Trade expectancy is the single most important metric for evaluating a trading strategy. It tells you how much you can expect to earn (or lose) on every trade, on average.
What Is Trade Expectancy?
Expectancy measures the average amount you win or lose per trade over a large sample. It combines your win rate with your average win and loss sizes into one number.
A positive expectancy means your strategy makes money over time. A negative expectancy means you’re slowly bleeding capital, regardless of how good individual trades feel.
The Expectancy Formula
Expectancy = (Win Rate × Average Win) - (Loss Rate × Average Loss)
Where:
Win Rate = percentage of trades that are winners
Loss Rate = 1 - Win Rate
Example: Profitable Strategy
- Win Rate: 55%
- Average Win: ₹5,000
- Average Loss: ₹3,000
Calculation:
- Win Component = 0.55 × ₹5,000 = ₹2,750
- Loss Component = 0.45 × ₹3,000 = ₹1,350
- Expectancy = ₹2,750 - ₹1,350 = ₹1,400 per trade
Over 20 trades per month, this strategy is expected to generate ₹28,000/month.
Example: Unprofitable Strategy
- Win Rate: 40%
- Average Win: ₹2,000
- Average Loss: ₹1,500
Calculation:
- Win Component = 0.40 × ₹2,000 = ₹800
- Loss Component = 0.60 × ₹1,500 = ₹900
- Expectancy = ₹800 - ₹900 = -₹100 per trade
This strategy loses money no matter how many trades you take. More trades simply means faster losses.
Understanding Expectancy Ratio (R-Multiple)
The expectancy ratio normalises expectancy by dividing it by the average loss:
Expectancy Ratio = Expectancy / Average Loss
This gives you a value in R-multiples, making it easy to compare strategies:
| Expectancy Ratio | Quality |
|---|---|
| < 0 R | Unprofitable |
| 0 - 0.2 R | Marginal edge |
| 0.2 - 0.5 R | Decent edge |
| 0.5 - 1.0 R | Good edge |
| > 1.0 R | Excellent edge |
Why Win Rate Alone Is Misleading
Many traders obsess over win rate, but a high win rate doesn’t guarantee profitability:
- A 90% win rate with ₹100 average wins and ₹2,000 average losses has a negative expectancy of -₹110 per trade
- A 35% win rate with ₹5,000 average wins and ₹1,000 average losses has a positive expectancy of ₹1,100 per trade
The second trader, despite losing most trades, makes 10x more per trade than the first.
How to Improve Your Expectancy
1. Improve Win/Loss Ratio
Focus on setups where the potential reward is at least 2x the risk. Use the Risk-Reward Calculator to evaluate each trade.
2. Cut Losses Faster
Reducing your average loss directly improves expectancy. Use tight, logical stop losses rather than arbitrary ones.
3. Let Winners Run
Many traders take profits too early. Consider using trailing stops to capture larger moves on winning trades.
4. Be Selective
Not every setup is worth taking. Filter for high-probability setups and skip marginal ones.
How JournalPlus Helps
You just estimated your expectancy using rough numbers. But are those numbers accurate? Most traders overestimate their win rate and underestimate their average loss — which makes a losing strategy look profitable on paper.
JournalPlus calculates your real expectancy from actual trade data. No guessing your win rate or average win — it’s computed from your history. You’ll see expectancy broken down by strategy, by time period, and by market condition. When your edge disappears, you’ll know immediately — not after blowing through your profits.
Your calculator estimates. JournalPlus measures the truth.
