Futures and Options in India: A Guide to How They Work

Last Reviewed and Updated: 17 Aug 2026

India is one of the largest derivatives markets in the world by volume, yet most retail investors who have been investing in stocks and mutual funds for years have only a fuzzy understanding of what futures and options actually are. They know the terms. They have seen the F&O segment mentioned in market news.

They understand it has something to do with leverage and risk. But the actual mechanics, how a futures contract works, how an options premium is set, who is on the other side of the trade, and when these instruments make sense versus when they are dangerous, remain unclear.

A derivative is a financial contract whose value is derived from an underlying asset. The underlying can be an equity index (like the Nifty 50), an individual stock, a commodity (like gold or crude oil), a currency, or an interest rate. The derivative itself is not the asset. It is a contract about the asset, and its value changes as the underlying asset's price changes.

Derivatives were invented for a practical purpose: hedging. A wheat farmer who will harvest grain in three months does not know what the price will be at harvest time. A bakery that needs to buy wheat in three months does not know what price it will pay. Both parties have price uncertainty. A futures contract lets the farmer lock in a selling price and the bakery lock in a buying price, eliminating the uncertainty for both. Neither the farmer nor the bakery needs to speculate. They are simply managing a genuine underlying exposure.

In financial markets, the same logic applies. A fund manager who holds a portfolio of Nifty 50 stocks and is worried about a near-term market decline can sell Nifty futures to hedge the portfolio, without selling the actual stocks. An importer who will receive dollars in three months can lock in the current rupee-dollar exchange rate using currency futures or options. These are legitimate, risk-reducing uses of derivatives.

The other use of derivatives is speculation: taking a position in a derivative without any underlying exposure to hedge, purely to profit from the price movement of the underlying. Speculation provides liquidity to the market, which benefits hedgers, but for the speculator the leverage embedded in derivatives makes losses potentially much larger than in direct equity investing. In India, the vast majority of retail F&O volume is speculative rather than hedging.

Futures: A Contract to Buy or Sell at a Predetermined Price

A futures contract is a standardised agreement between two parties to buy or sell a specific asset at a specific price on a specific date in the future. In Indian equity markets, the most commonly traded futures contracts are on the Nifty 50 index, the Nifty Bank index (Bank Nifty), and individual stocks (stock futures).

The key features of a futures contract are as follows.

• Standardised : Each futures contract covers a fixed number of units of the underlying. For Nifty 50 futures, the lot size is 65 units as of NSE's January 2026 revision (down from 75 previously). One Nifty futures contract at a Nifty level of 24,400 therefore has a contract value of 65 multiplied by 24,400, or approximately Rs 15.9 lakh. Stock futures have their own lot sizes, varying by company, and these are periodically revised by NSE to keep contract values within a target band.: Each futures contract covers a fixed number of units of the underlying. For Nifty 50 futures, the lot size is 75 units. One Nifty futures contract at a Nifty level of 24,000 therefore has a contract value of 75 multiplied by 24,000, which is Rs 18 lakh. Stock futures have their own lot sizes, varying by company.

• Predetermined price: When you buy or sell a futures contract, you agree to the transaction at the current futures price, which will be different from the spot price. The difference between the futures price and the spot price is called the basis.

• Expiry date: Nifty 50 index futures expire on the last Tuesday of each month, a change from the earlier last-Thursday expiry. There are three contract series available at any time: the near-month contract, the mid-month contract, and the far-month contract. Most volume is concentrated in the near-month contract.

• Daily mark-to-market settlement: Unlike buying a stock where your profit or loss is notional until you sell, futures contracts are settled daily. At the end of each trading day, the exchange calculates the profit or loss on your position based on the day's settlement price and credits or debits your account. This daily settlement is called mark-to-market (MTM) and is a fundamental characteristic of futures trading.

• Margin requirement: You do not pay the full contract value when you enter a futures position. Instead, you deposit a margin with your broker, which is a fraction of the contract value. Initial margin requirements for Nifty futures are typically 10 to 15 percent of the contract value. This means a Rs 18 lakh Nifty futures contract requires approximately Rs 1.8 to Rs 2.7 lakh as margin.

How a futures trade works in practice: Suppose you believe the Nifty will rise from 24,000 to 25,000 over the next month. You buy one Nifty futures contract at 24,000 (contract value: Rs 18 lakh, margin deposited: Rs 2 lakh). If the Nifty rises to 25,000, the futures price also rises approximately to 25,000, and your profit is (25,000 minus 24,000) multiplied by 75, which is Rs 75,000. On a margin of Rs 2 lakh, this is a return of 37.5 percent from a 4.2 percent move in the Nifty. This is the leverage effect of futures.

