How to Calculate Liquidation Price in Perps

By Editorial Team · July 2026

Who This Is For

This guide is for crypto traders who are new to perpetual futures and want to understand how liquidation price works so they can manage risk before they open a position.

What You’ll Need

• A cryptocurrency exchange account that offers perpetual futures (Binance, Bybit, dYdX, or similar)
• A basic understanding of leverage (e.g., 5x, 10x, 20x)
• A calculator or the exchange’s built-in liquidation price tool
• A clear idea of how much capital you’re willing to lose on a single trade
• Access to the contract specifications page for the pair you want to trade

Step 1: Understand the Core Components

Before you can calculate anything, you need to know three numbers: your entry price, your leverage, and your margin mode. The entry price is where you open the position. The leverage is how much your position size is multiplied relative to your margin. And the margin mode — either isolated or cross — determines how much of your wallet balance is at risk.

Let’s say you open a long position on Bitcoin at $60,000 with 10x leverage and $500 of margin. Your position size is $5,000 ($500 × 10). If the price drops 10% from $60,000 to $54,000, your position loses $500 — that’s your entire margin. So your liquidation price is roughly $54,000. That’s the simplified version.

But in reality, exchanges also factor in the maintenance margin, which is a small percentage (usually 0.5% to 1%) that you must keep in the position to avoid liquidation. So the actual liquidation price is slightly different from that simple 1/leverage calculation. Most exchanges use a formula like: Liquidation Price = Entry Price × (1 ± 1/Leverage) for isolated margin, adjusted for the maintenance margin rate.

Step 2: Use the Exchange’s Built-in Calculator

Every major exchange provides a liquidation price calculator in the trading interface. On Binance, you’ll find it under the “Calculator” tab next to the order entry panel. On Bybit, it’s in the “Trade” section. These tools are accurate because they pull the exact maintenance margin rate and contract specifications for the pair you’re trading.

Here’s how to use it. Select your pair (say, ETH/USDT). Choose “Long” or “Short.” Enter your entry price, say $3,000. Enter your leverage, say 20x. Enter your margin amount, say $100. The calculator will show your position size ($2,000), your liquidation price, and your bankruptcy price. The bankruptcy price is where your margin hits zero — the liquidation price is slightly higher because the exchange keeps the maintenance margin.

For a long at $3,000 with 20x leverage, the calculator might show a liquidation price around $2,850. That means a 5% drop wipes you out. If that seems too tight, you can lower your leverage to 5x. Now the liquidation price might be around $2,400 — a 20% drop. You decide how much risk you can stomach.

Step 3: Calculate Manually for Cross Margin

Cross margin is trickier because your liquidation price depends on your entire wallet balance, not just the margin on that one position. In cross margin mode, the exchange uses all available funds in your futures wallet to keep your position open. That means your liquidation price can shift if you have other positions or open orders.

To estimate your liquidation price in cross margin, you need to know your total wallet balance, your position size, and the maintenance margin rate. The formula is roughly: Liquidation Price = Entry Price × (1 – (Wallet Balance – Maintenance Margin) / Position Size) for longs. But honestly, most retail traders should just use the exchange’s calculator. Manual calculation is error-prone, especially when you factor in funding fees and open order margin.

One concrete example. Say you have $2,000 in your futures wallet. You open a 1 BTC long at $60,000 with 10x leverage. Your position size is $60,000, and your initial margin is $6,000. But cross margin means the exchange looks at your $2,000 wallet balance, not the $6,000 initial margin. Your liquidation price is much closer than you think — because you only have $2,000 to absorb losses on a $60,000 position. That’s a 3.3% drop to liquidation. So cross margin doesn’t always save you. Sometimes it’s actually riskier than isolated margin if you have a small wallet relative to your position.

Step 4: Account for Funding Fees and Slippage

Liquidation price isn’t static. It changes as funding fees are paid or received. Funding fees are periodic payments between longs and shorts based on the difference between the perpetual contract price and the spot price. If you’re on the paying side, your liquidation price creeps closer to your entry with every funding interval.

And then there’s slippage. When the market moves fast, your liquidation might execute at a worse price than the theoretical liquidation price. If a bunch of longs are getting liquidated at once, the price can cascade. Your order might fill 1% or 2% below the calculated price. That’s why you should never trade right at your maximum risk level.

So a practical rule: add a 5% buffer to your liquidation price. If the calculator says your liquidation is at $54,000, assume it could be $53,000 or even lower in a fast market. Set your actual stop-loss above the liquidation price — not below it. This way, you exit the trade before the exchange does it for you at a potentially worse price.

Common Pitfalls and Risks

⚠️ Risk: Ignoring maintenance margin. New traders often use the simple 1/leverage formula and think that’s the liquidation price. But exchanges charge a maintenance margin (usually 0.5% to 1%) that pushes liquidation slightly closer. On a $60,000 Bitcoin long with 10x, that could be $300 to $600 closer. It might not seem like much, but in a volatile market, those few hundred dollars matter.

Mitigation: Always use the exchange’s liquidation calculator, not a mental formula. Check the maintenance margin rate for your specific pair. It’s listed in the contract specifications.

⚠️ Risk: Using cross margin without understanding it. Cross margin shares your entire wallet balance across all open positions. If you have three positions open and one starts losing, it can drain the margin from your other positions. A losing trade can pull down your whole portfolio.

Mitigation: Use isolated margin for individual trades, especially if you’re new. Isolated margin caps your loss to the margin on that specific position. And don’t open multiple high-leverage positions at the same time unless you have a clear risk-management plan.

⚠️ Risk: Not accounting for funding fees. On some pairs, funding fees can be 0.1% every 8 hours. If you hold a position for 3 days, that’s almost 1% in fees. Those fees reduce your margin and move your liquidation price closer. On a 20x leverage trade, that 1% fee is actually a 20% reduction in your margin relative to your position size.

Mitigation: Check the current funding rate before opening a position. Avoid pairs with high positive funding rates if you’re going long. And for longer-term trades, consider using dated futures instead of perpetuals to avoid funding fees entirely.

What Next?

Now that you know how to calculate and manage liquidation price, open a small test position on a testnet or with minimal capital to practice setting stop-losses above your liquidation level.

Sources & References

• Investopedia — Liquidation Definition
• CoinDesk — What Are Perpetual Futures?
• SEC — Investor Bulletin: Futures Trading
• For a broader introduction to crypto trading, read our guide on AI Mean Reversion Recovery Factor above 3.
• To understand how leverage works in practice, check out 6 Ways to Change Leverage on Binance Futures Safely.
• For more on risk management, see our article on AI Based Internet Computer ICP Futures Scalping Strategy.

— Editorial Team