For prop traders: drawdown and daily loss, lot size, what it really costs to get funded, and payouts. For founders: a monthly revenue model for a prop firm. Free, no sign-up, open source.
Find where the daily loss limit and the maximum loss sit on your evaluation or funded account, for static and trailing drawdown, and how much you can lose before either one is hit.
Open calculator →Find the lot size that risks exactly the share of your balance you choose, and see how many losing trades in a row your daily loss limit and maximum loss can absorb.
Open calculator →A challenge fee is not the cost of getting funded: most attempts fail. Combine the fee with pass rates to see how many attempts it takes on average and what they cost.
Open calculator →See what a funded account actually pays you after the profit split, a refunded challenge fee and withdrawal fees, and how much profit you need for a target payout.
Open calculator →For founders: model a typical month of a prop firm, from challenge sales to payouts, payment processing, affiliate commission and platform costs.
Open calculator →The pass-rate defaults come from the PropSim Prop Trading Index, published weekly as the free prop firm pass rates dataset.
PropSim runs the whole firm on your brand: storefront and checkout, a risk engine that checks every tick, a trader terminal, payouts, CRM and KYC. Start on the free plan.
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Prop Firm Calculators