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Margin for selling NIFTY options

Selling an option needs margin; buying one does not. A buyer can lose only the premium paid, so the premium is all they put up. A seller’s loss has no fixed limit, so the exchange charges SPAN on the sold option, adds its current value, and adds exposure margin on the underlying’s value.

Open in calculator All margins

Margin for this trade

Margin data as of (NSE file)

Expiry

  • Sell 1 ATM call NSE F&O file of 30 Oct 2026
    • Sell NIFTY 23,050 CE, 1 lot (65 units)
    SPAN
    ₹1,29,375
    Exposure
    ₹29,969
    Option value
    ₹6,754
    Premium
    ₹0
    Stocks, minimums and 5% buffer
    ₹8,305
    Total
    ₹1,74,403
  • Hedged with a call 6 strikes up NSE F&O file of 30 Oct 2026
    • Sell NIFTY 23,050 CE, 1 lot (65 units)
    • Buy NIFTY 23,350 CE, 1 lot (65 units)
    SPAN
    ₹12,280
    Exposure
    ₹29,969
    Option value
    ₹5,619
    Premium
    ₹1,134
    Stocks, minimums and 5% buffer
    ₹2,393
    Total
    ₹51,396

≈ approximate Per basket, at the exchange’s reference prices, on the nearest expiry all legs share. Option value is the value of sold options less the credit for bought ones. The 5% buffer rounds the estimate up.

Hedged with a call 6 strikes up needs ₹1,23,007 less.

Worked out from the margin files NSE, BSE and MCX publish each day (SPAN, VaR and exposure rates), then rounded up by 5% to stay on the safe side. Your broker can ask for more: ad hoc or delivery margins, its own intraday leverage, or a higher figure during peak-margin checks. Use it to plan a trade, and check the order window before you place it.

How this margin works

That is why a single sold NIFTY option needs far more money than buying one. A common way to bring it down is to buy a further out-of-the-money option on the same side. The pair is a spread: the bought option caps the loss, and SPAN falls to a fraction of the naked figure. You pay the bought option’s premium.

On the expiry day of the option, SEBI’s 2024 rules add an extra exposure margin on short positions in contracts expiring that day, so the same position can need more on expiry day than the day before. The table uses the nearest expiry and the strike closest to the money in the latest file.

The figures follow the calculator’s method: SPAN and exposure from the clearing corporation’s files, option value and premium, and a 5% buffer.

Selling a NIFTY call questions

Why does selling an option need much more margin than buying it?

A buyer can lose at most the premium, which is paid upfront. A seller can lose much more if the market moves against them, so the exchange blocks SPAN plus exposure margin and the option’s current value.

How can I reduce the margin for option selling?

Buy a further out-of-the-money option on the same side to make a spread. The loss is then capped, and the margin drops sharply; the comparison row shows by how much, as of the file date on this page.

Sources

Figures updated . Method and text reviewed by the Cirrus team on .

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