Leverage and margin explained, without the jargon

Leverage is the most misunderstood idea in retail forex. It's often sold as a feature ("trade with 1:500!") and blamed as the reason people lose money. Neither is quite right. Leverage decides how big a position you're allowed to open. Your position size and stop loss decide how much you can lose.

What leverage is

Leverage lets you control a position that's larger than the money in your account. At 1:100 leverage, every $1 in your account can support $100 of position.

One standard lot of EUR/USD is 100,000 euros. At a price of 1.0800, that position is worth about $108,000. You obviously don't need $108,000 to open it. You need the margin.

What margin is

Margin is the part of your balance the broker sets aside while a trade is open, as a deposit against losses. It's the position value divided by the leverage:

• At 1:30: $108,000 ÷ 30 = $3,600 of margin for one standard lot.
• At 1:100: $1,080.
• At 1:500: $216.

Margin isn't a fee. You get it back when the trade closes, plus or minus your profit or loss.

Equity, free margin and margin level

Your platform shows a few numbers that matter once you have open trades:

• Equity: your balance plus or minus the profit or loss on open trades.
• Used margin: the total set aside for open trades.
• Free margin: equity minus used margin. It's what's left to open new trades or absorb losses.
• Margin level: equity ÷ used margin × 100%.

Margin calls and stop-outs

If your trades lose enough that your margin level falls to the broker's margin call level, often 100%, you get a warning and usually can't open new trades. If it keeps falling to the stop-out level, often 50% or lower, the broker starts closing your positions, largest loss first, to protect itself and you.

A stop-out is the worst way to close a trade. It happens at a price you didn't choose, usually after a much larger loss than you planned. If you size trades properly and always use a stop loss, you should never get close to it.

Why leverage doesn't set your risk

Take two traders, each with $5,000. Both buy 0.20 lots of EUR/USD with a 25-pip stop loss. One account has 1:30 leverage, the other 1:500.

If the stop is hit, both lose exactly the same amount: 25 pips × $2 per pip = $50, or 1% of the account. The only difference is how much margin is set aside while the trade is open.

Where high leverage hurts is that it lets you open positions that are far too big. With 1:500, a $5,000 account could open more than 20 standard lots of EUR/USD. A 25-pip move against that position would cost over $5,000. Low leverage limits how big a mistake you can make. It doesn't make a well-sized trade any safer.

Leverage limits by country

Many regulators cap the leverage that retail clients can use:

• UK, EU and Australia: 1:30 on major currency pairs, 1:20 on other pairs and gold, and lower on other assets.
• United States: 1:50 on major pairs and 1:20 on others.
• Canada: limits are set through the margin rules of CIRO and its member dealers, and they vary by product.

Offshore brokers often offer 1:500 or more. That isn't a benefit you need. It mainly means fewer rules about how you're treated.

A simple way to think about it

1. Decide your risk per trade, for example 1% of your balance.
2. Put your stop loss where the trade idea is wrong.
3. Calculate the lot size that loses exactly that 1% if the stop is hit, using the position size calculator.
4. Check that the margin needed is a small part of your free margin, so you have room for other trades and for price swings.

Do that on every trade and leverage becomes a background setting, not a danger.

Risk note: trading forex carries a high level of risk and may not be suitable for everyone. This article is for education only and is not financial advice.