I have computed the NSE transaction costs, STT, brokerage, Stamp duty, Service Tax to about 0.10%, but I don't know about the slippage and bid/ask spread for index options. What number should you choose for a break even point. Image if I start trading with Rs 10,00,000
Slippage can't have fixed value, it depends on current bid/spread.Generally, it is added as half of spread.