3-5x. Treating 100x as "tougher leverage" is wrong — it is a switch that zeroes you on a 1% BTC move.
Attached, always. You sleep, work, take meetings — the market does not wait. The 2024-08-05 flash crash hit during Asian midday; the "I will close it by hand" crowd woke up already liquidated.
Isolated. Your worst case on isolated is the margin you put on that position. Worst case on cross is your full account balance. Beginners should not touch cross.
Yes. A +0.05% per 8h long over three days = -0.45% on margin (ignoring price). Check funding before opening — see if your direction is the side that pays this cycle.
No. BTC weekend volume is thin, depth is poor, Sunday-night gaps of -3% to -8% have happened 12+ times. Full-size weekend = volunteering for a Sunday-morning surprise.
1. Mistake one: going cross-margin all-in
The setup: you saw a clean breakout. You felt confident. You moved to OKX, switched to cross margin (because "more capital backing the trade"), and put 80-100% of your account into one position at 10x leverage.
The break: cross margin uses every USDT in your account as collateral for that one position. A 5% adverse move at 10x wipes 50% of your account. A 10% adverse move at 10x wipes 100%.
The fix: isolated margin for the first three months of live trading. Wall off each position. Even if you misread direction, the worst case is the wall, not the whole account.
For the textbook framing of liquidation mechanics, Investopedia's liquidation entry walks through the engine logic in its general form.
2. Mistake two: no stop, "I'll close it manually"
The setup: you opened a 10x long without setting an SL on the ticket. Your plan was to watch the trade and close if it moved against you.
The break: a 10x position liquidates around an 8.5% adverse move. BTC routinely moves that much in 6-12 hours. If the move happens overnight, you wake up to zero.
The fix: every order has SL/TP attached at submission, not as an afterthought. Set the SL at a sensible 1-2R distance (matching the position-size paradox piece). If the chart moves against you, the order goes off automatically while you sleep.
The argument against stops — "I'll close it manually so I don't get stopped on noise" — only works if you are watching the chart 24/7. Almost nobody can do that. The stop is your insurance policy against your own absence.
3. Mistake three: the wrong leverage — 50x is not aggressive, it is suicidal
The math (covered in detail in the leverage / liq price piece). 5x leaves you ~19% of room before liquidation. 10x leaves 9%. 50x leaves 1.4%. 100x leaves 0.4%.
"1.4% of room" sounds like a number. In BTC perp terms it means the random walk inside any single hour can liquidate you. 100x means even the opening taker fee alone is meaningful relative to your liquidation buffer.
The fix: 3x-5x for your first 30 days of live trading. 10x is the ceiling once you have a tracked win rate and tight stop discipline. Above 20x is not aggressive — it is statistically negative expected value once you account for fees and funding.
This one our editorial team genuinely lived through. In 2025-11 a new colleague tried OKX perp for the first time, principal 300 USDT, saw a KOL screenshot of "100x BTC long all-in" and followed it — opened a 0.03 BTC long at $98,420, 100x leverage, notional $2,953, almost the full 300 USDT used as margin. Entry timestamp 2025-11-14 22:18 UTC+8.
Position lived 11 minutes — at 22:29 BTC printed $97,580 (only -0.85%), triggering the 100x liquidation. The 300 USDT went straight to zero (after fees, 2.4 USDT remained). 297.6 USDT, eleven minutes, no negotiation. His own corrections-page line afterwards: "100x is not 'meaner leverage', it's 'I authorised OKX to torch my account if BTC moves 1%'."
This is the live exhibit behind our repeated "leverage ≤ 5x" line. 100x liq distance is only 0.6 - 0.8%, well within normal 5-minute BTC ranges. The only sensible use of 100x is "short-hold + tight stop + tiny size", never a beginner's all-in. If you are just starting perp and have under 500 USDT, lock the max at 5x and do not touch anything above 10x. That single rule keeps the account alive through the first 90 days.
4. Mistake four: not budgeting funding across settlements
The setup: you opened a long at 19:00 UTC. You ignore the funding countdown. At 00:00 UTC the settlement fires. Your position is charged the locked-in funding rate × notional.
The break: if funding is +0.05%/8h, your 10,000 USDT notional position pays 5 USDT every 8 hours. Over 30 days at that rate, 30 × 3 × 5 = 450 USDT. On a 1,000 USDT margin position, that is 45% of margin in pure funding.
The fix: before holding a position across any settlement, check the funding rate. If it is high (>0.02%/8h against you), recalculate whether the trade still pencils. The full math is in the funding rate piece.
5. Mistake five: holding leveraged into the weekend
The setup: you carry a 10x position into Friday US close, planning to hold it through to Monday because you have a directional view.
The break: weekend liquidity on crypto perps is thin. Asia open Saturday and Sunday mornings is the thinnest window. Flash moves of 3-5% in 5 minutes happen multiple times a year, often on no news at all. On 10x leverage, a 5-minute 5% wick can hit your stop or your liq price even if the close back is fine.
For event data, CoinGlass's liquidation data shows how often weekend liquidation spikes happen relative to weekday spikes — empirically several times higher per unit of volume traded.
The fix: enter the weekend with no leverage above 3x, or flat. If you have a strong view that requires weekend exposure, take it on spot, not on a leveraged perp.
Practice the fix on a small ticket.
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6. The four-number checklist before every order
Before you click Buy or Sell, type the answer to four questions into a notes app. If any answer is missing, do not place the trade.
Leverage. What multiplier am I using? (Answer should be 3-10x.)
Liq price. What is the actual liquidation price for this position? OKX prints it directly on the order ticket. Is the distance to liq sensible relative to current volatility?
Stop price. Where is my SL set? Is the distance to stop a reasonable percentage of margin (0.5-2%)?
Max loss in USDT. If the stop hits, how much USDT do I lose? Is that a number I can lose without anger?
Four numbers. Thirty seconds. The number of rookie blowups this prevents is almost embarrassing.
7. A 30-day training plan you can actually run
Week 1: read this article, the leverage piece, the funding piece. Do not trade live.
Week 2: open one BTC perp trade per day. 30-50 USDT margin, 3x leverage, hard SL at 1.5%, hard TP at 3%. Journal each trade with the four-number checklist.
Week 3: review the week-2 log. What is your realised win rate? What is your average R per trade? Adjust size based on what you see, not what you hoped.
Week 4: scale margin to 100-150 USDT per trade, same leverage, same stops. Continue journalling.
End of month 1: review 30 days of trades. If your realised PnL is positive after fees and funding, you have a real edge. If it is negative, you have a real exploration. Either way, the journal tells you what to do next month.
From here, the natural next pieces are the stop-loss paradox and Kelly position sizing.