Definition and what it measures
Risk Reward Ratio (often written as R:R) is a way to express how much potential profit you aim to make compared with how much potential loss you are willing to accept in a trade plan. In simple terms, it asks: if the trade moves to your target, how large is the reward relative to the risk defined by your stop level?
A higher R:R means the planned reward is larger compared to the planned risk. A lower R:R means the planned reward is smaller relative to the planned risk. The key point is that R:R is a planning metric based on predefined price levels, not a forecast of what the market will do.
How it works in forex
In forex, you typically think in terms of price levels on a chart. To define Risk Reward Ratio, you need two distances (or two price points translated into distances):
- Risk: the distance from your entry price to your stop level (the point where you would exit to limit loss).
- Reward: the distance from your entry price to your target level (the point where you would exit to take profit).
A common expression is:
Risk Reward Ratio = Reward ÷ Risk
Example with stated assumptions
Assume you plan an entry at a certain price, and you define:
- stop distance (risk) = 20 pips
- target distance (reward) = 50 pips
Then:
- Risk Reward Ratio = 50 ÷ 20 = 2.5
This value means your plan aims for the reward to be about 2.5 times the risk in distance terms. The calculation assumes those price distances are accurate relative to how execution will occur.
Mechanically separating ratio from performance
R:R helps structure a plan, but it does not automatically determine results. Even if two trades share the same R:R, realized outcomes can differ because the actual path of price, execution timing, and trading costs affect what you ultimately get.
Adjacent concepts and common confusion
Risk Reward Ratio is often discussed alongside related ideas, but they are not the same:
- Position sizing: how many units you trade. R:R alone does not specify your dollar (or account-currency) exposure; position sizing controls that.
- Expected value: a statistical concept that combines win probability with payoff sizes. R:R provides payoff size information, but expected value also needs an estimate of the probability of reaching the target vs. the stop.
- Stop-loss and take-profit: are the actual levels used to define risk and reward in the plan. R:R is the comparison of the distances implied by those levels.
A frequent failure mode is treating R:R like an indicator that “signals” a future outcome. A ratio describes a relationship between predefined levels; it does not indicate whether the stop or the target will be hit next.
Limitations, risks, and what you can verify
1) Execution and costs can break the clean math
The ratio is calculated from assumed distances. In real trading, costs and execution effects can change realized results:
- Spreads and commissions reduce net profitability.
- Slippage can worsen losses or change the effective reward.
- Volatility changes can move price rapidly, affecting whether your plan can be executed at the intended levels.
Because of this, you should treat R:R as an approximation of the trade plan rather than a guarantee of outcome.
2) The “planned” risk may not equal the “realized” risk
Even if your stop is defined, the executed exit price may differ from the stop level under fast moves or liquidity changes. That means the realized loss may be larger than the distance you used to compute R:R.
3) Historical performance doesn’t ensure future results
If a strategy has historically produced certain outcomes with a given R:R, that pattern does not establish that future market conditions will behave the same way. Changing volatility regimes, market structure, and execution quality can all affect results.
What to independently verify
You can verify R:R computation by checking that:
- the risk distance and reward distance are measured consistently from the same reference (entry to stop, entry to target),
- the ratio matches your stated levels,
- your plan includes realistic assumptions for costs and execution.