How Much to Risk Per Trade

We have established that you risk a constant 1R per trade. The natural question is: how big should 1R actually be, as a fraction of your account? This single choice does more to determine your survival and your nerves than almost anything else. This lesson gives you a defensible answer and the reasoning behind it.

The conventional range

Most professional and experienced retail traders risk somewhere between 0.5% and 2% of their account per trade, with 1% being a common default. On a $25,000 account, 1% is $250 of risk per trade. That figure is not arbitrary, it is chosen so that a realistic losing streak produces an uncomfortable but survivable drawdown rather than a catastrophe.

Consider what different risk levels do to a string of, say, eight consecutive losses (which any honest strategy will eventually deliver). At 1% per trade, eight losses cost roughly 8%, a normal drawdown you recover from easily. At 5% per trade, the same eight losses cost around 34%, dropping you deep into the steep part of the recovery curve. At 10%, you have lost more than half the account. Same losing streak; wildly different consequences. The per-trade fraction is the dial that controls all of it.

What should move the dial

Within the sane range, several factors justify risking toward the lower or higher end:

• Experience and proven edge. If you have hundreds of logged trades demonstrating a real, stable edge, you can justify the upper end. If you are new or testing a strategy, stay at the very bottom. 0.25% to 0.5%, because you are paying tuition and your “edge” is unproven.
• Strategy win rate and volatility. Lower win-rate strategies with long losing streaks demand smaller per-trade risk to survive the streaks. Smoother strategies can tolerate slightly more.
• Account significance. If this is money you cannot afford to lose, risk less. Financial pressure degrades decision-making, and a smaller risk fraction keeps you calm.

Why bigger is so tempting and so wrong

Risking 1% feels slow. New traders look at a $250 risk on a $25,000 account and think the gains are trivial, so they size up to feel meaningful action. This is the survival bias from Module 1 in disguise, optimising the feeling of a single trade instead of the multi-year equity curve. The traders who blow up almost never do so because their per-trade risk was too small. They blow up because it was too big and a normal bad run did what normal bad runs do.

Fixed fraction, not fixed dollars

Risk a fixed percentage, not a fixed dollar amount. As your account grows, 1% grows with it, so your position sizes scale up automatically and compounding accelerates. As your account shrinks during a drawdown, 1% shrinks too, so you automatically risk less when you are losing, a built-in defensive brake exactly when you need it. Fixed-dollar risk lacks both of these properties and is strictly worse.