5. What are Margins in Futures Trading?
In the world of futures trading, you don’t pay the full value of the contract upfront. Instead, you pay a margin—a percentage of the total contract value.
This margin acts as a security deposit to ensure you can cover potential losses. Think of it as a “good faith” deposit that allows you to trade high-value contracts with relatively small capital.
Why Are Margins Required?
- To open and maintain a position in futures
- To ensure both buyer and seller fulfil obligations
- To reduce default risk in a leveraged environment
- To handle daily price volatility via mark-to-market (MTM) adjustments
Margin = Leverage
The concept of margin enables leverage in futures. You control large positions with only a fraction of the total value.
Example:
- Nifty Futures Price = ₹22,000
- Lot Size = 50
- Total Contract Value = ₹22,000 × 50 = ₹11,00,000
- Required Margin = 10% → ₹1,10,000
You’re trading a contract worth ₹11 lakh by putting up just ₹1.1 lakh. That’s 10x leverage.
Mark-to-Market (MTM) Settlement
Futures contracts are settled daily using the MTM system. Every day:
- Closing price determines gain/loss
- Profit/Loss credited or debited from your margin balance
- Keeps your account aligned with market moves
If your margin falls below the threshold → Margin Call.
Types of Margins in Futures Trading
| Type | Purpose |
|---|---|
| Initial Margin | Minimum capital required to enter a position |
| Maintenance Margin | Minimum balance to keep position open |
| SPAN Margin | Risk-based system to handle worst-case scenarios |
| Exposure Margin | Additional buffer for extreme volatility |
| MTM Margin | Daily gain/loss adjustments |
Margin Impact: Profit & Loss
Suppose:
- Long futures at ₹22,000, lot size = 50
- Next day price rises to ₹22,300
Profit = ₹300 × 50 = ₹15,000 → Added to margin account via MTM
If price drops to ₹21,800: Loss = ₹200 × 50 = ₹10,000 → Deducted from margin account
If balance < maintenance margin → Margin Call or auto square-off.
Risk Warning
Trading on margin means:
- Higher returns when trade works
- Bigger losses when trade fails
Key Risks:
- Sudden market swings can wipe out margin
- You may lose more than your deposit
- Overnight volatility can trigger margin calls
Margin is Not a Fee
Margin is not a cost. It’s your money, returned after closing the position (adjusted for gains/losses).
Key Takeaways
- Margins enable leverage: control large trades with limited funds
- You must maintain a minimum balance during the trade
- Margins are adjusted daily via MTM
- They amplify both profits and losses
- Understanding margin mechanics is crucial before trading futures