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Prop Firm Challenge Calculator
Estimate how a CFD prop challenge could behave under your win rate, payoff ratio, risk per trade and account drawdown rules.
A prop firm challenge calculator runs many simulated trade paths through the rule set you enter. This page models CFD account-equity rules: profit target, daily loss, total or trailing drawdown, minimum trading days and optional best-day cap. The pass rate is a model estimate under those assumptions, not a prediction or promise.
Challenge setup
CFD rules
Model estimate
See what a real trade would cost you
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Educational tools for non-US traders · not directed at US persons.
How it works
What this calculator models
This calculator is for CFD-style prop challenges that use account equity percentages. It tests each simulated path against a profit target, daily loss limit, total loss limit, optional trailing drawdown, minimum trading days and optional best-day share cap.
How the Monte Carlo works
Each path starts with the account size you enter. For every day, the engine samples a trade count around your trades-per-day input, then marks each trade as a win or loss from the win rate. A win adds risk amount × R; a loss subtracts the fixed risk amount. After each trade, the same CFD challenge engine checks daily and total drawdown lines.
The simulation uses 10,000 paths and a deterministic seed. The same inputs should therefore produce the same output, which makes the result easier to audit and share.
Rules checked on each path
- Profit target. The account must reach the target equity before the max-day window ends.
- Daily loss. The daily floor is measured from the day opening equity.
- Total drawdown. Static drawdown uses the initial balance. Trailing drawdown follows the end-of-day equity high and can optionally lock at the initial balance.
- Minimum days. A path can touch the target early but only passes after the minimum trading days condition is met.
- Best-day cap. When enabled, the tool reports whether one profitable day accounts for too much of net profit.
Important limits
Preset values are only starting points. Prop firm terms change, and different account sizes or phases can use different rules. Verify the current rules on the firm's own site before relying on any output. PipGauge is for education, is oriented to non-US users, and does not provide financial advice. If affiliate links are added later, any affiliate disclosure should sit next to the call to action.
Frequently asked questions
Is this a prediction of passing a prop challenge?
Which prop rules are supported?
Why use a deterministic seed?
Should I use the presets as official rules?
What does EV per attempt mean?
pass rate × estimated first payout - challenge fee. It is a simplified expected-value line for the inputs, not a full business case for buying a challenge.