Forex Risk Management
Level 4: Risk & Psychology
You can have the best strategy in the world and still blow up your account. Risk management is the set of rules that decides how much you can lose — per trade, per day and overall — so you survive long enough for your edge to work.
This level covers risk, position sizing, stops, expectancy, psychology and journaling.
Professional traders think about what they can lose before they think about what they can win. This lesson gives you the core rules and the maths behind them.
Why Most Traders Fail
Regulated brokers in the UK, EU and Australia must publish the share of retail CFD accounts that lose money. The figure is usually between 60% and 80%. Bad strategies are part of the story, but the biggest causes are about risk:
- Risking too much per trade — a few losses wipe out weeks of gains.
- Over-leveraging — using the full leverage your broker allows.
- No stop loss — hoping a losing trade will come back.
- Revenge trading — trading bigger to win back a loss.
- Hidden doubling — several trades on correlated pairs.
Note: Leverage limits exist to protect retail traders. In the UK (FCA), EU (ESMA/CySEC) and Australia (ASIC) the cap on major pairs is 1:30; in the US (CFTC/NFA) it is 1:50. Using all of it is almost never wise. See Leverage & Margin.
The 1–2% Rule
The most common rule in trading: never risk more than 1–2% of your account on a single trade. "Risk" means the amount you lose if your stop loss is hit — not the size of the position.
Example
Account: $10,000 Risk 1%: $10,000 × 0.01 = $100 per trade Risk 2%: $10,000 × 0.02 = $200 per trade
If your stop is hit, you lose $100 (or $200). Your next trade is sized from the new balance.
Why so small? Because losing streaks are normal. Look at what a streak of losses does at different risk levels:
| Risk per trade | After 10 losses in a row | After 20 losses in a row |
|---|---|---|
| 1% | −9.6% | −18.2% |
| 2% | −18.3% | −33.2% |
| 5% | −40.1% | −64.2% |
| 10% | −65.1% | −87.8% |
Info: These figures assume each loss is a % of the current balance, so losses shrink as the account shrinks: balance × (1 − risk)losses. With a 50% win rate, a streak of around 10 losses somewhere in 1,000 trades is quite likely.
Daily and Weekly Loss Limits
A per-trade limit is not enough. On a bad day you could take five losses in a row. A maximum daily loss and maximum weekly loss force you to stop before emotions take over.
| Limit | Common choice | What you do when hit |
|---|---|---|
| Per trade | 1% | Stop loss closes the trade |
| Per day | 3% | Stop trading until tomorrow |
| Per week | 6% | Stop until next week; review your journal |
| Max drawdown from peak | 15–20% | Pause live trading; go back to demo and review |
Tip: Prop firms use the same idea. Many set a 5% daily loss limit and a 10% maximum loss. Training yourself with limits now makes those rules easy later. See Prop Firms.
Drawdown Recovery Maths
A drawdown is the fall from your account's highest point (peak) to its lowest point afterwards. The painful truth: gains needed to recover grow faster than losses.
| Drawdown | Gain needed to get back to the peak |
|---|---|
| 5% | 5.3% |
| 10% | 11.1% |
| 20% | 25.0% |
| 25% | 33.3% |
| 30% | 42.9% |
| 40% | 66.7% |
| 50% | 100% |
| 75% | 300% |
| 90% | 900% |
Example
Start: $10,000 Lose 50%: $10,000 → $5,000 To recover: $5,000 → $10,000 = +$5,000 Gain needed: $5,000 ÷ $5,000 = 100%
Losing half your money takes one bad month. Doubling it back can take years.
Try it yourself. Enter your balance, risk per trade and a losing streak:
Risk of Ruin
Risk of ruin is the probability that you lose so much that you cannot continue trading. It depends on three things: your win rate, your reward-to-risk ratio and how much you risk per trade.
The striking part is that even a strategy with a real edge can go broke if risk per trade is too high.
| Risk per trade (fixed $) | Approx. risk of losing the whole account |
|---|---|
| 1% | ≈ 0% |
| 2% | ≈ 0.004% |
| 5% | ≈ 1.8% |
| 10% | ≈ 13% |
| 20% | ≈ 37% |
Note: Table uses a simple model: 55% win rate, wins and losses of equal size (1:1), and a fixed dollar amount risked each trade. Formula: ((1 − edge) ÷ (1 + edge))N, where edge = 0.55 − 0.45 = 0.10 and N = how many losing trades the account can absorb (1 ÷ risk). Real trading has costs and uneven results, so true risk is higher.
Danger: "Ruin" does not have to mean $0. For most people, a 50% drawdown is psychological ruin — they quit or start gambling to win it back. Keep risk low enough that you never get close.
Correlation Exposure
Three trades at 1% each are only three separate risks if the pairs are not correlated. Long EUR/USD, long GBP/USD and long AUD/USD are really one bet: "the US dollar will weaken".
Example
Account $10,000, risk 1% per trade. Open trades:
Long EUR/USD risk $100 (−USD) Long GBP/USD risk $100 (−USD) Long AUD/USD risk $100 (−USD) Total short-USD risk: $300 = 3%
A rule like "max 2% total risk per currency" would make you skip or shrink the third trade.
Your Risk Rules
Write these down and put them in your trading plan:
- Risk per trade: 1% (max 2%).
- Max daily loss: 3%. Max weekly loss: 6%.
- Max total open risk: 4–5%; max 2% on any one currency.
- Every trade has a stop loss set before entry.
- Never add to a losing position.
- After hitting a drawdown limit, stop and review your journal.
Test Yourself With Exercises
Your account is $8,000. How much do you risk on one trade at 1.5%?
- $80
- $150
- $120
- $1,200
After a 20% drawdown, what gain do you need to get back to the peak?
- 20%
- 25%
- 40%
Which is the best definition of "risk" on a trade?
- The position size in lots
- The margin used
- The profit target
- The amount lost if the stop loss is hit
You lose 50% of your account. What return do you need to break even?
- 100%
- 50%
- 75%
You are long EUR/USD, GBP/USD and NZD/USD, risking 1% each. What is the main problem?
- None, they are different pairs
- They are all one bet against the USD, so real risk is about 3%
- They cancel each other out