Risk-Reward Ratio: The Math Behind Profitable Trading
Profitability in trading is not magic — it's math. And the most important formula is the risk-reward ratio.
What Is Risk-Reward Ratio?
The risk-reward ratio (R:R) compares what you're risking to what you can win. A 1:2 ratio means: you risk €1 to win €2.
For example:
- Entry: €100
- Stop loss: €95 (risk = €5)
- Take profit: €110 (reward = €10)
- R:R = 5:10 = 1:2
Why R:R Determines Whether You Win
The math is ruthless. Here’s how many winning trades you need to break even:
| R:R | Required Win Rate | |-----|------------------| | 1:1 | 50% | | 1:2 | 33% | | 1:3 | 25% | | 1:4 | 20% |
With a 1:2 ratio, you only need 34% winning trades to be profitable. That's very achievable.
With a 1:1 ratio, you need 50%. That's much harder, as you still have to cover costs.
The Pitfall of a Poor R:R
Many beginners unconsciously have a poor R:R. They take profits quickly (e.g., 10 pips) but let losses run (e.g., 30 pips). Their R:R is 3:1 — against themselves.
To be profitable with a 3:1 R:R (against yourself), you need 75% winning trades. That's nearly impossible.
Even if you win 60% of your trades (which is quite good), you still lose with a 3:1 R:R against yourself:
- 60 winning trades x €10 = €600
- 40 losing trades x €30 = €1,200
- Result: -€600
How to Get a Good R:R
1. Define Your Stop in Advance
Without a stop loss, you can't calculate R:R. Always set your stop first, then your take profit.
2. Let Profits Run
The biggest mistake is taking profits too early. If you want a 1:2 or 1:3, you must let profits run until the target.
3. Accept That Not Every Trade Reaches Your Target
Sometimes the trade doesn’t reach your take profit. That’s okay. But if you consistently aim for 1:2 or better, you will be profitable in the long run.
4. Use Trailing Stops
Instead of a fixed take profit, you can use a trailing stop. This way, you let the trend determine how much you win.
The Reality of R:R
In practice, a 1:2 R:R is not always achievable. Sometimes the market doesn't offer it. Then you can choose:
- Not to trade — if the R:R isn't good enough
- Accept a lower R:R — but then your win rate must be higher
The key is: know what your R:R is before you enter.
A Simple Calculation
Suppose you trade 100 trades:
- R:R = 1:2
- Risk per trade = €100
- Win rate = 40%
Result:
- 40 winning trades x €200 = €8,000
- 60 losing trades x €100 = €6,000
- Profit: €2,000
With just a 40% win rate. That’s the power of R:R.
Conclusion
The risk-reward ratio is the math that determines if you are profitable in the long run. Without a good R:R, you are doomed to lose, no matter how good your analysis is.
Aim for at least 1:2. Define your stop beforehand. Let profits run. The math does the rest.
