Free margin

In practice

If your equity is $10,300 and your open trades use $4,000 of margin, your free margin is $6,300. That is the amount available to open new trades and the cushion that protects existing ones from a margin call if the market moves against you.

Why it matters for traders

Free margin is your room to survive and your room to act. Trade it away by over-loading positions and a single adverse move triggers a margin call; keep it healthy and your trades have space to breathe through normal volatility. It is the number that tells you whether you are trading safely or gambling with the buffer.

Common pitfall

The error is reading a healthy free-margin number and immediately using it to open more positions, leaving no buffer. Correlated positions can consume all of it in one move. Free margin is not spare cash to spend — it is the cushion that lets existing trades survive volatility. Cap your used margin at a fraction of equity, and treat the remainder as insurance, not as room to add risk.

Putting it in context

Cost and leverage terms like this one matter more to your long-term results than most entries or indicators ever will. Two traders taking identical trades can end the year with very different accounts purely because of spread, swap, commission, and position size. The habit to build is computing the full cost of a trade before entering it — not just the stop-loss distance, but every charge the broker applies between open and close. On a demo account these costs feel invisible; on a live account, over hundreds of trades, they decide whether an otherwise sound strategy is profitable. Revisit your broker's actual charges every few months, because advertised headline figures rarely reflect what an average retail trade really pays.

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