Introduction to perpetual trading and margin types
Perpetual futures—commonly called perps—are crypto derivatives that let traders speculate on an asset's price without owning it and without an expiry date [1] [2]. Unlike traditional futures that settle on a fixed date, perpetual contracts use a funding rate mechanism to keep their price anchored to the underlying spot market, with payments typically exchanged between longs and shorts every eight hours [1] [2].
Margin is the collateral traders deposit to open and maintain a leveraged position. The choice of margin mode—cross or isolated—directly determines how that collateral is allocated, how liquidation is calculated, and how much of the account is exposed to any single trade.
In cross margin, all open positions share a single collateral pool. In isolated margin, each position is ring-fenced with its own dedicated collateral. The right mode depends on a trader's strategy, risk tolerance, and how actively they want to manage each position.
For someone who is new to perpetual futures entirely, it helps to start with the fundamentals: MetaMask's self-custodial perps product, powered by Hyperliquid, offers a beginner-friendly introduction to perps trading with built-in risk controls like stop-loss and take-profit orders, up to 40x leverage, and self-custody of assets throughout [2] [3] [4].
Disclaimer: This guide is for educational purposes only. It is not financial advice, not a solicitation, and not for UK audiences. Perpetual futures are risky and not suitable for all users.
What is leverage in perpetual futures trading?
Leverage allows a trader to control a position larger than the deposited capital, amplifying both potential gains and potential losses. It is expressed as a multiplier of the margin.
How leverage works in practice:
Leverage
Margin deposited (collateral)
Position size
Price move to lose entire margin
2x
$1,000
$2,000
50%
5x
$1,000
$5,000
20%
10x
$1,000
$10,000
10%
25x
$1,000
$25,000
4%
40x
$1,000
$40,000
2.5%
At 10x leverage, a $100 deposit controls a $1,000 position: a 1% favorable price move yields a 10% return on the margin, but a 1% adverse move costs 10% of the margin [2] [4]. As leverage increases, the distance to liquidation compresses—meaning smaller market moves can wipe out the collateral.
Leverage on perpetual futures varies by platform and asset. MetaMask Perps via Hyperliquid supports up to 40x leverage, and the exact limit may vary depending on the specific market and liquidity conditions [4]. Some centralized exchanges offer up to 125x on major pairs like BTC/USDT.
Key principle: Leverage is not free money. It magnifies outcomes in both directions. Leverage is set before opening a position and, on most platforms, is fixed for the life of that position [4].
Understanding cross margin
How cross margin works
Cross margin pools the total available account balance as shared collateral for every open position. When multiple trades are open, they all draw from the same margin balance. Unrealized profit-and-loss (PnL) from each position continuously adjusts the total equity, and that combined equity supports all open trades simultaneously.
In practice, this means:
If Position A is profitable and Position B is losing, the unrealized gains from A can automatically offset losses in B, keeping B above its maintenance margin threshold.
Excess margin from closed or profitable trades is immediately available to support other positions.
The effective liquidation price on any individual trade is influenced by the performance of the entire portfolio.
Cross margin can delay or prevent liquidation on a struggling trade—but the tradeoff is that the entire account balance is exposed. If cumulative losses across all positions exceed total equity, every open position can be liquidated together.
Advantages of cross margin
Automatic loss offsetting: Gains from winning positions cushion drawdowns on losing ones, potentially preventing forced liquidation on any single trade.
Capital efficiency: Because unrealized gains increase the available margin, a trader can deploy capital more efficiently with less sitting idle. One dollar of equity can simultaneously support multiple positions.
Simplified management: Track one consolidated margin balance and one overall margin ratio rather than monitoring each position independently.
Natural fit for hedging: If running a hedged strategy (e.g., long spot / short perp basis trade), cross margin lets the two legs offset automatically, reducing the capital required.
Risks and tradeoffs of cross margin
Whole-account exposure: A single catastrophic trade can drain the entire balance, including unrealized gains from other positions.
Correlated crash risk: During a broad market selloff, if multiple positions move against the trader simultaneously, the shared collateral can be consumed faster than any individual position's losses would suggest.
Harder to quarantine bad trades: A trader cannot limit the damage of one position without closing it or switching it to isolated mode (where supported).
