Calculadora de Margem
Calcule a margem necessária para suas posições forex com base na alavancagem e tamanho da operação
Padrão: 100.000 | Mini: 10.000 | Micro: 1.000
A alavancagem oferecida pelo seu corretor
Understanding Margin in Forex Trading
Margin is the amount of money required in your trading account to open and maintain a leveraged position. It's not a cost or fee, but rather a portion of your account equity set aside as a deposit to cover potential losses. Think of margin as a good faith deposit that allows you to control a much larger position than your account balance would otherwise permit.
Leverage and margin are inversely related. Higher leverage means lower margin requirements, but also higher risk. For example, with 100:1 leverage, you only need $1,000 in margin to control a $100,000 position.
Margin Call: If your account equity falls below the required margin level, your broker will issue a margin call, requiring you to deposit more funds or close positions.
How Margin Calculation Works
The Margin Formula
Required Margin = (Lot Size × Contract Size × Exchange Rate) ÷ Leverage
Example:
Lot Size: 1.0 (standard lot)
Contract Size: 100,000 units
Exchange Rate: 1.1000 (EUR/USD)
Leverage: 100:1
Position Value = 1.0 × 100,000 × 1.1000 = $110,000
Required Margin = $110,000 ÷ 100 = $1,100
Margin vs Free Margin vs Margin Level
- Used Margin: The amount currently locked up in open positions
- Free Margin: The amount available to open new positions (Equity - Used Margin)
- Margin Level: (Equity ÷ Used Margin) × 100. Most brokers require 100% minimum
Frequently Asked Questions
What happens if I don't have enough margin?
If you don't have sufficient margin to open a new position, your broker will reject the trade. If your existing positions move against you and your margin level falls below the broker's maintenance requirement, you'll receive a margin call. If you don't add funds or close positions, the broker will automatically close your positions.
Is higher leverage always better?
No. While higher leverage reduces margin requirements and allows you to control larger positions with less capital, it also increases risk significantly. A small adverse price movement can wipe out your account with high leverage.
Can I lose more money than I deposit?
With most retail forex brokers, no—they offer negative balance protection. However, in extreme market conditions, it's theoretically possible to lose more than your deposit before the broker can close your positions.
How much margin should I keep free?
It's recommended to keep your margin usage below 50% of your account equity. This provides a buffer against market volatility and prevents margin calls. Professional traders often use only 10-20% of their available margin.
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