What is the difference between leverage and margin?

Leverage is the ratio that describes how large a position you can control relative to your deposit, such as 30:1. Margin is the actual amount of money set aside from your account to open and maintain that leveraged position. Higher leverage means a lower margin requirement for the same position size.

Is high leverage dangerous?

High leverage increases both potential gains and potential losses relative to your account balance. A relatively small adverse price movement can produce a loss representing a large percentage of your capital, which is why many regulators cap the maximum leverage available to retail traders.

What happens if I run out of margin?

If losses on open positions reduce your account equity below a broker's required maintenance margin level, you may receive a margin call asking you to deposit more funds or reduce positions. If equity falls further, the broker's automated stop-out system will typically begin closing positions to prevent the account from going into a negative balance.

Can I lose more money than I deposit when using leverage?

In principle, yes, particularly during fast-moving markets where slippage prevents timely order execution. However, in jurisdictions that require negative balance protection, such as under FCA, ASIC and CySEC retail rules, brokers must reset a client's account balance to zero rather than pursue the client for additional losses.

Understanding Leverage and Margin (and the Danger)

FinPip Editorial Team · July 8, 2026

Illustration of a lever amplifying a small deposit into a much larger trading position

What Is Leverage?

Leverage lets you control a trading position that is larger than your account balance alone would allow, by borrowing the difference from your broker. It’s expressed as a ratio, such as 30:1, meaning you can control $30,000 of exposure for every $1,000 of your own capital.

Leverage doesn’t change how much profit or loss a given price movement produces in absolute dollar terms — it changes how much of your own capital you needed to put up to access that position size. This distinction is central to understanding both the appeal and the danger of leveraged trading.

What Is Margin?

Margin is the amount of money your broker sets aside from your account balance to open and maintain a leveraged position. It is not a fee or a cost — it’s collateral that remains yours, but is temporarily “locked” while the position is open.

Initial margin — the amount required to open a new position.
Maintenance margin — the minimum equity level required to keep an existing position open.
Free margin — the portion of your account balance not tied up in margin, available to open new positions or absorb losses.

The relationship between leverage and margin is direct: Margin required = Position value ÷ Leverage ratio.

Worked Example: How Leverage Determines Margin

Suppose you want to open a position worth $50,000 (equivalent to 0.5 standard lots on a typical forex pair).

Leverage	Margin required
10:1	$50,000 ÷ 10 = $5,000
30:1	$50,000 ÷ 30 = $1,667
100:1	$50,000 ÷ 100 = $500
500:1	$50,000 ÷ 500 = $100

Notice that in every case, the position size stays the same ($50,000), and so does the dollar profit or loss for any given price movement. Only the amount of your own money required as margin changes. This is the key point many beginners miss: higher leverage doesn’t make a trade “bigger” in terms of risk on the position itself — it makes the same-sized position accessible with less upfront capital, which often tempts traders into opening larger positions than they should relative to their account.

Worked Example: How Leverage Magnifies Account-Level Risk

This is where leverage becomes dangerous — not because of the mechanism itself, but because of how it’s typically used in practice.

Account balance: $1,000 Leverage available: 100:1 Maximum position size accessible: $100,000 (using all margin)

If the trader opens a $100,000 position and the price moves against them by just 1%, the loss is $1,000 — the trader’s entire account. A 1% adverse move is common in a single trading session for many instruments.

Compare this to a trader with the same $1,000 account who uses position sizing principles instead of maximum leverage, risking only 1% ($10) per trade with an appropriately sized position and a stop-loss. That trader could withstand more than 90 consecutive losing trades before running out of capital, versus a single bad move wiping out the highly leveraged account.

The leverage ratio offered by a broker is a ceiling on what’s possible, not a target for what you should use on every trade.

Margin Calls and Stop-Outs

If losing positions reduce your account equity below the required maintenance margin level, most brokers issue a margin call — a notification that you need to deposit more funds or close positions to reduce required margin. If equity continues to fall and reaches a broker’s stop-out level, the broker’s system will typically begin automatically closing positions, starting with the largest losing ones, to prevent the account from being overdrawn.

