Leverage is the most advertised number in forex and the least understood. Brokers wave 1:500 around as if it were a feature you should use to the limit, while regulators cap retail leverage at 1:30 as if it were poison. Both miss the point: leverage sets the deposit, but your position size sets the risk — and those are two different things entirely.
Margin is not a fee. It is a deposit held aside while a position is open — a performance bond, returned to your equity when the trade closes. Open a $100,000 position (one standard lot) at 1:30 leverage and the broker sets aside about $3,334 of your equity. At 1:100 it is $1,000. At 1:500 it is $200.
Notice what did not change: the position is $100,000 in every case. The pip values are identical. A 20-pip move against you costs $200 in all three rows of this table:
| Leverage on a $100,000 position | Margin held | Loss on a 20-pip stop |
|---|---|---|
| 1:30 | $3,334 | $200 |
| 1:100 | $1,000 | $200 |
| 1:500 | $200 | $200 |
The only thing high leverage changed is how little money the broker must hold hostage. Your risk was decided the moment you chose the lot size.
The confusion is understandable, because leverage can enable oversized positions. With only $200 of margin required, a $2,000 account can hold that full standard lot — 50 times the account. At that point the 20-pip stop is 10% of the account in one trade, and the leverage number gets the blame that the position choice deserves. The leverage made it possible; the sizing made it dangerous.
The broker sets the maximum. The position size sets the reality.
Once a position is open, the broker watches one ratio: margin level = equity ÷ used margin × 100. It falls as losses eat your equity. Two thresholds matter:
A margin call is not bad luck. It is arithmetic telling you the position was too large for the account, a message that would have arrived as a normal stop-loss if the trade had been sized honestly.
Professionals do not ask "how much leverage can I get?" — they ask "how much of my account is actually committed?" A useful rule: keep used margin under about 10–20% of equity across all open trades. That leaves room for drawdowns, swap charges and the occasional gap without ever meeting the stop-out math.
When comparing a new trade, the question is never just leverage. It is the pair of numbers together: what the position risks (in pips × pip value) and what it holds (margin). The margin calculator computes the deposit for any lot size and leverage, and the position size calculator keeps the risk side honest. High leverage is a tool for capital efficiency — a way to run sensible positions without tying up the whole account. Used that way, 1:100 is safe and 1:30 is tight. Used carelessly, they are both lethal, and no number in the marketing saved anyone.
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