Risk-Reward Ratio
Risk-reward ratio compares planned downside with planned upside before a trade, but it must be checked against probability, costs, and execution risk.
The risk-reward ratio compares planned downside with planned upside before entering or managing a trade. It helps a trader ask whether the potential reward is large enough relative to the loss the trade plan is willing to accept.
The ratio is a planning tool, not a prediction. A favorable-looking ratio does not make a trade good if the target is unrealistic, the stop is likely to be hit, or execution costs change the outcome.
Key Takeaways
- Risk-reward ratio compares planned loss with planned gain before the trade is placed.
- The ratio depends on the entry price, stop level, target price, and expected execution quality.
- A high planned reward does not help if the target is unrealistic or the probability of reaching it is low.
- The ratio should be reviewed with Win Rate, Position Sizing, and transaction costs.
- This is an educational planning measure, not personalized trading advice.
Basic Formula
1risk-reward ratio = planned loss / planned gain
If a trader risks $2 per share to target a $6 per-share gain, the ratio is 2 / 6, or 1:3 in common trading language. That means the planned reward is three times the planned risk before costs and taxes.
Some traders describe the same setup as a reward-to-risk ratio of 3:1. The math is the same, but the wording is reversed. The page uses risk-reward wording because it starts with the downside that must be controlled.
Worked Example
A trader plans to buy at $50, use a stop at $47, and target $59.
| Item | Amount |
|---|---|
| Entry price | $50 |
| Stop level | $47 |
| Planned risk per share | $3 |
| Target price | $59 |
| Planned gain per share | $9 |
| Common ratio | 1:3 |
This trade still needs a realistic probability assessment. A 1:3 setup can perform poorly if it rarely reaches the target or if slippage regularly turns the planned $3 risk into a larger realized loss.
Before using the ratio for Position Sizing, the trader should also decide whether the stop level is executable, whether the target is realistic for the asset’s normal range, and whether costs would materially reduce the planned payoff.
How To Evaluate The Ratio
The strongest risk-reward review treats the ratio as a filter, not as proof. A trade with a clean-looking ratio can still be weak if the target is arbitrary, the stop is too tight for normal volatility, or the trade is too large for available liquidity.
| Check | Why it matters | Weak signal |
|---|---|---|
| Entry quality | A late entry can shrink reward and increase risk | The trade is entered after most of the move already happened |
| Stop logic | The stop should reflect the trade thesis, not just a convenient number | The stop is placed where normal volatility is likely to trigger it |
| Target logic | The target should be tied to market structure, valuation, volatility, or a written exit rule | The target is drawn only to make the ratio look attractive |
| Probability | A large reward may not matter if the setup rarely reaches the target | The trade needs an unusually favorable move to work |
| Costs and slippage | Transaction Cost reduces realized reward and can enlarge realized loss | The ratio is calculated before spreads, commissions, financing, and taxes |
| Order behavior | Stop-Loss Order and Take-Profit Order instructions can fill differently from planned prices | The plan assumes exact fills in fast or illiquid markets |
What The Ratio Misses
- probability of reaching the target
- gap risk and slippage
- bid-ask spreads and commissions
- liquidity and market impact
- tax and financing costs
- whether the stop or target is technically or fundamentally justified
- whether the setup has been tested across enough trades and market conditions
Risk-Reward vs. Win Rate
| Concept | What it asks | Limitation |
|---|---|---|
| Risk-reward ratio | How large is planned upside compared with planned downside? | Does not show probability |
| Win rate | How often does the strategy win? | Does not show size of wins or losses |
| Expected value | What is the probability-weighted outcome? | Depends on assumptions and historical stability |
| Risk-adjusted return | How much return was earned for risk taken? | Usually requires performance data |
Common Break-Even Framing
Risk-reward ratio and win rate interact. A strategy with larger average wins can tolerate a lower win rate, while a strategy with small average wins needs to win more often. This relationship is still only an estimate because real trades include costs, changing size, gaps, and behavioral errors.
| Planned ratio | Plain-English meaning | Approximate win rate needed before costs |
|---|---|---|
| 1:1 | Planned gain equals planned loss | More than 50% |
| 1:2 | Planned gain is twice planned loss | More than 33% |
| 1:3 | Planned gain is three times planned loss | More than 25% |
These thresholds are simplified break-even references, not performance targets. After costs, taxes, slippage, and failed execution, the required win rate is higher.
Common Mistakes
- Drawing an attractive target after deciding to take the trade.
- Ignoring that a stop order may execute below the stop level.
- Using the same ratio for every security regardless of volatility.
- Treating 1:3 as automatically better than 1:1 without considering win rate.
- Calculating the ratio before including transaction costs.
- Increasing position size because the planned ratio looks attractive while ignoring account risk.
- Moving the stop or target after entry without recording the rule change.
Public Source Checks
These public sources provide general risk and order-type context. They do not determine whether any specific trade, stop level, target, or position size is suitable.
Related Terms
- Win Rate: Percentage of trades that close with gains.
- Win/Loss Ratio: Comparison of average winning trade and average losing trade.
- Position Sizing: Converts planned risk into trade size.
- Stop-Loss Order: Order type often used to define downside.
- Take-Profit Order: Order type often used to define upside.
- Risk-Adjusted Return: Broader performance concept after risk is considered.