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    Prop Firm Challenge Calculator

    Find your optimal risk per trade to minimize cost and time to funding. Powered by 100,000 Monte Carlo simulations.

    Strategy Settings

    Strategy has positive expectancy ✓

    Challenge Settings

    Funded Account

    Understanding the Calculator

    What is Monte Carlo simulation?

    A Monte Carlo simulation runs thousands of random trading scenarios using your strategy's win rate and risk-reward ratio. Each simulation trades one by one until either the profit target is hit (pass) or the drawdown limit is breached (fail). By running 10,000 scenarios per risk level, we get statistically reliable pass rate estimates.

    How is pass rate calculated?

    For each risk level, we simulate 10,000 independent challenge attempts. Each attempt trades until the profit target is reached or the max drawdown is hit. The pass rate is simply the percentage of attempts that successfully hit the target before blowing the drawdown.

    Initial vs EOD vs Trailing Drawdown?

    Initial drawdown measures losses from your starting balance — a fixed floor. EOD (End of Day) also uses a static threshold from your starting balance but is only checked at the close of each trading day, not intraday. Trailing drawdown tracks from your highest balance reached — much stricter because as your account grows, the "floor" rises with it.

    What does 'Optimal Risk' mean?

    The optimal risk level minimizes your expected total cost to get funded. Lower risk gives higher pass rates but takes more trades. Higher risk is faster but fails more often. The optimal point balances both to minimize the total money spent on challenge fees.

    What is the 90% confidence cost?

    The expected cost is a mathematical average — you might spend more or less. The 90% confidence cost is the budget you need for a 90% probability of passing at least once. This is what you should actually plan to spend.

    Single Phase vs Two Phase?

    Single-phase challenges require hitting one profit target. Two-phase challenges require passing an evaluation phase (full target) then a verification phase (half target) — both must be passed consecutively. Two-phase is significantly harder and more expensive.