The same leverage works in the opposite direction. If the Nifty falls from 24,000 to 23,000, the loss is Rs 75,000. If your margin was only Rs 2 lakh, you have lost 37.5 percent of your margin from a 4.2 percent fall in the Nifty. If the fall continues, your broker issues a margin call, requiring you to deposit additional funds. If you cannot meet the margin call, the broker squares off (closes) your position at the prevailing market price.

Futures leverage amplifies both gains and losses in proportion to the underlying move. A 4% move in the Nifty can produce a 30 to 40% gain or loss on the margin deposited. This leverage is why futures are not suitable for investors without deep understanding of the mechanics.

Options: The Right But Not the Obligation

An option is a derivative that gives the buyer the right, but not the obligation, to buy or sell an underlying asset at a specified price (called the strike price) on or before a specified date (the expiry date). The buyer pays a price for this right, called the premium.

There are two types of options: call options and put options.

A call option gives the buyer the right to buy the underlying asset at the strike price. You buy a call option when you believe the underlying will rise. If the underlying rises above the strike price, the option becomes profitable. If it does not, you lose the premium paid but nothing more.

A put option gives the buyer the right to sell the underlying asset at the strike price. You buy a put option when you believe the underlying will fall. If the underlying falls below the strike price, the put option becomes profitable. If it does not fall below the strike price, you lose the premium paid but nothing more.

The most important difference between options and futures is asymmetry. The buyer of an option has a limited, known maximum loss (the premium paid) and an unlimited potential profit. The seller (writer) of an option collects the premium upfront but has a limited maximum profit (the premium received) and a potentially unlimited loss.

Options terminology is its own language, and getting these terms precisely right is necessary to understand how options behave.

Term	Definition	Example
Strike Price	The price at which the option buyer can buy (call) or sell (put) the underlying asset	A Nifty 24,500 Call option: strike price is 24,500; buyer has the right to buy Nifty at 24,500
Premium	The price paid by the option buyer to the option seller for the right the option provides	Nifty 24,500 Call at a premium of Rs 200: buyer pays Rs 200 per unit; one lot is 75 units, so total premium is Rs 15,000
Expiry Date	The date on which the option contract ceases to exist; in India, the last Thursday of the relevant month for monthly options; weekly options expire every Thursday	A June 2026 Nifty option expires on the last Thursday of June 2026
In the Money (ITM)	An option that would generate profit if exercised immediately; a call is ITM if spot price exceeds strike price; a put is ITM if spot price is below strike price	Nifty at 24,800; a 24,500 Call is ITM by 300 points
At the Money (ATM)	An option whose strike price is approximately equal to the current spot price; highest time value, most actively traded	Nifty at 24,000; the 24,000 Call and 24,000 Put are both ATM
Out of the Money (OTM)	An option that would have no intrinsic value if exercised immediately; a call is OTM if strike exceeds spot; a put is OTM if strike is below spot	Nifty at 24,000; a 25,000 Call is OTM; a 23,000 Put is OTM
Intrinsic Value	The immediate exercise value of an ITM option; for ITM calls: spot minus strike; for ITM puts: strike minus spot; zero for OTM options	Nifty 24,500 Call with Nifty at 24,800: intrinsic value is 300
Time Value	The portion of the premium above intrinsic value; reflects the possibility of the option becoming profitable before expiry; decays to zero at expiry	Premium is Rs 350; intrinsic value is Rs 300; time value is Rs 50
Open Interest (OI)	The total number of outstanding option contracts that have not been settled or closed; high OI indicates active market; used as a technical indicator	Nifty 24,000 Call OI: 50 lakh contracts outstanding

The value of an option premium changes in response to several factors: the underlying price, the time remaining to expiry, the implied volatility of the underlying, and the risk-free interest rate. The sensitivities of the premium to each of these factors are measured by the Greeks, named after Greek letters.

Greek	What It Measures	Practical Implication for Traders
Delta	How much the option premium changes for a Rs 1 change in the underlying price; ranges from 0 to 1 for calls and 0 to -1 for puts	A call with delta of 0.5 gains Rs 0.50 per unit if the underlying rises Rs 1; a delta of 0.5 also approximates the probability of the option expiring ITM
Theta	How much the option premium decays per day purely due to the passage of time; always negative for option buyers	An option with theta of -5 loses Rs 5 per unit per day just from time decay, independent of price movement; theta accelerates as expiry approaches
Vega	How much the premium changes for a 1% change in implied volatility	If implied volatility rises (e.g., due to an upcoming event), option premiums increase even if the underlying price does not move; Vega is why options become expensive before Budget or earnings announcements
Gamma	How much Delta changes for a Rs 1 change in the underlying; measures the convexity of the option's value	High Gamma means the option's behaviour changes rapidly with price moves; near-expiry ATM options have very high Gamma
Rho	How much the premium changes with a 1% change in the risk-free interest rate	Less important for short-duration equity options; more relevant for long-dated options

For a retail options buyer, the two Greeks that matter most in practice are Theta and Delta. Theta is the enemy of the option buyer: every day that passes without a sufficient move in the underlying, the option premium erodes. An option bought at Rs 200 per unit may be worth Rs 150 a week later even if the underlying has not moved, purely because time value has decayed. This time decay accelerates dramatically in the final week before expiry, which is why holding options through the last days before expiry is particularly risky for buyers.

