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RISK MANAGEMENT · PRACTICAL GUIDE

How to calculate risk
before entering a trade

A trade should begin with the amount you can afford to lose—not the profit you hope to make. Use a simple risk process to define your stop, position size and reward potential before you enter.

ForeignChart Education · Updated September 17, 2026 · Educational content

Risk management is the part of trading you can control before the market moves. You cannot know whether the next trade will win, but you can decide how much of your account is exposed if the idea is wrong.

Core principle: decide the acceptable loss first. Then calculate a position size that fits that loss and your stop distance.

1. Define your risk per trade

Start with your account balance and choose a maximum amount of capital you are willing to risk on one idea. Some traders express this as a percentage of account equity; others use a fixed cash amount. The important part is that the limit is defined before entry and is small enough that a losing streak does not force emotional decisions.

Cash risk = Account balance × Risk percentage
Example

If an account balance is $10,000 and the chosen risk is 1%, the maximum planned loss is $100. This is an illustration, not a recommended risk level.

2. Place the stop where the trade idea is invalid

A stop-loss should reflect the market logic of the setup rather than an arbitrary cash target. Identify the price level that would invalidate your analysis, then measure the distance between the planned entry and that stop.

A wider stop generally requires a smaller position to keep cash risk unchanged. A tighter stop generally allows a larger position, but only if that tighter stop still makes sense for the setup.

3. Calculate position size from the risk

Once cash risk and stop distance are known, position size can be calculated. The exact calculation depends on the instrument because pip value, tick value and contract specifications differ across forex, metals, indices and crypto.

Position size = Maximum cash risk ÷ Loss per unit at the stop

Do not assume the same lot size carries the same monetary risk across different instruments. Check the contract specification offered by your broker and use a position-size calculator when needed.

4. Check risk-to-reward before entry

Next, compare the distance to your planned stop with the distance to a realistic target. Risk-to-reward is not a guarantee of profitability; it simply describes how much is being risked relative to the planned reward.

Risk-to-reward = Potential reward ÷ Planned risk
Example

If the planned loss is $100 and the planned gain at the target is $200, the planned reward is twice the risk. Whether that setup is attractive still depends on the strategy, market conditions, costs and the strategy's actual win rate.

5. Include trading costs and execution risk

Real results can differ from a clean calculation. Spread, commission, financing, slippage and gaps can change the final loss or profit. During volatile conditions, an order may also execute away from the intended price. Treat calculated risk as a plan, not a promise of the exact final outcome.

A simple pre-trade risk checklist

  1. What is the account balance or equity used for the calculation?
  2. What is the maximum cash amount at risk on this trade?
  3. Where is the setup objectively invalid?
  4. How far is the stop from the planned entry?
  5. What position size keeps the loss within the risk limit?
  6. Is the target realistic relative to the risk?
  7. Have spread, commission and possible slippage been considered?
Process before prediction. A disciplined risk calculation cannot make a trade profitable, but it can prevent one ordinary losing trade from becoming an unnecessarily large loss.

Put the numbers into practice

ForeignChart's trading tools can help turn the process into numbers. Use the Position Size, Risk/Reward, Drawdown and Trading Plan tools before placing a trade.

Open ForeignChart Tools →

This material is for educational and informational purposes only and does not constitute investment advice or a recommendation to trade. Trading leveraged products involves risk, and losses can exceed expectations during adverse market conditions.