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Leverage lets you control a larger perpetual-futures position with less opening collateral, but it does not reduce the position’s exposure to price moves. Your position remains open only while its collateral and profit-and-loss satisfy the exchange’s maintenance-margin rules. If the account or position falls below that threshold, the exchange can liquidate it, generally using the contract’s mark price rather than the last traded price.
Three calculations must be kept separate: initial margin to open the trade, maintenance margin to keep it open, and liquidation price—the mark-price level at which the maintenance test fails. The exact result depends on the contract, notional-size tier, margin mode, collateral, other positions and the venue’s current rules.
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What leverage means in a perpetual futures trade
Leverage is the ratio between your position’s notional value and the initial margin committed to open it. A 10x setting, for example, means the initial collateral is intended to be one-tenth of the position value; it does not mean losses are limited to one-tenth of the position or that the exchange absorbs the remaining risk.
For USDT-settled perpetuals, Bybit states the opening relationship as:
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Initial margin = position value ÷ leverage
and:
Position value = quantity × mark price
Thus, a 20,000 USDT position opened at 10x requires 2,000 USDT of initial margin before fees and any venue-specific adjustments. Choosing 20x would reduce the opening-margin requirement to 1,000 USDT for that same notional, but the position would still gain or lose according to the full 20,000 USDT exposure. A 1% adverse move in the underlying changes a 20,000 USDT position’s unrealized PnL by approximately 200 USDT, before fees and funding.
Leverage can be selected explicitly or implied by the amount of collateral assigned to a position. Exchanges also impose maximum leverage by contract and by notional tier. Larger positions can move into a tier with lower permitted leverage and a higher maintenance requirement, so the leverage number shown in an order ticket is not necessarily available for every position size.
Initial margin and maintenance margin are different
Initial margin: collateral required to open
Initial margin is the opening collateral calculation. It is based primarily on notional value divided by selected leverage, with the exchange’s contract rules, fees and risk controls applied. It answers: “How much collateral must be posted to establish this position?” It does not tell you how far the market can move before liquidation.
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Maintenance margin: collateral required to remain open
Maintenance margin is the minimum collateral needed to keep the position open. Binance describes liquidation as occurring when collateral—initial collateral plus realized and unrealized PnL—falls below the applicable maintenance margin. The requirement is generally tied to the position’s notional size and risk tier, not simply to a fixed percentage of the original deposit.
Because unrealized losses reduce collateral, a position can fail the maintenance test even though the nominal leverage setting has not changed. Conversely, adding eligible collateral or realizing profits can increase the buffer. Maintenance rates, fixed maintenance amounts, and tier boundaries vary by contract and can change over time.
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What a liquidation price actually represents
Your liquidation price is the mark-price level at which the exchange’s position or account calculation reaches its maintenance threshold. It is an operational trigger, not a universal formula and not necessarily the exact price at which every order is filled. Liquidation engines may close all or part of a position according to the venue’s procedures, and fees, funding, liquidity and insurance mechanisms can affect the final outcome.
The mark price is important because exchanges use it to calculate unrealized PnL and reduce the chance that a brief last-trade spike alone triggers liquidation. The mark-price methodology is venue-specific. A chart’s last traded price can therefore be above or below the displayed liquidation price without an immediate liquidation if the mark price has not crossed the relevant threshold.
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Inputs used by liquidation calculations
Depending on the venue and margin mode, the calculation can include:
- Entry price, direction (long or short) and position quantity.
- Current mark price and the resulting unrealized PnL.
- Wallet or position collateral, including any realized PnL.
- The maintenance-margin rate and fixed maintenance amount for the current notional tier.
- Other positions and their unrealized PnL when cross margin is used.
- Contract-specific risk limits, fees, funding and liquidation procedures.
These inputs explain why a simple rule such as “liquidation occurs after a loss equal to the deposit” is unreliable. The exchange is testing collateral against a tiered maintenance requirement while prices and account balances change continuously.
Isolated versus cross margin
Margin mode determines which collateral is exposed to a position and which positions influence its liquidation calculation. The labels are common, but the exact eligible assets, netting and liquidation sequence are exchange-specific.
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| Margin mode | Collateral considered | Risk boundary | Important operational detail |
|---|---|---|---|
| Isolated | The balance assigned to that position, subject to the venue’s rules | Usually confined to the individual position; other positions are not normally used to support it | Long and short positions may be liquidated independently. Some venues offer automatic replenishment from available account balance. |
| Cross | Eligible account balances and PnL from positions covered by the cross account | Positions share a collateral pool, so one trade can affect the liquidation capacity of others | The displayed liquidation price changes with account-wide collateral, PnL, positions and risk tiers. |
How isolated margin behaves
With isolated margin, the amount assigned to a position is considered separately. A losing position can consume its allocated collateral without automatically drawing on the rest of the account. Bybit states that isolated long and short positions may be liquidated independently. This compartmentalization limits the loss attributable to that position to the assigned collateral, although it does not prevent slippage, fees or a loss of the entire allocation.
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How cross margin behaves
Cross margin uses eligible account balances to support positions and calculates liquidation using the broader account state. A profitable position may help offset an unrealized loss elsewhere, while a large loss can reduce the buffer available to every cross-margined position. Exact collateral eligibility, currency conversion, hedging and netting rules must be read in the venue’s contract documentation.
Bybit describes a venue-specific hedge-mode procedure in which fully hedged positions may first be closed at mark price to release margin, followed by partially hedged positions if account risk remains unresolved. That sequence should not be assumed for another exchange.
