Smart Prop Trader Risk of Ruin Calculator
10/5 evaluation survival math. Calculate the survival odds of your strategy against Smart Prop Trader's 10% drawdown rule before paying the evaluation fee.
Pass your evaluation. Protect your funded account.
Free classic calculator below. For 10,000-path Quick Test against Smart Prop Trader's exact drawdown rule, with the recommended risk level to maximize pass probability, open the app.
Public rules only. Educational, not affiliated with any prop firm. Rules change: verify with your firm before trading.
Your strategy vs Smart Prop Trader's rules
Smart Prop Trader offers 4 sizes from $10,000 to $200,000
Survival grade
A
Ruin probability
0.6%
Losers to bust
10(5 to hit daily)
Your strategy has a positive edge of 25.0% per trade. Survival odds look strong, but Monte Carlo simulation against real market data will give you a more realistic picture.
About Smart Prop Trader's rules
Smart Prop Trader (SPT) offers 1-Step and 2-Step evaluations with up to 90% profit splits. Standard 10% max drawdown and 5% daily loss apply across most account sizes.
Key risk rule
Standard 10/5 rules. 1-Step variant compresses time horizon, increasing required win-rate or R:R to maintain low ruin probability.
| Account | Size | Max DD | Daily | Profit Target |
|---|---|---|---|---|
| $10K SPT | $10,000 | 10% | 5% | 8% |
| $50K SPT | $50,000 | 10% | 5% | 8% |
| $100K SPT | $100,000 | 10% | 5% | 8% |
| $200K SPT | $200,000 | 10% | 5% | 8% |
Rules summarized from publicly published information as of 2026-04-17. Always verify current terms directly with Smart Prop Trader.
Why most Smart Prop Trader traders fail
The 10% drawdown ceiling looks generous in isolation. The math says otherwise. At 2% risk per trade, you bust after just 5 consecutive losers. With a 50% win rate, that sequence happens roughly once every 32 trades — and most evaluations require enough activity that you'll see it.
Smart Prop Trader's static drawdown is more forgiving than trailing rules, but the daily loss limit is the silent killer. Most evaluation failures happen on a single bad day, not from accumulated drawdown.
The fix is structural, not tactical. Reducing risk per trade from 2% to 1% cuts your expected ruin probability by roughly 75%. Reducing it to 0.5% effectively eliminates rule-based failure for most positive-edge strategies.
Run real Monte Carlo simulation
This calculator uses the classical risk of ruin formula. For 10,000-path Monte Carlo Quick Test against real market volatility, with Smart Prop Trader's drawdown rule applied and the recommended risk level to maximize pass probability, use the iOS app.