Options calculator for Indian index options
Premium, break-even, max loss, daily time decay and every charge on the trade, in rupees and per lot. It uses only the numbers you enter.
Start values are round, illustrative numbers, not market prices. Enter the figures from your own broker's option chain.
Profit and loss at expiry
For index levels 8% either side of the strike, before charges.
Charges for opening and closing
Two orders at a ₹20 flat-fee broker, closing at the same premium. Charges on a losing trade are paid too.
- Brokerage
- ₹40.00
- STT (0.15% on sell)
- ₹20.40
- Exchange charges
- ₹9.66
- SEBI fee
- ₹0.03
- Stamp duty (buy)
- ₹0.41
- GST (18%)
- ₹8.94
Total: ₹79.44
As of 2026-11-02. Source: NSE circular NSE/FAOP/70616 and BSE notices
As of 2026-11-02. Source: NSE circular NSE/FA/73061 and Zerodha STT note
How to read the result
The premium is a theoretical Black–Scholes value. The price on your broker's option chain will differ: it reflects supply and demand, the bid–ask spread and the volatility the market expects. Use the calculator to understand how the parts fit together, not to predict a price.
Index options in India are European-style and cash-settled: they can only be exercised at expiry, and you receive or pay the difference in cash. Option sellers need margin of a different order from the premium; check your broker's margin calculator before selling.