Prop firm challenge calculator

A proprietary trading firm sells an evaluation: you trade a simulated account under rules, usually a profit target, a daily loss limit and a maximum loss. If you reach the target without breaking a rule, you are given a funded account and share the profits with the firm. The fee is the cost of the attempt, which is why the odds are worth calculating first.

The daily loss limit caps what you can lose within one day, measured from the balance or equity at the start of that day. The maximum loss caps the total fall from the starting balance (static) or from the highest balance reached (trailing). Breaking either one normally ends the account. Check each firm's own definition of when the day resets and whether floating losses count.

By simulation. The calculator plays 1,500 challenges trade by trade: each trade is a win with the probability you enter, paying your reward-to-risk multiple times the amount risked, or a loss costing that amount. The run ends at the profit target (once the minimum days are met), at the daily limit or at the maximum loss. The random sequence is seeded so the same inputs always return the same figure.

The table under the result answers it for your numbers: it replays the same plan at 0.25% to 2% risk. With a positive edge the pass chance usually peaks at a modest risk and falls as risk rises, because larger swings reach the limits sooner; with a negative edge no risk level helps. Whatever the table says, keep one loss well inside the daily limit.

It works for any firm that publishes a profit target and loss limits: enter that firm's own numbers. The calculator does not preload any firm's rules, because they change, so read the current rules on the firm's challenge page and enter them yourself.

No. It models the profit target, the daily limit, the maximum loss, the minimum trading days and static or trailing drawdown only. Rules about trading around news, lot-size consistency, holding over the weekend or the number of trades are outside the model.

No. It performs arithmetic and a simulation on the figures you enter. A challenge fee is money at risk, a pass chance is not a promise, and no result here is a recommendation to buy an evaluation or to trade.