Most people pick a broker by looking at one number. That number is brokerage. It sits in every ad and looks easy to compare. Stop there, though, and the final bill will surprise you.
Picture one Nifty lot. Buy a call, sell it the same day, and repeat that trade on two platforms. The strike matches and the price matches. Yet the two bills can still differ once the market closes.
Read the contract note first
A contract note is not a receipt for brokerage alone. It is a stack of separate lines. Brokerage is one of them. Securities transaction tax, exchange fees, and a SEBI levy each get their own row. GST applies to some of those lines, not all of them. Scan only the brokerage row and you miss most of the bill.
A good trading app cannot rewrite tax. It can change how many orders you send, though, and that changes the total.
One lot, one honest bill
Take a Nifty call bought at ₹200 and sold at ₹230. The lot size is 65, so the gross gain is ₹1,950. On a flat fee plan, brokerage is ₹20 a side, or ₹40 in all. Tax on the sell premium at 0.15% comes to about ₹22. The exchange charges are about ₹10 and the GST charges are about ₹9. The total lands are around ₹80, making a net profit of around ₹1,870.
Futures make the gap louder. One Nifty lot near 25,000 is a contract worth about ₹16 lakh. Tax at 0.05% on the sell side is about ₹800. A flat plan still takes only ₹20 a side. A pure percentage plan at 0.05% would add roughly ₹800 more on each side.
What stays the same on every platform
Some costs never move when you switch apps. The government sets the securities tax. Exchanges set their own fees, and SEBI takes ₹10 on every crore of turnover. Stamp duty hits the buy side, and GST is 18% on brokerage and fee lines. So a zero brokerage offer still leaves tax and exchange costs on the table.
How the main platforms compare on F&O costs
The real differences sit in fee structure, account charges, and how a platform bills your orders. Here is how six popular names stack up, with HDFC Sky first.
- HDFC Sky: Options cost ₹20 per executed order. Futures cost ₹20 or 0.1%, whichever is lower. Account opening is free, and demat AMC is waived for the first year, then ₹20 a month. Free research recommendations make it a fit for traders who want ideas and low costs together.
- Zerodha: The Options charges at ₹20 per order executed. Futures have a lower percentage cap of around 0.03%, which means that the flat fee is typically in effect. Comparison sites report a small account opening fee and a yearly AMC of around ₹300. Its Kite platform is popular with active traders.
- Groww: Options cost ₹20 per executed order. Account opening is free and demat AMC is zero. It is suitable for users who prefer using the app in a simple interface, but lacks some advanced features.
- Upstox: Options cost ₹20 per executed order. Yearly AMC is reported at around ₹300, with the first year often free. Traders often pick it for its charting tools and F&O focus.
- Angel One: Options cost ₹20 per executed order. Comparison sites list demat AMC at around ₹240 a year. It pairs flat fee trading with research and advisory support.
- Choice: Options cost ₹20 per lot, and intraday equity is 0.02% or ₹20, whichever is lower. Account opening is free, and AMC is waived for the first year, then ₹200 a year. Daily expert research calls come with the account.
Where the extra rupees sneak in
Watch one detail closely. Some platforms bill options per executed order, while others bill per lot. On a single lot, the two look identical. On a five lot order, the bills part ways fast.
Order slicing matters too. Some apps split big orders so the freeze limit does not block you. Each slice can bill as a fresh order. Five tiny fills can also mean five separate fees.
GST follows brokerage, so higher brokerage means higher GST. Spreads never print as a line, yet they still take money.
What the tools change
Charts and payoff views do not cut tax. A margin calculator can stop a panic exit, though. Run one sample F&O trading trade through the platform’s calculator. Look at the total, not the headline fee.
Then trade small for a week and save every contract note. Divide total costs by the number of fills. That figure is your true ticket size.
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