A Nifty 50 futures contract cannot be introduced at less than ₹15 lakh. That is the position you take on, whatever margin you post to take it.
Stock index futures are sold as a cheaper way to trade the index. The margin is smaller. The obligation is not.
What Are Index Futures?
An index future is a contract to buy or sell the value of an index at a set price on a set date. You cannot deliver an index, so nothing changes hands but money.
The index futures meaning is easiest to hold that way: you are agreeing a level today and settling the difference later. The stock index futures meaning is identical, since the index is the underlying in both.
How Do Stock Index Futures Work?
The part most explanations skip is that the contract does not wait for expiry. Every evening your position is reset to that day's settlement price, and the difference is paid to you or collected from you.
NSE Clearing sets that settlement price as the last thirty minutes volume weighted average price of the contract. The pay-in and pay-out of this mark to market runs on T+1, the next working day.
So a loss reaches your account the morning after it happens, not at expiry.
Key Features of Stock Index Futures
Nifty 50 futures expire on the last Tuesday of the expiry month, or the previous trading day if that Tuesday is a holiday. Many pages still say Thursday, which has not been right for some time.
Three contracts trade at once: near month, next month and far month. Settlement is in cash against the final settlement price, because there is nothing physical to deliver.
Types of Index Futures
Contracts exist on broad market indices and on sectoral ones. Broad market contracts track the headline indices, while sectoral ones track a single sector such as banking or technology.
The choice matters for liquidity more than exposure. A thinly traded contract is hard to exit at a price you like.
Importance of Index Futures
They give the market a forward price for the index, which the cash market does not produce on its own.
They also let a diversified portfolio reduce market exposure without selling anything, which is why institutions use them. That hedge is not free, since it carries margin and daily settlement of its own.
Benefits of Trading Stock Index Futures
You take a view on the whole index rather than picking stocks, and the margin is a fraction of the contract value.
That fraction is the catch as well as the appeal. A small adverse move against a large contract can exceed the margin you posted, and the exchange can raise the requirement while you hold.
Risks and Limitations of Index Futures
Read this section twice. The loss on a futures position is not capped on either side, unlike a bought option where the buyer risks only the premium.
The daily cash call is the risk traders underestimate. You can be right about the direction over a month and still be closed out in week two, because the money moves every evening and yours ran out.
Margin is set by the exchange and can be raised at short notice, usually when volatility rises and the position is already under pressure.
Index Futures vs Stock Futures
Index futures | Stock futures | |
Underlying | An index | A single company |
Settlement | Cash | Delivery of shares |
Risk driver | Broad market moves | Company events as well |
Exit | Close the position | Close, or take delivery |
The settlement row is the practical difference. An index cannot be delivered, so an index position always ends in money.
Who Can Consider Trading Index Futures?
Traders who can fund a daily loss without disturbing anything else, and who understand that margin is a deposit rather than the cost.
Systematic participants use these contracts heavily, the ground covered in F&O in algorithmic trading. Anyone who cannot meet a margin call that week should not hold one.
How to Trade Index Futures in India?
You need a trading account with F&O activated, funds for the initial margin, and headroom for the daily settlement on top of it.
Decide the contract month and the direction, then size the position against the contract value rather than the margin.
Costs apply on both legs. Brokerage is 2.5% or ₹11 per executed order, whichever is lower, across NSE (CM, FO, CD), BSE (CM, FO) and MCX. Securities transaction tax adds 0.05% on the sale side, at rates in force since 1 April 2026.
Before the first trade, check that you can fund a bad day rather than only a bad expiry.
Also Read: Before taking a trading position, beginners can also review Essential Tools for Beginners in Trading to understand commonly used tools for analysing market setups.
Conclusion
Index futures are settled every evening, and that is the fact to build around. Expiry decides the final number, but the daily settlement decides whether you are still holding the position when it arrives.
Work out three things first. The full contract value, not the margin. The cash you would need if the index moved against you for several sessions. And the expiry, which is the last Tuesday of the month.
If the daily cash requirement looks uncomfortable at the size you were planning, the size is wrong. Losses on a futures position can exceed the amount first committed.
