Margin Premium credit Margin

Use option premium received as margin

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When you sell an option (Option premium credit on Kite funds ), the premium received is credited to your account as cash. This credit counts as cash-equivalent for margin purposes, including the 50:50 cash collateral rule .

How it works

Example: Sell 1 NIFTY 22000 CE at Rs 100 premium.

  • Lot size 50 → premium received = Rs 5,000.
  • Cash credited: Rs 5,000.
  • SPAN + Exposure margin for short call: ~Rs 1,30,000.
  • Net new funds required: Rs 1,30,000 - Rs 5,000 = Rs 1,25,000.

The premium effectively reduces the new capital needed.

Counts as cash component

For the 50:50 cash collateral rule, premium credit counts as cash. For a trader running multiple short options:

  • Total premium received: Rs 50,000 (across positions).
  • Total F&O margin requirement: Rs 5 lakh.
  • Cash component required: Rs 2.5 lakh.
  • Premium contribution to cash: Rs 50,000.
  • Additional cash needed: Rs 2 lakh.

Practical use

Active option sellers can structure their portfolios to maximise premium-driven margin coverage:

  • Sell premium-rich short options.
  • Use the premium credit to fund margin for other positions.
  • Pledge equity for the non-cash component.

This is a standard option-selling capital structure.

Limitations

  • Premium is at risk. If the option goes ITM and you have to buy back at higher price, you lose the premium plus more.
  • Buy-back debits cash. When closing the short, premium debit reduces the credit.
  • Cash credit only counts while position is open. Closing the position uses up the credit.

Effect on margin available

Once you sell to open:

  • Margin used: +SPAN + Exposure for the position.
  • Cash: +premium received.
  • Net margin available change: -(SPAN + Exposure - premium).

For deep ITM options (high premium), the net new capital is much lower than for OTM short options.

See also

External references

References

  1. SEBI, Premium credit treatment for F&O margin, sebi.gov.in.
  2. Zerodha, Option premium and margin, support.zerodha.com.
  3. NSE Clearing, Margin calculation methodology, nseclearing.com.

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