Free tool
Trailing Drawdown Calculator
Enter your starting balance, trailing drawdown amount, and current numbers. See your floor, your buffer, and how a locking drawdown changes the math. Works for any prop firm rule — Apex, TopStep, Tradeify, MyFundedFutures, TakeProfitTrader, and others.
Highest balance reached. Floor ratchets up with this.
You have $2,500 of buffer between your current balance and the trailing drawdown floor. Size positions so a worst-case loss stays well inside this.
How the calculator works
Floor calculation. For a pure trailing drawdown, the floor equals the highest balance achieved minus the trailing drawdown amount. The floor moves up with new highs and never moves back down. If you haven’t made new highs yet, the floor is your starting balance minus the trailing drawdown.
Lock variant. Some firms (TopStep is the standard example) stop trailing once your account hits a designated balance — usually the starting balance plus the profit target. Toggle the lock option, enter the profit target, and the calculator stops moving the floor once you reach the lock balance. Above that point, the drawdown is effectively static.
Buffer interpretation. Buffer is the distance between your current balance and the floor. Anything less than 25% of your trailing drawdown amount is shown as a danger zone — a single ordinary losing trade could close the account. Plan position sizing to keep a healthy buffer.
What it doesn’t calculate. Daily loss limits are a separate rule that’s also active. This calculator only models the trailing drawdown. If you breach your daily loss limit, the account closes regardless of how much trailing-drawdown buffer you have.
Common trailing drawdown setups by firm
Always verify with the firm’s current rulebook before paying evaluation fees — these change. As of writing:
- Apex Trader Funding: pure trailing drawdown that locks at $100 above the threshold once you graduate to PA (Performance Account). Common amounts: $1,500 on $25K, $2,500 on $50K, $3,000 on $100K.
- TopStep: trailing drawdown that locks at the profit target. Maximum loss limits vary by account size.
- Tradeify: trailing drawdown rules vary by program; check the current rulebook.
- MyFundedFutures, TakeProfitTrader, TradeDay: each publishes their own variant; lookup their current docs for amounts and lock behavior.
Manage drawdowns across multiple accounts
PropCopy enforces per-account daily loss limits and lets you size positions independently per follower.