Cascading liquidation: If equity falls below combined maintenance requirements, the platform may liquidate all positions—not just the worst performer.
Frequently used by: Experienced traders running multi-leg strategies, basis trades, hedged portfolios, or carry trades where positions are intentionally correlated or offsetting.
Understanding isolated margin
How isolated margin works
Isolated margin assigns a specific amount of collateral to each individual position. If that position deteriorates, only the allocated margin is at risk; the rest of the account balance is fully insulated.
The margin is defined for each trade when it is opened and a trader can typically add or remove collateral manually afterward. The worst-case loss per trade is capped at the isolated margin that is assigned—a trader cannot lose more than what they've committed to that position [2] [5].
In practice, this means:
Each trade operates as if it were in its own sub-account.
If Position A is liquidated, Positions B and C are completely unaffected.
Each position's margin level must be actively monitored, and topped up if needed.
Advantages of isolated margin
Contained risk per trade: The maximum loss on any position is the collateral assigned. The broader account is protected. This is particularly valuable for MetaMask Perps, where the platform automatically closes the position at liquidation so a trader cannot lose more than their margin [2].
Ideal for experimentation: When testing new tokens, unfamiliar strategies, or high-leverage setups, isolated margin lets a trader define exactly how much they're willing to lose before entering.
Clear risk boundaries: Each position has a defined maximum loss, making post-trade analysis and systematic risk management straightforward.
Prevents cascading liquidations: Unlike cross margin, one bad trade cannot trigger a chain reaction that wipes out the entire account.
Risks and tradeoffs of isolated margin
Higher management overhead: Each position must be monitored independently. If a trade approaches liquidation, surplus funds elsewhere in the account will not automatically rescue it.
Fragmented capital: Collateral locked in one position cannot support another, potentially leading to inefficient capital usage when running multiple trades.
No automatic PnL offset: Profits in one position don't reduce the liquidation risk of another. Each trade stands alone.
Risk of premature liquidation: If a trader does not actively top up a position approaching its maintenance threshold, it will be liquidated even when there is ample free balance in the account.
Frequently used by: Traders who want strict per-trade risk limits, beginners learning the mechanics, anyone trading volatile or illiquid assets, and strategies where individual position independence is a priority.
Key differences between cross margin and isolated margin
Side-by-side comparison
Feature
Cross margin
Isolated margin
Collateral scope
Shared across all open positions
Dedicated to each individual position
Liquidation trigger
Total account equity vs. combined maintenance margin
Individual position equity vs. that position's maintenance margin
Loss containment
Portfolio-level; entire account balance at risk
Trade-level; only the allocated margin at risk
PnL offsetting
Yes—gains from one position can cover losses in another
No—each position's PnL is independent
Capital efficiency
Higher; idle capital is minimized
Lower; collateral is fragmented across positions
Management complexity
Lower; one margin ratio to monitor
Higher; each position tracked separately
Cascading liquidation risk
Yes; a broad selloff can liquidate all positions
No; liquidation is confined to the individual trade
Decision matrix: Examples of cross vs isolated margin in practice
The situation
Mode
Potential rationale
Running a hedged long/short strategy
Cross
Legs naturally offset; shared collateral reduces capital requirements
Testing a new token or strategy
Isolated
Caps downside to a defined amount
Holding 2–3 correlated positions
Isolated
Prevents correlated drawdowns from cascading
Executing a basis or carry trade
Cross
PnL offset between legs is the core value proposition
High-leverage scalp on a volatile asset
Isolated
Limits worst-case loss to the assigned margin
Single concentrated position
Either
Cross offers no offsetting benefit with one position; isolated provides a hard cap
Maintenance margin and liquidation mechanics
What is maintenance margin?
Maintenance margin is the minimum equity a trader must hold in their position (isolated) or account (cross) to keep trades open. If the equity falls below this threshold, the exchange initiates liquidation.
Maintenance margin requirements vary by platform, asset, and position size. Typical maintenance margin rates on major exchanges range from approximately 0.4% to 1.0% of notional value for large-cap assets like BTC and ETH, increasing for smaller-cap or more volatile tokens and for larger position tiers. (Note: Rates may vary by exchange.) For example:
BTC/USDT perpetual: Maintenance margin commonly ranges from 0.4% to 0.5% of notional for standard tiers.
