Trailing Drawdown Calculator

Many evaluation and funded futures accounts (Topstep, Apex and similar) use a trailing maximum drawdown: a stop-out level that trails your peak balance up by a fixed amount. If your balance ever falls to that level you fail the account. On most firms the trail stops once it reaches your starting balance, locking there.

Take your highest balance reached and subtract the trailing drawdown amount — that’s your current stop-out level. It rises as your peak rises, until it would exceed your starting balance, at which point it locks at the starting balance and no longer trails.

Once your profit exceeds the trailing drawdown amount, the stop-out level locks at your starting balance and stops following your peak higher. From then on, you can’t lose the account as long as you stay above your starting balance.