Leverage and margin sit at the heart of futures trading, and getting them wrong is one of the fastest ways to run into trouble. This guide breaks down what margin actually is, how leverage amplifies both sides of a trade and how the whole system is built to keep the market solvent.
Margin in futures trading is money you set aside with your broker to open and maintain a futures position. It acts as collateral to show that you can cover potential losses on the contract. It’s not a down payment on the underlying asset and it’s not money borrowed from the broker.
Futures exchanges and brokers require margin to help cover daily gains and losses and reduce the risk that one party can’t meet its obligations.
For example, suppose a futures contract has a total value of $50,000 and the broker requires $5,000 in margin. You only need to set aside the $5,000 to open the position, but your gains and losses are still based on movements in the full $50,000 contract value.
This is different from margin in stock trading. With stocks, trading on margin usually means borrowing money from your broker to help pay for shares. For example, if you buy $10,000 worth of stock using $5,000 of your own money and $5,000 borrowed from your broker, you owe that borrowed amount back, usually with interest.
Leverage in futures trading is the mechanism that lets you manage a larger amount of market exposure with a comparatively small deposit. It comes directly from how margin works: You post a fraction of the contract's value, so your exposure is a multiple of your outlay.
This relationship is usually expressed as a simple ratio, e.g., 1:10. To calculate it, divide the notional contract value by the required margin.
So, if a contract represents $10,000 in notional exposure and requires $1,000 in margin, the leverage ratio is 1:10 ($10,000 ÷ $1,000). That means every dollar of your margin is doing the work of ten dollars of exposure.
The catch is that leverage cuts both ways – it amplifies both profits and losses. Because you’re controlling the full notional value of a contract with a smaller deposit, any percentage price move produces a proportionally larger percentage change in your margin equity.
Working through the same hypothetical example of a 1:10 leverage ratio, a 5% favorable move in the underlying translates to roughly a 50% gain on your posted margin, while a 5% adverse move erases roughly half of it.
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Initial margin in futures, sometimes called a performance bond, is the amount (expressed as a percentage) you need to open a position in the first place. It’s designed to cover a large majority of expected market moves within a defined risk period.
Margin isn’t a static amount and the requirement is set per futures contract. It’s also recalculated at least once daily using risk modelling. These risk models typically consider factors like market volatility, the type of asset being traded and how the contract behaves over time. Higher volatility generally pushes initial margin up, because the buffer needs to absorb bigger potential swings.
Maintenance margin is the minimum amount you must keep in your margin account to hold an open futures position. It sits below initial margin, creating a buffer for normal price fluctuation. If margin equity falls below maintenance margin, you’ll be placed on ‘margin call’, which means you have to restore the account up to the initial margin level. If you don’t, the position will automatically be closed.
The gap between initial and maintenance margin is your working cushion. How wide is the cushion? It’s commonly set at approximately 50% to 75% of initial margin. This range is illustrative and varies by product and clearinghouse, so treat it as a general guide rather than a fixed rule.
Because both are called ‘margin’, it’s easy to assume futures and stock margin work the same way, but they don’t. The table below explains the main differences.
Futures margin | Stock (equity) margin | |
Capital nature | Performance bond; a good-faith collateral deposit | Cash loan from a broker that must eventually be repaid |
Interest payable | Generally, none, as it acts as a deposit rather than borrowed funds | Borrowed funds typically accrue interest over time |
Asset ownership | A derivatives contract, not partial payment on a purchase | Ownership of the underlying shares |
The difference continues after the position is opened. In a futures margin account, gains and losses are reflected in the account daily. A stock margin account works more like a loan account. You’d have borrowed money from the broker to help buy shares, so the borrowed balance remains outstanding and may accrue interest until it’s repaid.
When a futures position moves against you, a fairly mechanical sequence kicks in.
It’s important to note that, as leverage increases, a smaller margin is posted and the buffer against adverse price movement narrows. So, a smaller move in the underlying asset price can exhaust posted margin and trigger margin call or liquidation.
Traders and platforms may use different controls to limit how much capital is exposed to a position or account.
Read about cross margin and isolated margin
How do initial margin and maintenance margin differ?
Initial margin is required to open a position. Maintenance margin is the lower amount you must have in your account to keep the position open. Margin call is issued if your equity falls below this threshold.
Can you lose more than your initial margin in futures trading?
Yes, it’s possible. Margin doesn’t cap potential losses; adverse price movements can push account equity below zero and your broker may require additional funds to cover any deficit.
What is a margin call in derivatives trading?
If margin equity falls below the maintenance margin level, a call must be issued to bring the account back up to the initial margin requirement. In short, it’s a demand to top up your collateral before positions are at risk of being closed.
Does futures leverage incur daily interest charges?
Generally, no. Because futures margin acts as a good-faith deposit rather than borrowed funds, traders generally don’t pay interest on it. In stock margin accounts, on the other hand, borrowed funds typically accrue interest over time.
How is the leverage ratio calculated in futures?
The futures leverage ratio is the notional contract value divided by the required margin. So, for example, a $10,000 notional position backed by $1,000 of margin represents a 1:10 ratio.
What is the difference between isolated margin and cross margin?
Isolated margin is when collateral is dedicated to an individual position rather than shared across an account. Cross margin shares account equity across positions.
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