For a full walkthrough of this process and how to avoid it, see What Is a Margin Call and How to Avoid One.

Regulatory Leverage Caps

Because of the risks illustrated above, several major regulators impose maximum leverage limits for retail clients. For example, ESMA rules (which EU regulators including CySEC follow) and the UK’s FCA cap retail forex leverage at 30:1 for major currency pairs, with lower caps for minor pairs, indices and individual shares. ASIC in Australia applies similar retail limits. These caps exist specifically because regulators observed that very high leverage was associated with disproportionate retail losses. Offshore brokers outside these jurisdictions sometimes advertise much higher leverage (500:1 or more), which increases theoretical risk correspondingly — see Regulated vs. Offshore Brokers: The Real Risks for more on this trade-off.

Negative Balance Protection

In fast-moving markets, particularly during major news events or “flash” moves, prices can gap past a stop-loss level before an order can be filled, in principle producing a loss larger than the account balance. Negative balance protection is a broker guarantee — required by regulators including the FCA, CySEC and ASIC for retail clients — that resets a client’s balance to zero rather than leaving them owing money to the broker. Always confirm this protection is in place before trading with leverage, particularly with brokers regulated outside these major jurisdictions.

How to Use Leverage Responsibly

Treat the leverage ratio as a ceiling, not a target. Just because 30:1 or 100:1 is available doesn’t mean a position should use it fully.
Size positions based on risk, not available margin. Use the position sizing formula to determine trade size from your risk-per-trade rule and stop distance — check afterward that sufficient margin is available, rather than using margin availability to decide size.
Monitor free margin and margin level, not just account balance. A healthy account balance can still be at serious risk if most of it is tied up as margin across multiple open positions.
Confirm negative balance protection with your broker. This is especially important when trading with higher leverage.

Key Takeaways

Leverage lets you control a larger position with a smaller deposit; margin is the actual collateral set aside to support that position.
Higher leverage reduces the margin required for a given position size — it does not reduce the actual dollar risk of that position.
A small adverse price move on a highly leveraged, maximally sized position can wipe out an account far faster than the same move on a properly sized position.
Major regulators (FCA, ESMA/CySEC, ASIC) cap retail leverage specifically because of this outsized risk; offshore brokers may offer much higher, unregulated leverage.
Negative balance protection, where regulated, prevents a client from owing the broker money after an extreme loss.

Risk note: Leveraged trading carries a high level of risk and can result in losses that exceed your initial deposit where negative balance protection does not apply. The vast majority of retail leveraged trading accounts lose money over time, according to disclosures published by regulated brokers. Only trade with capital you can afford to lose, and confirm your broker’s regulatory status and leverage limits before depositing funds.

Frequently asked questions

What is the difference between leverage and margin?: Leverage is the ratio that describes how large a position you can control relative to your deposit, such as 30:1. Margin is the actual amount of money set aside from your account to open and maintain that leveraged position. Higher leverage means a lower margin requirement for the same position size.
Is high leverage dangerous?: High leverage increases both potential gains and potential losses relative to your account balance. A relatively small adverse price movement can produce a loss representing a large percentage of your capital, which is why many regulators cap the maximum leverage available to retail traders.
What happens if I run out of margin?: If losses on open positions reduce your account equity below a broker's required maintenance margin level, you may receive a margin call asking you to deposit more funds or reduce positions. If equity falls further, the broker's automated stop-out system will typically begin closing positions to prevent the account from going into a negative balance.
Can I lose more money than I deposit when using leverage?: In principle, yes, particularly during fast-moving markets where slippage prevents timely order execution. However, in jurisdictions that require negative balance protection, such as under FCA, ASIC and CySEC retail rules, brokers must reset a client's account balance to zero rather than pursue the client for additional losses.