Altcoin perpetuals: Maintenance rates often increase to 1%–2.5% for mid-cap assets.
Tiered systems: Many exchanges use tiered maintenance margins where larger positions require proportionally more maintenance margin, discouraging excessive concentration.
How liquidation works
In cross margin mode:
The platform continuously monitors total account equity against the sum of maintenance requirements across all positions.
If equity falls below the combined threshold, the exchange may attempt partial liquidation—reducing position sizes incrementally to restore the margin ratio.
If partial liquidation is insufficient, all remaining positions may be closed at market prices.
In isolated margin mode:
Each position's equity is tracked against its own maintenance margin.
When a position's equity breaches its maintenance level, that position—and only that position—is liquidated.
All other positions and the free balance remain intact.
Important nuances:
Most exchanges calculate liquidation against the mark price (a dampened index price derived from multiple spot exchanges), not the last traded price. This protects traders from manipulation-driven liquidations caused by thin order books on a single venue.
Liquidation during fast markets involves slippage: the actual exit price may be worse than the theoretical liquidation price, especially for large positions or illiquid assets.
Some platforms employ auto-deleveraging (ADL) as a backstop: if liquidation orders cannot be filled and the insurance fund is depleted, profitable traders on the opposing side may have their positions automatically reduced to cover the loss. ADL ranking is typically based on a combination of leverage and profit percentage.
Insurance funds and socialized loss
Major exchanges maintain insurance funds—pools of capital that absorb losses when liquidated positions cannot be closed at or above the bankruptcy price (the price where margin reaches exactly zero). If the insurance fund is sufficient, other traders are unaffected. If it's depleted, the platform may apply socialized loss (spreading the shortfall across profitable traders) or trigger ADL. Insurance fund balances are typically published and updated in real time by major platforms.
Calculating liquidation price
The liquidation price is the market level at which the remaining position equity drops to (or below) the maintenance margin requirement. Understanding this calculation is essential for managing risk in perpetual futures trading [1].
Isolated margin example
Consider the following isolated long position:
Parameter
Value
Entry price
$50,000
Position size
0.2 BTC (≈ $10,000 notional)
Leverage
10x
Initial margin (collateral)
$1,000
Maintenance margin (0.5% of notional)
$50
Step-by-step calculation:
Maximum allowable loss = Initial margin − Maintenance margin = $1,000 − $50 = $950
PnL formula = Position size × (Current price − Entry price) = 0.2 × (P − $50,000)
Set PnL equal to the negative max loss: 0.2 × (P − $50,000) = −$950
Solve for P: P − $50,000 = −$4,750 → P = $45,250
If BTC falls to $45,250, the position hits liquidation. Any price below that and the exchange's liquidation engine closes the trade automatically.
Cross margin adjustment
In cross margin mode, the same mathematical logic applies, but the equity is not limited to the margin assigned to a single position. Instead, it includes the entire account balance—unrealized PnL from all open positions plus any free cash [4]. This means:
The effective liquidation price is further from the entry (more cushion) when the rest of the portfolio is profitable or a trader holds surplus funds.
Conversely, a losing position in one pair can drain equity from other positions, potentially triggering cascading liquidations across the portfolio.
Important: Exact liquidation formulas differ by platform, contract type (linear vs. inverse), and fee structures. Use an exchange's built-in liquidation calculator for precise figures. On MetaMask Perps via Hyperliquid, MetaMask will automatically close the position at liquidation, so a trader cannot lose more than the margin [1].
Why this matters for margin mode selection
This calculation reveals the core trade-off: isolated margin gives a predictable, per-trade liquidation price, while cross margin makes liquidation a portfolio-level event that fluctuates as the other positions and balance change. Neither is inherently better—the right choice depends on the trading strategy, position count, and risk tolerance.
Common causes of liquidation
Liquidation is the forced closure of a position when the equity falls below the maintenance margin requirement. It is one of the most significant risks in leveraged perpetual futures trading [1]. Here are the primary causes:
Excessive leverage: Higher leverage means a smaller price move can wipe out the margin buffer. At 40x leverage, a 2.5% adverse move can trigger liquidation; at 5x, there is approximately 20% of breathing room [1].
