About

A Monte Carlo simulator, built for the rules that actually break accounts

The market is full of pass-rate calculators that ignore trailing drawdown, daily-loss caps and consistency rules. We built PropFirmBacktester because those rules cause 80% of fails — and ignoring them in software is how traders end up paying for evaluations they were never going to pass.

What we do differently

  • Trade-by-trade simulation. 10,000 runs per scenario, each played in sequence against the exact ruleset.
  • Every rule modeled. Static and trailing drawdown (end-of-day and intra-trade), daily-loss caps, consistency rules, min trading days, profit targets.
  • Honest outputs. Pass probability, expected cost-per-funded-account, break-even withdrawal, and a breakdown of what killed the failing runs.

Who it's for

Traders evaluating prop firm offers, deciding which account size to buy, sizing risk-per-trade, or trying to figure out why their last three evals failed. If you've ever paid for an evaluation and wondered whether the firm's rules were tilting the odds, this tool answers that quantitatively.

What we don't do

We don't sell trading signals, run a Discord, or take affiliate fees from prop firms — that's why the ruleset comparisons stay honest. We charge $49/month for the software, that's the whole business model.

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