Leverage is the feature that makes forex and CFD trading accessible with a small account. It’s also the feature behind most blown accounts. The mechanics aren’t complicated, but they’re rarely explained before someone clicks “Buy”.
Leverage in one sentence
Leverage lets you control a position larger than the money you put up. With 1:30 leverage, $1,000 of your own funds can open a $30,000 position. Your broker isn’t giving you $29,000; it’s asking you to set aside a deposit — the margin — while you hold the trade.
Margin, equity and free margin
Platforms throw several numbers at you. These are the ones that matter:
- Balance — the cash in your account, ignoring open trades.
- Equity — balance plus or minus the profit or loss on open trades.
- Used margin — the money locked up to keep your positions open.
- Free margin — equity minus used margin; what’s left for new trades or to absorb losses.
- Margin level — equity ÷ used margin × 100%.
Margin level is the number your broker watches. When it falls to certain thresholds, things start happening automatically.
Margin call and stop out
A margin call is a warning: your margin level has dropped to a set point, often around 100%, and you can’t open new trades. Some brokers send an email, most just turn a number red.
A stop out is the action. If the margin level keeps falling to the stop out level — commonly somewhere between 20% and 50%, depending on the broker and the regulator — the platform starts closing your positions, usually the biggest loser first, until the margin level recovers.
A worked example
You have $2,000 and open one standard lot of EUR/USD (100,000 units) at 1:30 leverage. Used margin is about $3,600 at a price near 1.08 — which is more than your balance, so the trade won’t even open. Drop to 0.5 lots and used margin is about $1,800.
| Move against you | Loss | Equity | Margin level |
|---|---|---|---|
| 0 pips | $0 | $2,000 | 111% |
| 20 pips | $100 | $1,900 | 106% |
| 50 pips | $250 | $1,750 | 97% — margin call |
| 290 pips | $1,450 | $550 | 31% — near stop out |
A 50-pip move is an ordinary day for EUR/USD. The position was simply too big for the account. (Pip values are explained in what is a pip.)
Why regulators cap leverage
In the EU and UK, retail clients are limited to 1:30 on major currency pairs and lower on more volatile assets, with 1:2 on crypto CFDs where they’re allowed at all. US forex brokers are capped at 1:50 on majors. Regulators also require brokers to publish the share of retail accounts that lose money on CFDs, and those percentages are usually well above half.
A firm offering 1:500 or 1:1000 to anyone with an email address is operating outside those rules, which is one of the warning signs in our guide to fake brokers.
Keeping leverage on a short leash
- Size every trade from the stop loss: decide the dollar risk first, then the lot size.
- Keep margin level comfortably high — many experienced traders don’t let used margin exceed a small fraction of equity.
- Avoid big positions into scheduled news and the thin hours between trading sessions.
- Remember that negative balance protection, where it exists, limits losses to your deposit — it doesn’t stop you losing the deposit.
Leverage doesn’t change how often you’re right. It changes how much each mistake costs.
