Options Brokerage Calculator
Calculate options brokerage at flat ₹10 per lot, STT on premium, exchange txn, GST & stamp duty and your net P&L for NSE F&O options trading with ATS.
Enter buy price and number of lots to see your brokerage and charges. Add a sell price for net P&L and breakeven.
About the Options Brokerage Calculator
Options are priced on premium, and ATS charges a simple ₹10 brokerage per lot. STT applies at 0.05% on the sell-side premium, and exchange transaction charges are 0.053% of the premium turnover — these usually dominate options costs.
Enter your buy and sell premium, the number of lots and your contract lot size. The calculator totals brokerage, STT, exchange charges, 18% GST, the SEBI fee and stamp duty, then shows net P&L and breakeven on the premium.
Frequently Asked Questions
How is options brokerage charged at ATS?
ATS charges a flat ₹10 brokerage per lot on equity options. The calculator multiplies ₹10 by the number of lots for each leg (buy and sell).
What is STT on options?
STT on options is 0.05% and is charged on the sell side, calculated on the option premium (not the strike or contract value).
What is STT on exercised options at expiry?
If an in-the-money option is exercised at expiry, STT is charged at 0.125% on the entire contract value, calculated as 0.125% × (strike price + premium) × quantity.
How do I enter lots and lot size for options?
Enter the number of lots and your contract’s lot size (e.g. 75 for Nifty, 35 for Bank Nifty). The calculator uses lots × lot size to value the premium and ₹10 × lots for brokerage.
Why are exchange charges high on options?
Exchange transaction charges on options are 0.053% of the premium turnover — higher than other segments — and along with STT make up most of the cost on small premiums.
How do I find my options breakeven?
The calculator divides total charges by your contract quantity to show the per-unit premium move needed to cover costs before you profit.