Forex Margin Calculator
Calculate the exact initial margin deposit your broker locks to open a trade. Compare requirements from 1:1 up to 1:3000 leverage with institutional margin warnings.
Trade Parameters
Input parameters to compute exact risk and positioning
Calculation Results
Institutional risk output
What is Margin in Forex Trading?
Margin is not a transaction fee or cost; it is a good-faith financial collateral deposit held by your broker while a leveraged position remains open. Once the position is closed, the held margin is unlocked and credited back to your usable account equity.
Warning: High leverage can significantly increase trading risk. While high leverage decreases the required margin to open a position, it amplifies both profits and losses equally, leaving minimal buffer against adverse price spikes.
How Does It Work?
Margin equals the total notional value of your trade (Lots * 100,000 units * base currency price) divided by your leverage ratio. For example, at 1:100 leverage, your required margin is exactly 1.0% of the position notional value. At 1:500 leverage, it is 0.20%.
Mathematical Formula
Worked Numerical Example
Example: Trading 1.0 Standard Lot of EUR/USD with 1:100 Leverage
- Position Size: 100,000 EUR
- Notional Value: ~$100,000 USD (at approximate parity)
- Leverage: 1:100 (1.0% margin requirement)
- Required Margin: $100,000 / 100 = $1,000.00 USD
Common Mistakes Traders Make
- Assuming lower margin equals lower risk. Using maximum leverage to open oversized positions leads to swift margin liquidation.
- Ignoring broker margin call and stop-out thresholds (typically 50% or 100% margin level).
Professional Risk Management Advice
Maintain a Margin Level (Equity / Used Margin * 100%) well above 500%. If your margin level drops near 100%, you are in acute danger of automatic broker stop-outs during high-volatility news events.
Frequently Asked Questions
What is the difference between Required Margin and Free Margin?
Required Margin is the money currently locked to keep open positions active. Free Margin is your remaining equity minus required margin (Equity - Used Margin) available to open new trades or absorb drawdowns.
What is a Margin Call?
A Margin Call is an alert from your broker indicating that your account equity has fallen below the required margin threshold. If equity continues to drop to the stop-out level, the broker will automatically close trades to prevent negative balance.