Prop-firm survival calculator
Model your own challenge: your firm's limits, your stats — or your own trade history. A 1,000-run Monte-Carlo shows your odds of passing, and what happens to them when your daily stop is actually enforced. Every value below is yours to set; nothing here is a Detent parameter.
That tape is the discipline — every line is the app holding a limit while the trade is live. The calculator below is what holding it is worth.
Pick your account size to fill typical rules for it — then check them against your firm’s actual rulebook. Everything stays editable.
Your daily stop is the limit you plan to quit at — smaller than the firm's. The simulator runs your season twice: once trading through it, once with it enforced.
Use my own trade history (optional)
Replace the three stats above with a bootstrap resample of your own history. Expected columns: date,pnl (optionally date,symbol,side,pnl). Sample row: 2026-05-01,-150.25
Your trades stay in this browser (localStorage) — never uploaded to a server.
Model funded payout (optional)
Models whether enforcement keeps you alive long enough to reach a payout at all — survival to the withdraw threshold, not extra profit, and not a forecast of earnings. Detent doesn't produce returns.
Simulation, not advice. Assumes independent trades. Set your drawdown type and (optionally) a consistency rule and funded-payout model to match your firm; other rules (news/holiday limits, scaling plans) may still differ. Payout figures are simulated EV, not a forecast of earnings. Not affiliated with any prop firm.
The gap between those two pass rates is discipline
Your rules only work if they fire. Detent enforces the limits that keep you on the passing curve — in software, where willpower isn't a factor.