Futures vs Options: Key Differences

Feature	Futures	Options (Buyer)
Obligation	Both buyer and seller are obligated to the contract	Buyer has the right but not the obligation; seller is obligated if buyer exercises
Maximum loss for buyer	Unlimited; loss depends on how far the underlying moves against the position	Limited to the premium paid; cannot lose more than the entry cost
Maximum loss for seller	Unlimited loss for short futures	Limited to the underlying move for call seller; for put seller, limited to strike price
Margin requirement	Required from both buyer and seller; significant; daily MTM	Buyer pays premium upfront; no margin required; seller (writer) must post margin
Time decay	Not applicable; futures do not have time value in the same sense	Theta continuously erodes premium for the buyer; benefits the seller
Leverage	High; typically 7 to 10 times on the margin deposited	High for buyers (limited loss, leveraged gain); very high risk for sellers
Profit potential	Proportional to underlying price move; no cap	Buyer: unlimited; Seller: limited to premium received
Complexity	Simpler concept; price moves one-to-one with underlying (at full delta)	More complex; affected by price, time, volatility, and the Greeks

The Indian F&O Market: Scale, Participation, and the Retail Problem

India's derivatives market is the largest in the world by number of contracts traded, driven predominantly by index options. In FY 2024-25, NSE alone handled more than 130 billion option contracts. The vast majority of this volume is in Nifty 50, Bank Nifty, and other index options, with weekly expiry contracts dominating.

The weekly options ecosystem deserves specific attention because it is the segment where retail losses are most concentrated and most severe. NSE introduced weekly Nifty options expiring every Thursday, and the combination of extreme leverage, rapidly decaying time value in the final days, and the appeal of large potential gains from small premium investments has drawn millions of retail traders into this segment.

SEBI commissioned a study in 2024 that examined the trading records of 10 million individual traders in the equity F&O segment over three years. The findings were unambiguous: 93 percent of individual traders who traded equity F&O between 2021 and 2024 made net losses. The average net loss per trader was Rs 2 lakh per year. The top 1 percent of profitable traders, who are predominantly institutional participants and sophisticated algorithmic traders, captured a disproportionate share of the profitable side of these transactions.

SEBI responded with measures effective from October 2024 to reduce speculative retail options activity: the minimum contract size for index derivatives was raised to Rs 15 lakh (from approximately Rs 5 to Rs 10 lakh), the number of weekly expiry contracts available was reduced, and margin requirements were increased. These measures have reduced overall volumes but have not eliminated retail participation.

SEBI's 2024 study found that 93% of individual F&O traders lost money over three years. This is not a coincidence or bad luck. It reflects the structural reality that most retail options activity is on the buyer's side, and option buyers are fighting theta decay, transaction costs, and the superior information and execution of institutional participants.

Who Is on the Other Side of the Trade

Understanding the counterparty in F&O trades clarifies why retail outcomes are systematically poor. The F&O market's other side is primarily institutional.

Market makers are entities, often proprietary trading firms, that continuously quote buy and sell prices in options contracts and profit from the bid-ask spread. They are highly sophisticated, algorithmically driven, and manage their exposure through complex delta-hedging strategies. They are not speculating on direction; they are arbitraging pricing inefficiencies and collecting the spread.

Proprietary trading desks at large brokerages and banks use quantitative strategies to identify and trade pricing anomalies in the derivatives market. These participants have speed, data quality, and risk management infrastructure that retail traders cannot match.

Foreign institutional investors and domestic hedge funds use index derivatives for hedging, relative value trading, and volatility strategies. Their participation in the market is based on sophisticated risk models.

The retail options buyer who purchases a weekly Nifty call in the last three days before expiry, hoping for a large move, is on the other side of a market maker who is pricing that option using an accurate volatility model and will hedge the risk immediately. The retail buyer is effectively paying for a lottery ticket on which the implied probability of winning is embedded in the premium price, which the market maker has set to be systematically in their own favour after accounting for their edge.

When F&O Actually Makes Sense: Legitimate Uses

Despite the retail loss statistics, derivatives serve legitimate purposes for investors with genuine underlying exposures. The following scenarios represent appropriate use of the instruments described.

