.
Drawdown is the drop from a high point in your account down to a later low. If your balance climbs to 52,000 and then falls back to 49,000, you are in a 3,000 drawdown from that peak. In a prop firm, the firm sets a drawdown floor: the lowest your account is allowed to go before it is failed. That floor can be measured against your starting balance, against your highest balance, or against your live equity tick by tick. Where the floor is anchored matters as much as how big it is.
The floor is the rule, not the target
Your profit target tells you when you pass. The drawdown floor tells you when you are done. People obsess over the target and skim the floor, which is backwards. The floor is the rule that actually ends accounts, so it deserves the closer read.
There are two common shapes for that floor. A maximum drawdown is usually a fixed amount measured from your starting balance. On a 50,000 account with a 2,000 maximum drawdown, your equity simply cannot go below 48,000, ever, no matter how high you climbed first. A trailing drawdown is different. It follows your account higher. If your balance rises by 1,000, the floor rises by 1,000 too, locking in part of that gain. The catch is that a trailing floor only moves up, never back down, so the room beneath you shrinks as you make money.
Trailing drawdown is where a lot of accounts quietly die. Suppose your starting floor is 2,000 below your balance. You catch a good run and your equity spikes to plus 1,500 intraday. If the firm trails off your highest equity, the floor just jumped up by 1,500. You give a normal pullback back to plus 300, which feels fine, and you breach anyway because the floor moved up under you while you were not watching. An end-of-day drawdown is gentler: it only ratchets the floor up based on your closing balance each day, so intraday swings that recover do not move it. Same idea, very different room to breathe inside a trade.
The daily loss limit is a separate tripwire that sits on top of the drawdown floor. It caps how much you can lose in a single session, and it resets each day. This is the rule that catches blow up days. You could be 4,000 above your total drawdown floor, plenty of room on paper, and still fail because you lost more than the daily cap allows in one afternoon. Many firms measure the daily limit against your live equity, including open positions, not just your closed trades. That means an unrealized loss on a position you are still holding can breach the limit before you ever click to close.
Two separate tripwires, not one
Total drawdown and the daily loss limit are independent. Staying above your total floor does not protect you from the daily limit, and surviving a quiet day does not protect you from total drawdown over time. An account can end on either one.
- Maximum drawdown
- A fixed floor below your starting balance that never moves
- Trailing drawdown
- A floor that rises with your balance and locks in gains
- Daily loss limit
- The most you can lose in one session before the day is cut
- Breach
- The moment a hard rule is violated and the account is failed
Your account has a 2,000 trailing drawdown. You run profit up to plus 1,800 intraday, the floor trails to match, then you give back to plus 500. What most likely happened? The trailing floor rose with the spike, so giving back 1,300 from the high can breach it Right. The floor trailed up to roughly 200 below your plus 1,800 high. Falling to plus 500 is a give back of about 1,300 from the peak, which can trip a 2,000 floor that has already climbed under you.
trailing loss breach
Put this trailing-drawdown failure in the order it actually unfolds.
- Account opens with the floor set a fixed amount below the starting balance
- A winning run pushes equity to a new high
- The trailing floor ratchets up to follow the new equity high
- A normal pullback from the high drops equity below the raised floor
- The breach triggers and the account is failed
Here is the honest part. These rules are not bugs, they are the product. Firms design drawdown and daily limits to be survivable for steady traders and punishing for anyone who sizes up to chase the profit target fast. That is also part of how the business works: a large share of paid evaluations end on a loss rule. None of this means passing is impossible. It means the floor deserves more of your attention than the target, and that reading the exact rule document, anchor, measurement basis, hard or soft breach, beats assuming all firms work the same way.
You can read a firm's loss rules
You can now tell maximum from trailing drawdown, explain why a daily loss limit is a separate tripwire, and spot how a trailing floor breaches an account that still looks green.
Common questions
- What is the difference between drawdown and a daily loss limit?
- Drawdown is the total amount you can lose from a peak or starting balance over the whole evaluation. A daily loss limit is a separate cap on how much you can lose in one trading day. You can stay well above your total drawdown floor and still fail by tripping the daily limit on a single bad day.
- Why does trailing drawdown end so many accounts?
- A trailing drawdown floor rises as your balance rises, so part of every new gain becomes locked in. If the floor trails your intraday equity, it can ratchet right up under an open position, then a normal pullback breaches it even though your closed balance still looks healthy.
- Does breaching a loss limit always end the account?
- Not always. Some breaches are hard and end the evaluation immediately. Others are soft and only lock trading for the rest of the day. The firm's rule document is the only place that tells you which type a given limit is.
Terms defined in this lesson
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