Risk-Reward Ratio in Forex: How to Calculate and Use It

Before entering any trade, it helps to know two numbers: how much you could lose if you are wrong, and how much you could make if you are right. The relationship between them is the risk-reward ratio. It is one of the simplest and most useful tools in risk management.

What the risk-reward ratio measures

• Risk is the distance from your entry to your stop-loss.
• Reward is the distance from your entry to your take-profit.

The ratio is usually written as risk : reward. A 1:2 ratio means you aim to make two units for every one unit you risk. Some platforms show it the other way round (reward-to-risk of 2), so check which convention a tool uses.

Risk-reward = (entry − stop) : (target − entry) for a buy, measured in pips or money.

Worked example: calculating the ratio

Assume, for illustration, that you plan to buy EUR/USD:

• Entry: 1.0850
• Stop-loss: 1.0820
• Take-profit: 1.0940
• Risk: 1.0850 − 1.0820 = 0.0030 = 30 pips
• Reward: 1.0940 − 1.0850 = 0.0090 = 90 pips
• Ratio: 30 : 90 = 1:3

If you risk $100 on this trade, the planned outcomes are a $100 loss or a $300 gain, before spread and other costs. The Position Size Calculator tells you how many lots make 30 pips equal $100, and the Risk-Reward Calculator checks the ratio.

Linking the ratio to win rate

A ratio on its own says nothing about profitability. You also need to know how often you win. The minimum win rate needed to break even (before costs) is:

Break-even win rate = risk ÷ (risk + reward)

Trading costs such as spread and commission push the real break-even rate slightly higher.

Expectancy example

Assume a trader takes 20 trades, risks $100 on each, uses a 1:2 ratio and wins 40% of the time.

• Winners: 20 × 40% = 8 trades × $200 = $1,600
• Losers: 12 trades × $100 = $1,200
• Net result: $1,600 − $1,200 = $400 before costs
• Average per trade: $400 ÷ 20 = $20

Now the same trader uses a 1:1 ratio with the same 40% win rate:

• Winners: 8 × $100 = $800
• Losers: 12 × $100 = $1,200
• Net result: −$400

The win rate was identical, but the outcome flipped from a gain to a loss. This illustrates why the two numbers must be considered together. These figures are illustrative; real results vary and past results do not guarantee future ones.

The trade-off

It is tempting to demand very high ratios on every trade. The catch is that targets further away are, on average, reached less often, and stops placed very tight to inflate the ratio are hit more often by normal market noise. A sensible ratio comes from the chart, not from a fixed rule:

• Place the stop where the trade idea is clearly wrong, for example beyond support or resistance.
• Place the target before the next obvious obstacle.
• Then calculate the ratio. If it is poor, skip the trade rather than moving the stop or target to make it look better.

Planned vs actual ratio

The ratio you plan is not always the ratio you achieve. Slippage, early exits, moving stops and partial closes all change the outcome. Recording both in a journal shows whether your execution matches your plan. Repeated small deviations can turn a sound plan into a losing one and deepen your drawdown.

Common mistakes

• Moving the stop further away once a trade goes against you, which silently worsens the ratio.
• Taking profits early on winners while letting losers run to the full stop.
• Ignoring win rate and assuming a high ratio is automatically profitable.
• Forgetting costs. Spread matters more on short-term trades with small pip targets.
• Choosing the target first and then squeezing the stop to fit a desired ratio.

Summary

The risk-reward ratio compares the distance to your stop with the distance to your target. Combined with your win rate, it determines whether a method can be profitable: break-even win rate = risk ÷ (risk + reward). Higher ratios need fewer winners but usually win less often. Build ratios from chart structure, stick to the plan, and track planned versus actual results. Trading always carries the risk of loss. The final lesson in this section, Trading Psychology, explains why following a plan is harder than it sounds.