What it is — Margin in Forex
Margin is the deposit your broker sets aside as collateral when you open a leveraged position. It is not a fee, not a cost, and not your maximum loss — you get it back when the trade closes.
The formula is simple: margin = position notional ÷ leverage. What makes margin dangerous is its sibling: margin level — equity ÷ used margin. When floating losses push margin level down to the broker's stop-out threshold (often 20–50%), positions are force-closed, biggest loser first.
Why it matters — Margin in Forex
- It decides whether a trade can even be opened — blocked orders are usually margin, not price.
- It defines your survival buffer: high margin use = small adverse move from stop-out.
- Margin calls are warnings, not fees: the platform alerting you that equity is approaching the danger zone.
Margin in one worked example
Open 0.1 lots of EURUSD (10,000 units) at 1.12294: notional value $11,229.40. At 1:30 leverage the broker locks $374.31 of your equity as margin; at 1:500 it locks $22.46. Your free margin is equity minus locked margin — the buffer a losing position can eat before trouble. Note the asymmetry: the 1:500 trade locks less than a coffee, but it loses the same $1 per pip. Margin is not a fee and it is not a risk number; it is a deposit that determines how far price can move against you before the broker intervenes.
Margin level and the margin callmargin call, in plain numbers
Brokers watch one ratio: margin level = equity ÷ used margin × 100. Example: $1,000 equity, $374.31 used → level 267%. Comfortable. If losses drag equity to $150 on that same used margin, the level falls to 40%; most brokers start warning below 100% and force-close positions (stop-out) somewhere around 20–50%, closing the biggest loser first. That forced exit, at the worst possible moment, is the margin call in practice. The defense is boring: size positions so used margin stays a small fraction of equity — under ~10–20% for single positions.
How much margin do I need?
Margin = position notional ÷ leverage. One standard lot of EURUSD (about $100,000 notional) at 1:100 locks roughly $1,000. The margin calculator shows the exact figure for any pair, lot size and leverage before you open.
What is free margin?
Free margin is equity minus used margin — the room you have left for new positions and for open positions to move against you. When free margin hits zero, the broker stops being polite.
What is a margin call (and a stop-out)?
A margin call is the warning that your free margin has fallen to a set level; a stop-out is the automatic closing of positions when it falls further. Both are consequences of size, not of the market — the same move is uneventful on a smaller position. Keeping risk per trade small keeps margin news boring. See leverage.
Margin vs leverage — what is the relationship?
Leverage sets how much exposure a unit of margin controls; margin is what gets locked. Higher leverage means less margin per lot — and less distance before a margin call. The convenient setting is the dangerous one.
Frequently asked questions — Margin in Forex
Do you get margin back after a trade?
Yes. Margin is collateral, released the moment the position closes. What you keep or lose is the price movement, plus spread, commission and swap.
What happens if my margin level hits the stop-out level?
The broker force-closes your largest losing position(s) at market until the level recovers. You realize the loss and often at a poor price — which is why margin calls are avoided by sizing, not by hoping.
Does higher leverage make trading riskier?
Not by itself — it lowers the margin a position needs. Risk comes from lot size and stop distance. The real danger of high leverage is that it makes dangerous sizes easy to open.
What is a margin call vs stop-out?
A margin call is the warning notification as margin level falls toward the danger zone. Stop-out is the automatic force-close of positions at the broker's threshold (commonly 20–50% margin level).
What is margin in forex
Margin is the deposit your broker locks while a leveraged trade is open — it is not a fee. Opening one standard lot of EURUSD with 1:100 leverage locks roughly $1,000 of margin; the rest of the position is borrowed exposure.