The common formula is simple: margin level = equity / used margin x 100. If equity is $24,800 and used margin is $6,200, margin level is 400%. As equity falls or used margin rises, margin level drops.
The MT5 margin terms
| Term | Meaning |
|---|---|
| Equity | Balance plus floating profit and loss. |
| Used margin | Collateral required by current open positions. |
| Free margin | Equity minus used margin. |
| Margin level | Equity divided by used margin, shown as a percentage. |
Why margin level matters
Margin level is a pressure gauge. A falling margin level means the account has less room to absorb open-position movement. For EAs that add positions, hedge, grid or recover, this number can change quickly.
Prop firm accounts may focus more on drawdown than margin, but margin level still matters because low margin can force broker-side risk events before a trader has time to respond.
Alert thresholds
There is no universal safe margin level because brokers, leverage and strategies differ. The useful pattern is staged alerts. A high-level warning gives context. A lower threshold becomes urgent. A critical threshold means the trader should inspect the account immediately.
Monitor margin with equity and drawdown
Margin level alone does not explain the whole account. Combine it with equity drawdown, open P/L, exposure by symbol and terminal heartbeat. For the full account model, read How to monitor MT5 accounts.
Read the formula in context
Margin level is generally equity divided by used margin, multiplied by 100. If equity is $8,000 and used margin is $2,000, the margin level is 400%. If open losses reduce equity to $6,000 while used margin stays constant, it falls to 300%. The number moves with both market P/L and position changes.
A high percentage is not a universal safety guarantee. Broker margin-call and stop-out thresholds vary by account and can be expressed differently. Hedged positions, symbol margin rules and leverage also affect used margin. Read the actual account properties and broker terms instead of copying a threshold from another trader.
Worked stress scenario
An account has $10,000 equity and $2,500 used margin, so its margin level is 400%. It adds exposure that raises used margin to $4,000; before price moves, the level is already 250%. A $1,500 floating loss then reduces equity to $8,500, producing 212.5%. This shows why monitoring only drawdown misses a capacity problem: position size changed the denominator.
Monitor direction, threshold and cause
- Track equity, used margin, free margin and margin level together.
- Alert before the broker boundary, leaving room for fast markets and slippage.
- Record whether a fall came from new exposure, open loss or a broker parameter change.
- Use persistence or hysteresis to avoid repeated alerts around one threshold.
- Test the policy on the exact account type used in production.
Margin level is a live operational signal, not a substitute for position-level stop risk or total drawdown. Combine it with the drawdown calculation guide and risk-alert design. When margin state cannot be read, fail closed for new exposure and surface the missing data rather than displaying a reassuring default.
Calibrate alerts on the real account
Record the broker-reported margin call and stop-out properties where available, but keep the internal operating threshold comfortably above them. The buffer must reflect how quickly the strategy can add exposure, how volatile its symbols are and whether positions can be closed reliably during stressed markets. A threshold copied from a different leverage or account mode is not evidence.
Test the monitor with controlled position sizes and confirm the displayed equity, margin and free margin match MT5. Watch what happens when orders are pending, positions are hedged, the market closes or a symbol uses unusual contract specifications. Alert on rapid deterioration as well as a fixed level: a fast move from 800% to 350% may deserve attention even if the static warning is lower.
Primary source
Technical reference: official MetaTrader documentation. Broker and prop-firm terms can differ; verify the rules for the exact account you operate.
xTriel keeps margin, equity and heartbeat visible in one MT5 dashboard.