Every professional trader has a maximum risk per trade rule.
It varies slightly between traders — but the most common and most recommended for retail traders is:
Never risk more than 1-2% of your total account on any single trade.
This single rule — applied consistently — is the difference between surviving and blowing up.
1% risk does NOT mean investing 1% of your account.
It means the maximum you can LOSE on the trade is 1% of your account.
Example:
Account size: $10,000
1% risk = $100 maximum loss per trade.
If your stop loss is hit — you lose $100. Not $10,000. Not $5,000. $100.
This $100 is your defined risk. Your position size is calculated to ensure this.
10 consecutive losing trades at 2% risk:
Starting account: $10,000
After 10 losses:
$10,000 × (0.98)^10 = $8,171
You still have 82% of your account after 10 straight losses.
10 consecutive losing trades at 10% risk:
$10,000 × (0.90)^10 = $3,487
You have lost 65% of your account after the same 10 losses.
10 consecutive losing trades at 25% risk:
$10,000 × (0.75)^10 = $563
You have lost 94% of your account. Game over.
The 1-2% rule is not about being conservative. It is about mathematical survival through inevitable losing streaks.
No strategy wins 100% of the time. Even the best strategies in the world have losing streaks.
A strategy with 60% win rate:
Statistically — a 10 loss streak will occur eventually.
At 2% risk — 10 losses = account down 18%. Recoverable.
At 10% risk — 10 losses = account down 65%. Devastating.
Losing streaks are not a sign that your strategy is broken. They are mathematical certainties that happen to every trader eventually.
The 1-2% rule ensures you survive the inevitable losing streaks to reach the profitable stretches.
Step 1: Decide your risk percentage. Start with 1% if new. Maximum 2%.
Step 2: Calculate your risk in dollars.
Account = $5,000. Risk = 1%. Dollar risk = $50.
Step 3: Determine your stop loss distance.
Entry price: $80,000. Stop loss: $78,000. Distance = $2,000.
Step 4: Calculate position size.
Position size = Dollar risk ÷ Stop loss distance
= $50 ÷ $2,000 = 0.025 Bitcoin
Step 5: Verify.
0.025 BTC × $2,000 stop distance = $50 loss if stopped out. ✅
High confidence setup:
Perfect confluence — support, RSI divergence, engulfing pattern, volume confirmation.
Still maximum 2%. Never exceed your rule regardless of confidence.
Lower confidence setup:
Reduce to 0.5% or 1%.
Confidence does not justify breaking risk rules.
After losing streak:
Reduce risk temporarily. Trade at 0.5% until confidence rebuilds.
Never increase risk to recover losses — this leads to account destruction.
After winning streak:
Keep risk at same percentage. Do not increase because of recent wins.
Overconfidence after wins destroys more accounts than losing streaks.
Mistake 1 — Confusing investment size with risk
“I only put 2% of my account into this trade” is meaningless without a stop loss.
Without a stop — your entire 2% investment can go to zero.
Risk is defined by your stop loss — not your position size.
Mistake 2 — Moving stop losses
You calculate 1% risk with stop at $78,000.
Trade goes against you. You move stop to $75,000 to give it more room.
Now you are risking 2-3% — breaking your rule.
Never move stop losses further away from entry.
Mistake 3 — Not accounting for fees
Trading fees reduce your actual return.
Factor fees into your risk calculation.
Mistake 4 — Inconsistency
Following the rule on most trades but risking 10% on a few special setups.
The account blowup always comes from those exceptions.
As your account grows — your dollar risk grows automatically with the percentage.
$10,000 account at 1%: Risk $100 per trade.
$20,000 account at 1%: Risk $200 per trade.
$50,000 account at 1%: Risk $500 per trade.
The percentage stays constant. The dollar amount grows with your success.
This is the correct way to scale — not by increasing the percentage.
In the next topic we will learn how to calculate exact position sizes for any trade setup.