Direct answer: what free margin means in forex
Free margin in forex is the portion of your account equity that is not tied up as margin for your currently open positions. It is commonly used as a measure of how much buffer you have before your positions create higher margin pressure.
In plain terms: if you already used part of your account equity to support open trades (margin), the remaining equity is your free margin. Floating profit and floating loss from open positions affect equity, so free margin can change as prices move.
How free margin works in practice
To understand free margin, it helps to know the related building blocks:
- Equity: what your account is worth right now, including the effect of floating profit/loss from open trades.
- Used margin (margin required): the amount of equity reserved to keep open positions active under leverage rules.
- Free margin: equity minus used margin.
When the market moves, two things typically happen:
- Floating profit or floating loss changes equity.
- The used margin stays linked to the position sizing and contract requirements, so the difference (free margin) changes mainly because equity changes.
Because leverage amplifies exposure, small price movements can noticeably change floating results, which can quickly increase or decrease free margin.
Example checks and what to verify
Here is a simple way to sanity-check the concept without relying on any specific platform:
- If you increase equity (for example, by reducing exposure or realizing gains) while used margin stays the same, free margin should increase.
- If a position goes into floating loss, equity falls; free margin should therefore fall.
- If you open a larger position (higher used margin) without an immediate equity increase, free margin should decrease.
Two practical verification points:
- Look at your platform’s equity, used margin, and free margin fields and ensure they update consistently with price changes.
- Check your account’s margin calculation and margin trigger rules, because brokers and account types can differ in exact formulas and thresholds.
Relevant limitations and risks
Free margin is not a promise of safety. It is a snapshot of your buffer relative to margin requirements.
Key limitations:
- Free margin depends on floating profit/loss, so it can change quickly with market prices.
- Margin-related actions (such as margin calls or forced position reductions) depend on specific broker rules and account settings, which can vary.
- Free margin does not predict future outcomes; it only reflects current relationships between equity and margin.
If you are comparing accounts or providers, verify the exact definitions and thresholds used for free margin and margin level, rather than assuming all platforms calculate them identically.