You were up for the week. Then a couple of normal losses, and an email: challenge failed. Your account was still above where you started.
If that happened, the rule that caught you was almost certainly a trailing drawdown. It is the rule traders understand least, and it ends a lot of challenges.
What does drawdown mean?
Drawdown is how far your account has fallen from a higher point. If your account was at a thousand and is now at nine hundred, you are in a drawdown of one hundred.
Prop firms, the companies that let you trade their money after you pass a test, use drawdown as a safety rule. They set a lowest allowed balance. Touch it, and the account is closed.
What is a static drawdown?
A static floor is set once and never moves.
Say you start a challenge with ten thousand and the firm allows a loss of one thousand. Your floor is nine thousand. It stays at nine thousand for the whole challenge, whether you make money or not.
That makes profit a cushion. If you grow the account to eleven thousand, you now have two thousand of room before the floor. Static drawdown rewards a good start.
What is a trailing drawdown?
A trailing floor follows your highest balance up, at a fixed distance below it. It moves up when you reach a new high. It never moves down.
Same example: start at ten thousand, allowed loss of one thousand, floor at nine thousand. Now you make five hundred, and the account reaches ten and a half thousand. The floor follows it up to nine and a half thousand.
Then you lose six hundred. Your account is at nine thousand nine hundred. That is still close to where you started. But it is only four hundred above the new floor, much less room than the thousand you started with.
Your profit did not become a cushion. It raised the floor instead.
What is the difference between intraday and end-of-day trailing?
This detail decides a lot.
Intraday trailing follows your account while the trade is still open. If a trade runs up nicely and then comes back before you close it, the floor still moved up to match the high point. You never banked that profit, and the floor rose anyway.
End-of-day trailing only looks at your balance when the trading day closes. A trade that runs up and comes back during the day does not move the floor. Only your closing balance counts.
With intraday trailing, a winning trade that you give back can cost you room without ever showing up as profit. That surprises a lot of traders.
Does the floor ever stop rising?
It depends on the firm. Some firms stop moving the floor once it reaches your starting balance. From then on, it acts like a static floor. Others keep it trailing as long as the account grows.
There is no general rule. The only safe answer is to read your firm's terms and find the exact sentence about when the floor moves and when it stops. PropFirmMap's guide explains the common types, and your firm's own rules page always wins over any guide.
How do you trade with a trailing drawdown?
Know your room every day. Before you trade, write down where the floor is and how much room you have. Not where you started. Where the floor is now.
Size for the room, not the account. If you have four hundred of room, a trade that risks three hundred is close to ending the challenge. Smaller risk per trade keeps one bad day from finishing you.
Watch the trades you give back. With intraday trailing, a big open profit that turns into a small win still pushes the floor up. Decide in advance how you handle trades that run far in your favour.
Have a daily stop. Many challenges also have a daily loss limit. Two or three losses in a row at full size can hit it before lunch. Journaling a prop firm challenge covers the daily limit and the other common rules.
What should you log during a challenge?
Everything you log normally, plus the floor and your room at the start of each day. When you review, you can then see which trades ate your room and whether they followed your plan.
A trade taken to win back a loss is the fastest way to reach the floor. Is it your strategy or how you traded it? explains how to separate those trades from the rest.
Other questions traders ask
Is static or trailing drawdown better for the trader?
Static is usually easier, because profit becomes room. Trailing is harder, because profit raises the floor. Many traders choose firms partly on this rule.
Does a trailing drawdown use my open profit?
With intraday trailing, yes: the floor follows your highest point, including open trades. With end-of-day trailing, only your balance at the close of the day counts.
How much should I risk per trade in a challenge?
Little enough that several losses in a row do not reach your floor or your daily limit. Work it out from your room, not from the account size.
Read next:
EdgeFlow does not track prop firm limits for you. What it does is keep a separate log per account. It shows your trades in R, which is your result in units of risk, and whether you followed your rules. See how it measures following your rules. Always check the floor against your firm's own dashboard.