The 1% Risk Rule & Survival Probability Calculation

In the world of professional financial trading, the biggest difference between a gambler and a professional trader lies in **risk management ability**. Successful prop traders always consider capital protection as the number one priority, followed by making profits. Their core rules are: Never risk more than 1% of your account balance on each trade.

1. Why 1%? Mathematical Problems About Account Decline (Drawdown)

Many new traders often think that 1% risk is too small and want to risk 5%, 10% to get rich quickly. However, they forget the cruel mathematical rule of the market regarding the **necessary recovery level after a loss**:

If you risk 10% per trade, if you lose 5 consecutive orders, your account will decrease by 50%. To get back to the original breakeven point, you have to double your account (+100%) — a task that is extremely impossible for most people and often leads to completely burning your account due to the psychology of losing money.
On the contrary, if you only risk 1% per trade, a losing streak of 5 consecutive orders will only cause you to lose about 5% of your account. You can completely recover with just 1-2 winning orders with a good R:R ratio.

2. Capital Management According to Fund Account Law (Prop Firm Rules)

If you want to test and manage funds (like FTMO, MFF, etc.), even 1% risk is still big. Funds usually limit the maximum daily loss (Daily Drawdown) to 5% and the total loss (Max Drawdown) to 10%.