How Much Should You Risk Per Trade? The 1% Rule Explained

The 1% rule is simple: never risk more than 1% of your trading account on a single trade. If you have a $10,000 account, that means your maximum loss on any one trade — from entry to stop loss — should be $100. It isn't about being timid. It's about surviving long enough for your edge to play out.

Core distinction: Win rate determines whether you're profitable. Position sizing determines whether you're still in the game long enough to find out. Most blown accounts aren't caused by a bad strategy — they're caused by risking too much on a handful of trades.

🛡️ Conservative Sizing 0.5%–1%

Survives long losing streaks
Low emotional pressure per trade
Slower account growth
Recommended for most traders
Compounds sustainably over years
Used by most professional funds

⚠️ Aggressive Sizing 2%–5%+

A short losing streak can be fatal
High emotional pressure per trade
Faster growth if the edge holds
Only viable with a proven edge
Recovery from drawdown gets exponentially harder
Common cause of blown accounts

What the 1% Rule Actually Means

The 1% rule caps your risk per trade — not your position size, and not your potential profit. Risk is defined as the distance between your entry price and your stop loss, converted into money terms. Key points:

It's a ceiling, not a target — many professional traders risk 0.25%–0.5% per trade, especially on lower-conviction setups.
It scales with your account — as your balance grows or shrinks, your dollar risk per trade automatically adjusts.
It's independent of leverage — leverage changes your position size, not how much you're willing to lose. The stop loss defines the risk; leverage just determines how much capital you need to hold the position.
It applies per trade, not per day — many traders also cap total daily or weekly risk (e.g. 3% max exposure across all open positions).

Why Drawdown Math Is So Unforgiving

Losses and the gains needed to recover from them are not symmetrical. This is the mathematical reason position sizing matters more than almost anything else in trading. A 10% loss requires an 11% gain to recover — but a 50% loss requires a 100% gain just to break even.

Drawdown Recovery Table

Account Loss	Gain Needed to Recover
10%	11.1%
20%	25%
30%	42.9%
40%	66.7%
50%	100%
70%	233%
90%	900%

This is exactly why risking 1% (rather than 5% or 10%) per trade matters — it takes a very long losing streak to inflict a drawdown you can't realistically recover from.

Position Size Calculator

interactive

Enter your account balance, risk percentage, and stop loss distance to calculate your exact position size — and see how a losing streak would affect your account.

Equity (1% risk) Equity (your risk %)

Trade Inputs

Account balance ($) Risk per trade

0.25%1%5%

Stop loss (pips) Pip value / lot ($)

Amount at risk:

$100.00

Position size: 0.40 lots

Consecutive losses to lose 20%: ~22 trades

The Position Sizing Formula

Position sizing isn't guesswork — it's a fixed calculation once you know three inputs: your account balance, your risk percentage, and your stop loss distance.

Step 1 — Risk amount: Account balance × risk % = dollar amount you're willing to lose.
Step 2 — Stop distance: Entry price minus stop loss price, converted to pips (forex) or points/ticks (other markets).
Step 3 — Position size: Risk amount ÷ (stop distance × value per pip/point/tick) = number of lots or units to trade.

This means your stop loss placement comes first, based on chart structure — not the other way around. Never widen a stop just to fit a bigger position size; instead, shrink the position size to match the stop the setup actually requires.

Common Position Sizing Mistakes

Sizing by "gut feel" instead of the formula — leads to wildly inconsistent risk from trade to trade.
Widening the stop to justify a bigger position — this quietly turns a 1% risk trade into a 3–4% risk trade.
Ignoring correlated positions — three "1% risk" trades on correlated pairs can behave like one 3% risk trade.
Increasing risk after losses ("revenge sizing") to try to win it back faster — this is how accounts blow up.
Not accounting for slippage or gaps — especially around high-impact news events, where the actual fill can be worse than the stop price.

Beyond Per-Trade Risk: Portfolio-Level Limits

The 1% rule covers a single trade, but most experienced traders also cap total exposure across all open positions at once:

Max daily risk — e.g. stop trading for the day once cumulative risk or realized loss hits 2–3%.
Max correlated risk — treat highly correlated pairs (e.g. EUR/USD and GBP/USD) as a combined position when sizing.
Max concurrent trades — limiting the number of open positions prevents risk from silently stacking up.

Test Your Understanding

Frequently Asked Questions

Is the 1% rule too conservative for a small account?

Not really — on a $1,000 account, 1% is just $10 per trade. The percentage stays the same regardless of account size; what changes is how many lots or units you can trade at that risk.

Should I ever risk more than 1%?

Some experienced traders with a well-tested edge risk up to 2%. Beyond that, the math of drawdown recovery becomes increasingly punishing, so it's rarely recommended.

Does the 1% rule include spread and commission?

It's good practice to include spread, commission, and expected slippage in your stop distance calculation so your real risk doesn't exceed your intended 1%.

How does leverage relate to the 1% rule?

Leverage determines how much margin you need to hold a position, not how much you risk. Your risk is always defined by your stop loss distance and position size, regardless of leverage used.

Final Insight: No strategy survives an account that's been blown up by oversized positions. The 1% rule isn't about limiting your upside — it's about making sure a losing streak, which will happen to every trader eventually, never ends your ability to keep trading.