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Futures margin determines how much cash you need to open and maintain a commodity futures position. Futures margin isn’t a down payment or a loan. It’s a good-faith deposit that shows you can cover losses on a position, and the rules around it decide when your broker can demand more money or close your trade.
This guide explains how it works in plain English, with a worked example, a pre-trade checklist and the mistakes that catch new traders out.
What futures margin actually is
When you buy a share of stock on margin, you borrow money from your broker to buy it. Futures are different. You don’t pay the full value of a futures contract, and you don’t borrow the rest. Instead, you post a deposit that both sides of the trade must keep in their accounts.
CME Group calls this deposit a performance bond. It describes performance bonds as deposits held to make sure obligations can be met, with requirements that vary by product and by how volatile the market is.
Because the deposit is a fraction of the contract’s full value, futures are leveraged. A small percentage move in the underlying commodity becomes a much larger percentage move in your account equity. That cuts both ways, and it’s the reason margin rules exist in the first place.
Initial margin vs maintenance margin
There are two levels to know.
- Initial margin is the amount you must deposit to open a position.
- Maintenance margin is the minimum equity you must keep in the account to hold that position open. It is usually set at or somewhat below the initial level.
Brokers can and often do require more than the exchange minimum. Your broker’s numbers are the ones that apply to you, so look them up on your broker’s margin page rather than the exchange’s.
Some brokers also offer a reduced intraday (day-trading) margin for positions opened and closed within the same session. It can be far lower than the exchange’s overnight requirement, which makes it tempting for beginners. Remember that the reduced rate only applies while the market is open and your broker allows it; if you hold the position past the broker’s cut-off time, the full overnight requirement applies and you may face an immediate call.
How futures margin changes every day
Futures accounts are marked to market. At the end of each trading day, gains on your position are credited to your account and losses are debited. That means your account equity moves daily with the price, not just when you close the trade.
This is what makes futures margin different from simply buying something and waiting. A position that ends up profitable can still trigger a margin call along the way if the price moves against you first. The CFTC’s Futures Market Basics page is a good primer on how this daily settlement works.
What triggers a margin call
If losses push your account equity below the maintenance margin level, you get a margin call. CME Group explains that a call must then be made to bring the account back up to the initial margin level, not just to maintenance.
That detail catches many beginners out. You don’t only top up the shortfall below maintenance. You top up all the way back to initial margin.
If you can’t or don’t meet the call in time, your broker can close part or all of your position, usually without asking you first, at whatever price the market offers. Brokers typically give a short window to deposit funds, and some will liquidate immediately in fast markets. The exact terms are in your account agreement, which is worth reading before you need it.
A worked example
The numbers below are illustrative only. Real margin levels change often, so always check your broker’s current requirements.
| Step | What happens | Account equity |
|---|---|---|
| 1 | You open one contract. Initial margin is $5,000; maintenance is $4,500. You deposit $5,000. | $5,000 |
| 2 | Day 1: the price moves against you, a $300 loss. | $4,700 (above maintenance, no call) |
| 3 | Day 2: another $400 loss. | $4,300 (below maintenance) |
| 4 | Margin call: you must restore equity to initial margin. | You deposit $700 to get back to $5,000 |
In this example, $700 of losses over two days required a $700 deposit. On a more volatile day, losses could exceed your entire deposit. CME Group’s own contract materials warn that with futures it is possible to lose more than you deposited.
Now extend the example. Suppose you had deposited $8,000 instead of exactly $5,000 to open the same contract. After the same two losing days, your equity would be $7,300, still comfortably above both maintenance and initial margin, and there would be no call at all. Nothing about the trade changed; only the cushion did. That is the single most practical lesson in this article.
Why futures margin requirements change
Exchanges and brokers raise margin requirements when markets become more volatile, sometimes with little notice. If you’re holding positions when that happens, you may need to deposit more money even though the price hasn’t moved against you.
Requirements also differ by contract. Smaller “micro” contracts carry lower dollar margin because they cover less of the commodity, but you still need to calculate exposure relative to your own account. Margin can also differ between the front-month contract and later-dated months, and between outright positions and spreads (a long in one month against a short in another), which exchanges often margin at a lower rate because the two legs partly offset.
Check the effective date on each exchange margin advisory; do not assume a fixed notice period. If you trade regularly, bookmark your exchange’s margin page and check it when volatility spikes.
Before you place a futures trade: a margin checklist
- Find the current initial and maintenance margin for the exact contract and month you intend to trade, on your broker’s site.
- Work out the contract’s full notional value (price multiplied by contract size) so you understand how much exposure the deposit controls.
- Calculate the dollar value of one point or one tick, then ask how many ticks the market has moved on its worst recent day. Use that as a historical scenario, not as a ceiling on future losses.
- Decide your cushion. How much equity above initial margin will you hold so a normal bad day doesn’t trigger a call?
- Know your broker’s call procedure: how they notify you, how long you have, and whether they auto-liquidate.
- Confirm whether you’re using intraday or overnight margin and when the broker’s cut-off is.
How to manage futures margin risk
- Keep extra cash in the account. Holding well above initial margin gives you room to absorb normal price swings without an immediate call.
- Size positions small. The fewer contracts you hold relative to your account, the less any single move can hurt you.
- Know your broker’s rules. Find out how and when they issue calls, how long you have to meet them, and when they liquidate.
- Watch for margin changes. Exchanges publish margin advisories. Your broker should notify you, but don’t rely on it.
- Use only money you can afford to lose. Leverage means losses can be fast and larger than you expect.
The CFTC’s educational material stresses that futures are volatile and complex and are not suitable for everyone. If you’re new to commodities, our guide to crude oil trading basics is a gentler starting point.
Common futures margin mistakes
- Treating margin as the price of the contract. The deposit is a fraction of what you control. Your risk is measured against the full contract value, not the deposit.
- Funding the account with exactly the initial margin. This leaves zero room for a normal down day and makes a call possible after even a modest adverse move.
- Relying on intraday margin and then holding overnight. The applicable requirement can change at the broker’s cut-off; confirm both figures in advance.
- Ignoring margin advisories. A margin increase during a volatile week can force you to add funds or reduce positions at the worst time.
- Meeting calls by wiring money repeatedly instead of reassessing the trade. If a position keeps generating calls, the position is too large for the account.
- Assuming the broker will phone you first. Many brokers liquidate automatically once equity falls below a set threshold.
Frequently asked questions
Is futures margin a loan?
No. Futures margin is a performance bond, a deposit held to help meet trading obligations. It does not cap losses or guarantee that your balance will cover them. You don’t pay interest on it as you would on a stock margin loan.
Can I lose more than my margin deposit?
Yes. If the market moves sharply against you, losses can exceed the money in your account, and you’ll owe the difference.
Who sets futures margin levels?
Exchanges set minimum requirements through their clearinghouses. Brokers can require more than the exchange minimum.
Does a margin call mean I’ve lost all my money?
No. It means your equity has dropped below the maintenance level and you must restore it to the initial level. You still hold the position, but daily settlement has already debited losses from your account; closing the position stops future exposure rather than reversing those debits.
The bottom line
Futures margin is a deposit, not a price, and the gap between initial and maintenance margin is the buffer that decides how much a market can move against you before your broker steps in. Know both numbers for the contract you trade, hold a real cushion above them, understand your broker’s liquidation rules, and treat repeated margin calls as a signal that your position is too big. Do that and margin becomes a tool for managing risk rather than the reason you were forced out of a trade.
Trading futures involves substantial risk of loss. Past performance does not guarantee future results. This article is for education only and is not financial advice.