Why the displayed liquidation price changes
A liquidation estimate is a live result, not a permanent property of the trade. It can move when any material input changes:
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- Mark price: Unrealized PnL changes continuously as the mark moves.
- Added or removed margin: More eligible collateral generally increases the distance to liquidation; withdrawing it generally decreases that distance.
- Position size: Increasing notional can raise the maintenance requirement and push the position into another risk tier.
- Other positions: In cross mode, their PnL and collateral alter the account calculation.
- Realized PnL, fees and funding: These change the remaining collateral available to satisfy maintenance requirements.
- Tier parameters: Maintenance rates, fixed maintenance amounts and maximum leverage can be revised by the venue.
Binance’s 2026-09-25 announcement on USDⓈ-M perpetual-contract margin tiers illustrates this last point: named contracts received updated limits and maintenance rates, and existing positions were affected. A tier table copied from an older article is therefore not a current universal schedule. Check the contract page and the values displayed in your account before relying on a liquidation estimate.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.A worked maintenance-margin example
Binance’s liquidation-price guide, published on 2020-06-11 and updated on 2025-12-31, illustrates the maintenance calculation as:
Maintenance margin = position notional × maintenance-margin rate − maintenance amount
In its BTCUSDT example, the position size is 10 BTC and the mark price is 26,000 USDT, giving a 260,000 USDT notional. The guide places that example in margin tier 3 and uses a 1% maintenance rate and a 1,300 USDT maintenance amount:
260,000 × 1% − 1,300 = 1,300 USDT
The resulting 1,300 USDT maintenance margin belongs to that cited example. The 1% rate, 1,300 USDT amount and tier placement are not current universal BTCUSDT parameters.
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Suppose, purely to illustrate the opening-margin relationship, that the same 260,000 USDT notional were opened at 10x. Initial margin would be 26,000 USDT before other charges. That 26,000 USDT figure is not a liquidation price or a guarantee that a 10% adverse move can be tolerated: liquidation depends on the remaining collateral, unrealized PnL and the tiered 1,300 USDT maintenance requirement in the example. The arithmetic demonstrates why “position divided by leverage” solves only the opening-margin question.
How to estimate your liquidation risk without guessing
- Identify the exact contract and settlement asset. Record whether it is the USDⓈ-M, coin-margined or another perpetual product, because each can have different tiers and collateral rules.
- Confirm the margin mode. Note isolated or cross, and whether hedge mode treats long and short legs independently or nets them.
- Record the current position data. Capture direction, quantity, entry price, mark price, assigned margin and unrealized PnL.
- Find the current risk tier. Use the venue’s contract specification or account panel to identify the applicable notional range, maximum leverage, maintenance rate and fixed maintenance amount.
- Read the account’s displayed liquidation estimate. Treat it as a venue-specific live calculation, not as a value that can be transferred to another exchange.
- Stress-test the buffer. Consider mark-price moves, fees, funding, collateral withdrawals, a size increase and losses on other cross-margined positions.
- Set a voluntary exit before liquidation. A stop order or manual exit can reduce exposure earlier, but order-trigger and execution rules differ from liquidation rules.
What to compare when choosing a perpetual-futures setup
Do not compare leverage numbers alone. Use the following checklist for the exact contract and account configuration:
- Price reference: Which mark-price methodology determines unrealized PnL and liquidation?
- Maximum leverage by tier: At what notional does the permitted leverage fall?
- Maintenance schedule: What rate and fixed amount apply to each tier, and when was the schedule last updated?
- Collateral scope: Which balances and assets count under isolated and cross margin?
- Hedge treatment: Are opposing legs independent, partially netted or fully netted?
- Risk procedures: How are partial liquidation, auto-deleveraging, insurance-fund actions or other account-risk steps handled?
- Margin replenishment: Can the system automatically transfer funds into an isolated position?
These operational details can produce materially different liquidation outcomes even when two platforms show the same nominal leverage.
Common mistakes and how to avoid them
Using leverage as a loss limit
Leverage changes the collateral needed to open a position; it does not cap the percentage move against the full notional. Size the position first, then choose leverage that leaves a practical maintenance buffer.
Calculating from the last traded price
Liquidation is generally tied to mark price. A last-price chart may not match the trigger used by the risk engine, especially during volatile periods.
Assuming every contract has the same tiers
Maintenance rates, fixed amounts and maximum leverage are contract-specific and can change. Use the current contract page and account display rather than a copied schedule.
Ignoring cross-account contagion
With cross margin, another position’s loss, a collateral withdrawal or a change in available balance can move the liquidation estimate. Review the whole cross account, not just one order ticket.
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Funding and trading or liquidation fees reduce collateral. Auto-margin replenishment can draw additional account funds into an isolated position if enabled, changing the amount at risk.
Quick Recap
Practical safeguards
- Keep position notional small enough that ordinary mark-price volatility does not consume the maintenance buffer.
- Prefer isolated margin when you need a hard boundary around the collateral assigned to one trade, and verify that automatic replenishment is off if you do not want additional funds transferred.
- Use cross margin only after understanding which balances and positions are linked.
- Recheck the liquidation estimate after every size change, margin transfer, hedge adjustment or tier change.
- Maintain a separate cash reserve rather than treating all available account balance as trading collateral.
- Read the venue’s current liquidation and risk-disclosure documents before trading; examples from another contract or date are educational, not account instructions.
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