Leverage: What Is It? Definition & Explanation

How leverage works: margin and position size

In a leveraged trade you do not pay for the whole position. You post part of it as margin (collateral), and the rest is covered by credit from the venue or by the structure of the contract. The core relationship is:

Leverage ratio = Position size ÷ Margin

A plain example: with 1,000 dollars of margin at 10x, you control a 10,000-dollar position. In this example, a 5% move in your favour makes 500 dollars, half of your margin; a 5% move against you loses the same 500 dollars (figures are illustrative and ignore fees).

Two margin levels matter:

• Initial margin: the amount needed to open the position. The higher the leverage, the smaller it is relative to the position.
• Maintenance margin: the minimum that must stay in the account while the position is open. If losses push margin below this level, the position is closed.

The logic is not unique to crypto. Investor.gov, the investor education site of the US Securities and Exchange Commission (SEC), reminds stock investors who buy on margin that a brokerage firm can demand more cash or sell securities in the account, without informing them in advance, to cover a shortfall; this is a margin call.

Losses scale too: a ~10% adverse move at 10x

Leverage does not change the price; it magnifies what the same price move does to your account. Ignoring fees and maintenance margin, the adverse move that wipes out the margin is roughly 1 ÷ leverage:

In practice maintenance margin and fees mean the position is closed before that line is reached, so the table is an optimistic bound. Crypto prices often swing several percent in a day, so highly leveraged positions can be closed by a brief, sharp wick.

Isolated vs cross margin

• Isolated margin: each position has its own margin. If it is liquidated, the loss is limited to the margin assigned to it.
• Cross margin: the whole available account balance backs all positions. A single position is liquidated later, but in a sharp move the loss can spread across the account.

The setting can change the risk of two positions opened at the same leverage completely, so check it before trading. Under cross margin, profit on one position can keep a losing one alive for a while; that does not reduce risk, it only stops it sitting in a single position.

Funding rates and liquidation

In crypto, leverage is used most in perpetual contracts. They never expire; to keep their price near spot, longs and shorts exchange periodic funding rate payments. In a policy statement dated 29 May 2026, the US Commodity Futures Trading Commission (CFTC) describes perpetual contracts as derivatives with no fixed expiration date that rely on this periodic funding mechanism to keep their price in line with the spot price.

Because funding is paid out of margin, the cost builds the longer a position stays open, and the liquidation price slowly moves closer. Liquidation is the forced closing of a position once margin falls below the maintenance level. The higher the leverage, the closer the liquidation price sits to the entry price.

Risk management: position size and stop-loss

The points below are general practice for understanding leverage risk.

• Position size: risk depends less on the leverage ratio than on how much of the account is tied to a single position. Some traders cap, in advance, the amount they accept losing on one trade at a small share of the account.
• Stop-loss orders: an order that closes the position when the price reaches a set level. Investor.gov explains that once the stop price is reached, a stop order becomes a market order. A market order fills at the best price available at that moment, so in fast, sharp moves the fill can land well away from the stop price; a stop helps limit a loss but does not guarantee a price.
• Check liquidity: a thin order book can make both a stop and a liquidation fill at a worse price than expected.
• Count the costs: trading fees and funding payments grow with leverage.

Leverage limits differ by country

Many countries cap the leverage that can be offered to retail clients:

• European Union: in a product intervention decision announced on 27 March 2018, the European Securities and Markets Authority (ESMA) limited leverage on contracts for difference (CFDs) sold to retail clients; the cap for CFDs on cryptocurrencies was set at 2:1.
• Japan: according to the Financial Services Agency (FSA) summary of its crypto-asset rules, amendments in force since May 2020 set the maximum leverage for crypto-asset margin trading with individual customers at 2x.
• South Korea: in a virtual asset lending guideline that took effect in September 2025, the Financial Services Commission (FSC) restricted lending that exceeds the value of the collateral, that is, leveraged lending.

Platforms offering leveraged products usually require identity checks (KYC) and suitability tests, and a product offered in one country is not necessarily available from another. Rules change, so check the current position on the regulator's own publications.

Leveraged products: futures, margin, perpetuals

• Futures: contracts that settle on a set date, opened with margin and closed at expiry. For the futures view on Bitcoin, see Bitcoin futures.
• Margin trading: buying or short-selling in the spot market with borrowed funds; interest is paid on the loan.
• Perpetual contracts: derivatives with no expiry, tied to spot by funding. The type that tracks a company's share price is called a stock perpetual.

Whatever the product, the value of a leveraged position depends on the underlying price; spot pages such as Bitcoin price are the reference for following it.

Comparing exchanges on leverage

Platforms differ in maximum leverage, accepted collateral, isolated or cross margin options and fees. The crypto exchange comparison guide sets these side by side, and the exchange fee calculator guide shows how fees grow with position size.

Risk note

Leverage magnifies losses as much as gains; even short-lived price moves can cost the entire margin.