Win rate doesn't decide who survives — risk does. The 1% rule, position sizing math, stop placement and risk of ruin, explained plainly and linked to the calculators that do the numbers for you.
Ready to put this into practice?Trade on Bybit — deep liquidity, low fees, up to a $30,000 welcome bonus.Open Bybit account →You can be right 60% of the time and still go broke if your losers are bigger than your winners, or if one oversized trade blows up the account. Professional traders obsess over risk per trade and risk of ruin — not entries. The single most important number is: how much do I lose if this trade is wrong?
Risk no more than 1–2% of your account on any single trade. With 1% risk, it takes a brutal 100 consecutive losses to be wiped out — statistically almost impossible with any real edge. Risk 10% per trade and just 10 losses in a row (very possible) halves your account. This is the difference between surviving a losing streak and ending your trading career.
Risk of ruin →Position size →Position size is not "how much can I afford" — it's derived from your stop:
Position size = (Account × Risk%) ÷ (Entry − Stop distance)
Example: $10,000 account, 1% risk ($100), stop 2% away → position = $100 ÷ 0.02 = $5,000 notional. Your leverage then just follows from that — it's an output, not a knob you crank for excitement.
Position size calc →Max safe leverage →A stop belongs where your idea is proven wrong — below structure, not at an arbitrary dollar amount. Place it too tight and normal volatility stops you out; too wide and you risk too much. The ATR (average true range) tells you how much the asset normally moves, so you can set a stop outside the noise.
ATR stop-loss →SL/TP calc →Risk:reward and win rate are two sides of one coin. At 1:1 you need to win >50% to profit. At 1:3 (risk $1 to make $3) you only need ~25%. This is why trend traders survive on low win rates — their winners dwarf their losers. Know your required win rate before you trade a setup.
Risk:reward →Break-even win rate →On leverage, if price hits your liquidation price the exchange force-closes you at a loss — no second chances. Always know where it is, and keep your real stop-loss well in front of it so you exit on your terms, not the exchange's. Higher leverage pulls liquidation dangerously close to entry.
Liquidation price →Liquidation buffer →The 1% rule means risking no more than 1% of your total account on any single trade. With a real edge, it makes a full account wipeout statistically almost impossible, because it would take around 100 losses in a row to blow up. It's the simplest defence against a normal losing streak ending your account.
Position size = (Account balance × Risk %) ÷ stop-loss distance. For example, a $10,000 account risking 1% ($100) with a 2% stop gives a $5,000 notional position. Size is derived from your stop and risk tolerance, not from the maximum margin the exchange lets you use.
Place your stop where your trade idea is proven wrong — typically just beyond a structural level like a recent swing low or support — and outside normal volatility (use ATR to gauge that). Avoid arbitrary round-number or fixed-dollar stops that ignore the chart.
Risk of ruin is the probability that a losing streak wipes out your account given your risk per trade, win rate, and risk:reward. Lower risk per trade and higher expectancy both push it toward zero. It's why sizing matters more than any single entry.
⚠️ Educational only — not financial advice. Leverage trading can lose your entire deposit.