Leverage

Leverage is the use of borrowed capital — broker margin — to control a notional position larger than the equity in your account, quoted as a ratio like 30:1. At 30:1, every $1,000 of your own money commands $30,000 of market exposure. The broker fronts the rest and holds a slice of your balance as collateral. Leverage does not create profit or loss on its own; it scales whatever the market hands you, in both directions.

How it's calculated

Leverage is simply the size of your position measured against the money backing it.

Say you hold $50,000 in EUR/USD on a $5,000 account. Your leverage is $50,000 ÷ $5,000 = 10:1, and the broker locks up 10% of the notional — $5,000 — as margin. Now watch what a 1% move does. On the $50,000 position, a 1% adverse move is a $500 loss. Against your $5,000 equity, that is a 10% drawdown from a market move most traders would call routine. Push the same account to 30:1 and that identical 1% move wipes out 30% of your capital. The exposure moved the same amount; the leverage decided how much it cost you.

Why it matters

The number that actually governs your risk is not the leverage your broker offers — it's the leverage you deploy. Available leverage is a ceiling: 30:1 or 500:1 is just the maximum position the broker will let you open. Used (effective) leverage is your live exposure divided by your equity right now. You can hold a 500:1 account and run it at 2:1 all day. You can also hold a 30:1 account and, by opening the biggest position the margin allows, run it at the full 30:1 with no buffer left.

High effective leverage is what drives risk of ruin. When your used leverage climbs, the market move required to blow through your account shrinks toward zero. At 100:1 used leverage, a 1% move against you erases your equity entirely — and a 1% move is nothing. A short losing streak that a lightly-leveraged account would shrug off becomes terminal.

This is the distinction that trips up newer traders: leverage is not the same as risk. Risk is set by your stop distance and your position sizing — how much you actually lose if the trade goes wrong. Leverage only determines how large a position a given deposit can support. You can trade a highly leveraged account with tiny risk by keeping positions small and stops tight, or torch a low-leverage account by risking everything on one trade. Leverage is the capacity; your sizing decides how much of it you draw on.

Related concepts

Leverage and margin are two views of the same mechanism — the ratio versus the collateral it demands. To translate a price move into account currency, you need the value of each pip for your position size. Before you open anything, run the numbers through the position size calculator so your used leverage is a decision rather than an accident. And once you're live, the Tradeways journal logs the effective leverage on every trade, so you can see whether your edge comes from good calls or just from oversized positions waiting to unwind.