The four prop-firm drawdown models, and why the difference ends challenges

Most prop challenges do not end because the trader was bad. They end because the trader believed they had $7,000 of room when they had $2,400.

The difference is the drawdown model, and there are four of them in common use.

1. Static drawdown

Your floor is fixed at the starting balance minus the maximum loss, and it never moves.

On a $100,000 account with a 10% maximum loss, your floor is $90,000 from the first day to the last. Every dollar of profit is a dollar of extra room, permanently.

This is the friendliest model and the easiest to plan around. If you are up $6,000 you can lose $16,000 before you breach.

2. Trailing balance drawdown

The floor follows your closed balance upwards and never comes back down.

Same account, same 10%. You bank $6,000, so your high-water balance is $106,000 and your floor rises to $96,000. Your room is still $16,000 from the peak but only $10,000 from where you now stand — profit has bought you nothing.

The trap here is banking a good week and then thinking of the profit as a buffer. It is not. The floor moved with it.

3. Trailing equity drawdown

The floor follows your highest equity, including unrealised profit.

This is the one that catches people out. A trade that goes $2,000 in your favour and comes back to breakeven has permanently raised your floor by $2,000. You made nothing, and you have less room than you started the trade with.

On this model, giving back an open profit is not neutral. It is a cost.

4. End-of-day trailing drawdown

Common on futures programs. The floor trails your end-of-day balance, and on most programs it stops trailing once it reaches the starting balance plus a buffer.

Intraday spikes do not count against you, which makes it gentler than trailing equity. But once you are profitable the floor typically locks at your starting balance, and from that point every drawdown is measured against where you began.

Why it matters more than the profit target

The profit target is the number in the advert. The drawdown model is the number that decides whether you pass.

Two traders with identical trade sequences can get opposite results on two firms whose headline rules look the same, purely because one trails equity and the other does not. The same is true of the daily loss rule: measured from the starting balance, from the opening balance of the day, or from the highest equity of the day, it produces three different limits.

How to check before you buy

Take your actual trade history and replay it against the specific rules of the program. Not a similar program — that one, with its drawdown model, its daily loss basis and its consistency rule.

Then do it again with the trades in a different order. Sequence is what kills challenges: the same trades arriving on different days can breach a daily limit the real sequence never came near. If a program only passes on the exact order your trades happened to arrive in, it does not really pass.

Alpha Ledger's prop-firm simulator does both, across every firm in the directory, and reports the true cost of a pass including the resets you should expect at that pass rate.