Sudden volatility spikes and gapping markets: Flash crashes, liquidation cascades, or macro news events can move prices faster than a trader can react—especially outside traditional market hours when liquidity may thin.
Insufficient collateral or failure to top up in time: In isolated margin, if a trader doesn't add margin before the price reaches the liquidation level, the position closes automatically. In cross margin, failing to monitor the overall account health can lead to unexpected liquidations across multiple positions [4].
Ignoring funding costs and fees that erode equity: Funding payments, trading fees, and potential slippage all reduce the effective margin over time. A position that appears safe at entry can drift toward liquidation simply through accumulated costs.
Correlated positions in cross margin: If a trader holds multiple long positions in highly correlated assets (e.g., BTC and ETH during a broad market selloff), losses compound simultaneously, accelerating equity depletion.
Thin liquidity on the traded pair: Illiquid markets often exhibit wider spreads and slippage, meaning the actual liquidation price may be worse than the theoretical one.
Pro tip: Always set a stop-loss above the liquidation price. A stop-loss lets a trader exit on their own terms; liquidation does not. On MetaMask Perps, stop-loss and take-profit levels can be set directly when opening a position [1] [3].
Funding rates and their role in perpetual futures
What is the funding rate?
The funding rate is a periodic payment mechanism unique to perpetual futures contracts. Because perpetual contracts have no expiration date, there is no natural settlement event to anchor the contract price to the underlying spot price. The funding rate solves this by incentivizing traders to bring the perpetual price back in line with spot [1].
The rate fluctuates based on:
Market skew: The imbalance between aggregate long and short open interest.
Price deviation: How far the perpetual mark price diverges from the spot index price.
Open interest levels: Higher open interest in one direction amplifies the funding adjustment.
Funding is typically exchanged every 8 hours on major venues (00:00, 08:00, 16:00 UTC), though some platforms use different intervals.
How funding works between long and short positions
The funding mechanism is a peer-to-peer transfer—the exchange does not profit from it.
Market condition
Funding rate
Who pays
Who receives
Perp price > Spot price (bullish skew)
Positive
Longs pay
Shorts receive
Perp price < Spot price (bearish skew)
Negative
Shorts pay
Longs receive
Positive funding (longs pay shorts): This typically occurs in rising markets where demand for long exposure pushes the perp price above spot. Longs pay a fee to shorts, creating an incentive to short (or disincentive to long), which pulls the perp price down toward spot.
Negative funding (shorts pay longs): This typically occurs in falling or heavily shorted markets. Shorts pay longs, incentivizing long positions and pushing the perp price back up.
Payments occur automatically at each funding interval and directly adjust the unrealized or realized PnL. A trader does not need to take any action—the debit or credit happens if they hold an open position at the funding timestamp [1].
Who pays the funding rate and when
Only traders with open positions at the exact funding timestamp pay or receive funding. If a trader opens a position one second after the timestamp and close it one second before the next, they pay zero funding. This creates short-term trading strategies around funding intervals:
Funding rate arbitrage: Some traders go long spot and short perps (or vice versa) to capture funding payments as yield—a strategy known as basis trading or cash-and-carry.
Funding avoidance: Scalpers and short-term traders may close positions before the timestamp to avoid paying high funding rates.
Key takeaway: Monitoring funding rates is essential for understanding the true carry cost of holding a perpetual futures position. A position can be profitable on paper but net-negative after accounting for cumulative funding payments over days or weeks.
Managing risk and volatility in perpetual trading
Impact of high volatility on perpetual contracts
Crypto markets are inherently volatile—24/7 trading, global participation, and macro sensitivity create conditions where 5–15% daily moves are not uncommon. This volatility has specific consequences for perpetual futures traders:
Compressed liquidation buffers: Volatility accelerates both gains and losses. A position that has comfortable room at 3% daily volatility may be at immediate risk during a 10% flash move.
Faster margin consumption in cross mode: When multiple cross-margined positions experience simultaneous adverse moves (common in correlated crypto assets), portfolio equity can drain rapidly, triggering multi-position liquidations.
Funding rate instability: Sharp moves can flip funding rates from positive to negative (or vice versa) within a single interval, altering carry costs mid-trade and catching traders off guard.
