Free tool · broker-agnostic

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.

Your challenge
Profit target ($)
Firm max daily loss ($)
Max drawdown ($)
Evaluation window (days)
Your trading
Win rate (%)
Average win ($)
Average loss ($)
Trades per day
Your daily stop ($)

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.

Willpower only
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Stop enforced
--
--
chance of passing your challenge — same season, run twice
Your results // 1,000 runs
seeded Monte-Carlo · your inputs · enforced-stop paths shown
passed   failed
Day 30 / 30 — scrub the season
Hover a path to inspect it · tap to pin
1,000 simulated season outcomes · your inputs · illustrative
1,000 runs
-- passed -- failed (limit / drawdown) -- ran out of days
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Pass rate, stop enforced
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Pass rate, willpower only
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Daily-limit breaches, willpower
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Median days to pass
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Net EV, enforced (eval only)
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p5 … p95 ending equity

Simulation, not advice. Assumes independent trades and drawdown measured from the starting balance; your firm's rules (trailing drawdown, consistency requirements) may differ. Eval phase only — no funded/payout modeling. 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 — server-side, where willpower isn't a factor.