Sizing Bybit Futures Positions from Liquidation Distance

Most leverage mistakes on Bybit futures start with the wrong question. Traders ask how much they can open, pick a leverage number that looks manageable, and only later notice that the liquidation price sits uncomfortably close to the current market price. A more reliable order of operations is to reverse that: decide how far the market must move against you before your position is closed out, then work backwards to the leverage and position size that fit that distance. This guide walks through that calculation in plain steps, using the figures shown in your own Bybit account rather than any assumed numbers, and explains which settings you should verify before and after opening a position. It is written for readers in Italy who already have an account and want a repeatable routine rather than a one-off guess.

Start from liquidation distance, not from leverage

Liquidation distance is the gap between your entry price and the price at which the position would be closed out. It is the number that actually determines whether normal market noise can take you out of a trade. Leverage is only a tool that scales that gap up or down, so treating leverage as the starting point inverts the logic. On Bybit you can see the estimated liquidation price for an open position in the position details panel, and the same panel shows your margin mode, position mode and current margin. Before you open anything, decide in advance how much adverse movement your idea can tolerate without being invalidated, and treat that as your budget.

The practical consequence is that two traders using identical leverage can carry very different risk. A position opened with a wide stop and a large margin buffer behaves nothing like the same leverage with margin barely above the maintenance requirement. This is why copying a leverage figure from a screenshot or a social post tells you almost nothing about the risk behind it. What travels between accounts is the distance, expressed as a percentage move from entry, not the multiplier.

Write the number down before you click. If you cannot state your intended liquidation distance in percent, you are not yet ready to size the trade. The Bybit help centre explains how liquidation is calculated for the contract you are trading, including how maintenance margin and mark price enter the formula, and that explanation is the correct reference when your own panel shows something you did not expect.

Reading the inputs your account gives you

Four inputs drive the calculation: the contract's contract size and minimum order quantity, the mark price, your available margin in the relevant settlement coin, and the maintenance margin requirement for the position tier you fall into. Bybit publishes these per contract on the contract specification and risk limit pages, and the trading interface echoes them when you enter an order. Because tiers change as position value grows, a size that sits in one tier at one moment can sit in a higher tier later, which raises the maintenance requirement and pulls liquidation closer. Check the tier that matches the size you are about to open, not the size you opened last week.

Margin mode matters just as much. In isolated margin, only the margin assigned to that position backs it, so liquidation distance is a direct function of how much you allocate. In cross margin, the rest of your account balance supports the position, which pushes liquidation further away but also puts more of your balance at risk if the trade goes wrong. Neither mode is safer in the abstract; they simply produce different distances, and the position panel shows which one is active. Confirm it before sizing, because switching later changes the calculation.

Also confirm the position mode, one-way or hedge, and whether you are opening or adding to an existing position. An added position blends your entry price and shifts the liquidation level, so a distance you calculated for the first entry no longer describes the combined position. The account settings and the position panel are the places to verify this, and the help centre documents how averaging affects the displayed liquidation price.

Working backwards to a position size

Once you know your intended liquidation distance and the margin you are willing to commit, the sizing step becomes arithmetic rather than guesswork. Take the margin you have decided to dedicate to this single idea, note the maintenance margin requirement for your tier, and see what leverage keeps the liquidation level at or beyond your chosen distance. If the leverage needed to reach that distance is higher than you are comfortable with, the correct adjustment is to reduce the notional size, not to accept a closer liquidation. Reducing size widens the distance at the same margin.

A useful habit is to compute the distance twice: once with the entry price you plan and once with a worse entry a little further from the market, to see how sensitive the result is. Positions entered after a fast move often sit in a different tier or against a different mark price than the preview suggested. If the two calculations diverge sharply, that is a signal to wait rather than to size up.

Fees belong in the same worksheet, because they are a real cost of opening and closing and they reduce the buffer that keeps you away from liquidation. The exact maker and taker rates for your contract and account tier are listed on the official fee schedule, and they can differ between spot, perpetual and expiry contracts. Record the rate that applies to you next to the position size so that later reviews reflect the true cost of the round trip. Do not rely on remembered figures; the fee page is the source of truth and it can be updated.

Recording, reviewing and stopping

Keep a simple log for each futures position: date, contract, direction, margin mode, position mode, entry price, size, leverage, the liquidation price shown by the platform, your intended liquidation distance, and the fees you expect to pay. Add the exit price and the realised result when the trade closes. After a handful of entries, patterns appear: repeated entries that end with liquidation closer than intended usually mean the sizing step is being skipped under time pressure, not that the market is unusually hostile.

Set explicit stop conditions for the routine itself, not only for the trade. If the platform's displayed liquidation price differs materially from your own calculation, stop and recheck the tier, the margin mode and whether the position was averaged before opening anything else. If you cannot find the relevant contract specification or risk limit page, treat that as a reason to stay flat until you can. If a position has moved so far that its liquidation distance no longer matches your plan, the honest options are to reduce size or close, and deciding which in advance removes the temptation to improvise.

Finally, review the routine on a schedule. Contract specifications, risk limit tiers and fee schedules are published documents that can change, so re-read the relevant help centre pages periodically and update your worksheet rather than trusting an old screenshot. This keeps the method tied to current published information and keeps your own records meaningful over time.

Risk boundary: Bybit Italy Guide

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Scenario checkpoint

• Before opening, write down the intended liquidation distance as a percentage move from entry, and do not open the trade if you cannot state it.
• Confirm margin mode, position mode and the risk limit tier that matches the size you are about to open, since tiers change the maintenance requirement.
• Check the official fee schedule for the maker and taker rates that apply to your contract and account tier, and record them next to the position.
• Compare the liquidation price shown in your position panel with your own calculation; if they differ, stop and recheck tier, margin mode and any averaging.
• Log entry, size, leverage, displayed liquidation price, fees and exit for every futures position so reviews are based on records rather than memory.
• Re-read the contract specification and risk limit pages periodically and update your worksheet when published details change.