Slippage and execution risk: During high-volatility events, order book depth can thin significantly. Market orders (including liquidation orders) may execute at prices materially worse than expected.
Gap risk: While crypto markets don't have traditional "gaps" from overnight closes, liquidity gaps around major news events or exchange outages can produce similar effects.
Strategies traders use to control liquidation risk
Effective risk management in perpetual futures trading is not optional—it is the difference between longevity and account wipeout. Here are commonly used strategies:
Set stop-losses on every position and define the maximum acceptable loss per trade before entering. On MetaMask Perps, stop-loss and take-profit can be configured at order entry [1] [3].
Scale leverage down during turbulent markets. Lower leverage provides more room for adverse price moves before liquidation. A simple rule of thumb: lower leverage equals more breathing room; higher leverage equals tighter room for error and faster liquidations [1].
Add margin buffers proactively. Don't wait for a margin call—if a position is moving against a trader and they intend to hold, consider topping up collateral early.
Diversify positions and avoid over-correlated exposure. Holding long BTC, long ETH, and long SOL simultaneously is not diversification—these assets are often highly correlated. True diversification might include opposing directional bets or uncorrelated asset classes.
Split tactics between margin modes. Run hedged, multi-leg strategies in cross margin (where gains in one leg subsidize losses in the other) and use isolated margin for experimental or high-risk trades (where maximum loss is capped).
Review funding schedules, fees, and margin ratios daily. Funding costs can accumulate quickly during trending markets and erode the edge.
Use position sizing rules. Many professional traders risk no more than 1–2% of their total account on any single trade.
Using margin modes to simplify hedging
Choosing the right margin mode is itself a risk management tool—not just a preference toggle.
Cross margin for dynamic hedging: When running hedged strategies—such as a basis trade (long spot, short perp) or a pairs trade (long ETH, short BTC)—cross margin allows gains in one leg to automatically offset losses in the other. This smooths PnL fluctuations, reduces the chance of premature liquidation on a single leg, and minimizes micro-management. The trade-off: a catastrophic move across all positions can threaten the entire balance [4].
Isolated margin for hard caps: When trading new tokens, illiquid pairs, or high-beta altcoins, isolated margin ring-fences the downside. If the trade goes to zero, a trader only loses only the assigned margin—nothing else in the account is touched. Common use cases for isolated margin:
Speculative altcoin shorts where gap risk is elevated
Testing new strategies with limited capital
High-leverage trades where traders want absolute clarity on worst-case loss
Practical example: A trader running a BTC basis trade (long spot BTC, short BTC perp to capture funding) might use cross margin so the spot gains buffer the perp's mark-to-market fluctuations. Simultaneously, the same trader might open an isolated 20x long on a low-cap altcoin, knowing the max loss on that bet is exactly the margin deposited.
Choose the margin mode that fits your perpetual trading strategy, and configure positions directly in MetaMask Mobile.
Start trading MetaMask Perps powered by Hyperliquid, fund with any EVM token, go long or short on 150+ assets with up to 40x leverage, and stay in full self-custody.
Frequently asked questions about margin in perpetual futures trading
Cross margin uses the entire account balance as collateral for all eligible trades, sharing risk and PnL across positions. Isolated margin restricts risk to the collateral assigned to each trade, so one position's performance doesn't directly impact the funding of another.
Cross margin is often used as part of multi‑leg or hedged strategies that benefit from shared collateral and PnL offsets. Isolated margin is commonly used when a trader's goal is to cap losses per trade, when trading unfamiliar or highly volatile assets, or when testing high‑risk ideas with limited capital.
Leverage amplifies both gains and losses and reduces the price move needed to reach liquidation as the multiple increases. Modest leverage can provide flexibility; aggressive leverage increases the chance that routine volatility pushes a position into liquidation.
When equity falls below the maintenance level, the platform's liquidation engine automatically closes the position—sometimes in partial steps—at market prices. In isolated margin, a trader generally loses the margin tied to that trade, plus any fees and slippage; in cross margin, liquidation can consume additional account funds and may affect multiple positions.
Funding adds a periodic cost or credit to open positions; depending on market skew and trade direction, a trader may pay or receive funding at each interval. Over time, these payments can significantly affect net PnL even if the underlying price moves only modestly, so they should be part of the entry and holding‑period calculus.
