The amount you risk per trade is arguably the single most important decision you make as a trader — more important than your entry, your target, or even which asset you're trading. Get this wrong, and even a strategy with a 60% win rate can blow up your account. Get it right, and you can survive long losing streaks while still compounding your capital over time.

The 1-2% Rule

The most widely accepted guideline among professional traders is simple: never risk more than 1-2% of your total trading capital on a single trade.

Here's what that looks like in practice:

• $10,000 account — maximum risk per trade is $100 to $200.
• $1,000 account — maximum risk per trade is $10 to $20.

"Risk" here doesn't mean your total position size. It means the amount you'll lose if your stop loss gets hit. Your position size is derived from this risk amount and the distance to your stop loss.

How to Calculate Position Size

The formula is straightforward:

Position Size = Risk Amount / Stop Loss Distance

Example: You have a $5,000 account and want to risk 2% ($100) on a BTC long. Your entry is $60,000 and your stop loss is at $58,500 — a 2.5% move.

• Risk amount: $100
• Stop loss distance: 2.5%
• Position size: $100 / 0.025 = $4,000

So you'd open a $4,000 BTC long. If price hits your stop, you lose $100 — exactly 2% of your account. Your leverage in this case would be less than 1x, meaning you don't even need leverage for this trade.

This is the power of proper position sizing: it decouples your risk from your leverage and position size.

Why Small Risk Per Trade Matters

The math of recovery is brutally asymmetric:

• Lose 10% of your account — you need an 11% gain to recover.
• Lose 25% — you need a 33% gain.
• Lose 50% — you need a 100% gain just to break even.

By keeping risk small per trade, you ensure that even a string of five or ten consecutive losses (which is statistically inevitable over a long enough period) only draws your account down 5-20%, not 50-100%.

A trader risking 1% per trade who loses ten in a row still has roughly 90% of their capital. A trader risking 10% per trade who loses ten in a row has virtually nothing left.

Adjusting Risk Based on Confidence

While 1-2% is the standard, some traders use a tiered approach:

• A-grade setups (highest confidence): Risk 2% of capital.
• B-grade setups (moderate confidence): Risk 1% of capital.
• C-grade setups (speculative): Risk 0.5% or skip entirely.

This framework forces you to evaluate each trade honestly before entering. If you can't articulate why a setup deserves full risk, it probably doesn't.

Bankroll Management for Longevity

Think of your trading capital as a bankroll, similar to how professional poker players think about their stack. The goal isn't to maximize any single hand — it's to stay in the game long enough for your edge to play out over hundreds of trades.

Practical bankroll rules:

• Set a daily loss limit. If you lose 3-5% in a single day, stop trading. Emotional decisions after losses are the fastest way to compound damage.
• Scale down after drawdowns. If your account drops 15-20% from its peak, reduce your risk per trade from 2% to 1% until you recover.
• Scale up gradually. As your account grows, your absolute risk per trade grows with it (since it's percentage-based), but resist the urge to jump to 3-5% just because you're on a winning streak.

The Bottom Line

Risk management isn't exciting. It doesn't produce dramatic gains on a single trade. But it's the difference between traders who last five years and traders who last five weeks. Master the discipline of risking 1-2% per trade, and you give yourself something most traders never have: time for your strategy to work.