• Portfolio hedging with put options: An investor who holds Rs 50 lakh of Nifty-correlated equity and is concerned about short-term volatility around a macro event (RBI policy, Union Budget, global data release) can buy Nifty put options to protect the downside for the duration of the event. The cost is the put premium, which is like an insurance premium. If the market falls, the put gain offsets the portfolio loss. If the market rises, the premium is lost but the portfolio profits. This is a defined-cost hedging transaction, not speculation.

• Covered call writing: An investor who holds shares of a company and expects the price to remain range-bound can write (sell) call options on those shares at a strike price above the current market. The investor collects the premium income. If the shares rise above the strike, they are called away at the strike price, which is still a profit on the shares from the entry price. This generates income on a portfolio that would otherwise generate none in a range-bound market. This requires holding the underlying shares, which limits the risk.

• Futures for reducing cash drag: Large institutional investors sometimes use futures to quickly establish market exposure without the transaction cost and market impact of buying large blocks of equity. An investor who has received a large inflow and needs to deploy Rs 5 crore into the market today can buy Nifty futures to establish immediate market exposure while taking several days to execute the underlying equity purchases at good prices.

• Currency hedging using forex futures: An exporter who will receive USD 10 lakh in 90 days can sell USD/INR futures to lock in the current exchange rate, protecting against rupee appreciation that would reduce the rupee value of the dollar receipts. This is textbook derivatives usage: hedging a genuine underlying currency exposure.

How F&O Income Is Taxed in India

The taxation of F&O income is one of the most important practical considerations for anyone active in this market. F&O income is classified as non-speculative business income under Section 43(5) of the Income Tax Act, which has several consequences.

F&O profits are taxed at the investor's applicable income tax slab rate. There is no flat 15 percent or 12.5 percent rate as with capital gains from equity. A trader in the 30 percent income tax bracket pays 30 percent tax on net F&O profits. In the new tax regime, the slab rates apply to combined income including F&O profits.

ITR-3 is the mandatory form for anyone with F&O income, regardless of whether they also have salaried income, capital gains, or any other income. Filing ITR-1 or ITR-2 when F&O income exists is a form mismatch that produces a defective return. This is one of the most common errors made by part-time F&O traders who also have salaried income.

F&O losses can be set off against any income except salary income in the same year. A net F&O loss of Rs 2 lakh in a year with Rs 8 lakh of business income, Rs 1 lakh of rental income, and Rs 50,000 of interest income can be set off in full against these income sources. F&O losses cannot be set off against salary income directly in the same year but can be carried forward for 8 years against future non-speculative business income.

Turnover for F&O is calculated as the absolute sum of profits and losses, not as the gross contract value. This is an important distinction that affects whether a tax audit is required. The tax audit threshold for digital traders is Rs 10 crore in F&O turnover. Most retail F&O traders are well below this threshold.

Expenses incurred in connection with F&O trading are deductible business expenses: brokerage, STT on options (STT on futures positions can also be claimed as a business expense), exchange transaction charges, software and data fees, and any other direct trading-related costs.

Tax Feature	F&O Income	Equity Delivery Capital Gains
Classification	Non-speculative business income	Capital gains (STCG or LTCG)
Tax rate	Applicable slab rate (10%, 20%, or 30%)	STCG at 20%; LTCG at 12.5% above Rs 1.25 lakh
ITR form	ITR-3 mandatory	ITR-2 (or ITR-3 if also have F&O income)
Loss set-off	Against most income except salary; 8-year carry-forward against business income	STCG loss against STCG and LTCG; LTCG loss against LTCG only; 8-year carry-forward
Audit threshold	Rs 10 crore turnover for digital traders; Rs 1 crore for others	Not applicable

Common Mistakes Retail F&O Traders Make

• Buying short-dated OTM options expecting large gains: OTM options with 2 to 3 days to expiry are very cheap in absolute premium terms, which makes them appear low-risk. They are actually extremely high-risk. Theta decay in the last 2 to 3 days before expiry is most severe, and the probability of an OTM option expiring in the money drops rapidly. Most expire worthless.

• Not understanding that selling options requires margin, not just the collected premium: New traders who want to sell options to collect premium income often do not realise that the broker requires significant margin for short option positions. A short Nifty call or put with Rs 200 premium collected per unit may require Rs 1.2 to Rs 1.5 lakh in margin per lot. If the market moves adversely, the margin requirement increases and losses can be multiple times the premium collected.

• Confusing F&O volume data with directional insight: Open interest, put-call ratio, and large strikes with high OI are often discussed in retail trading communities as if they provide directional signals. In reality, these data points reflect the market's collective positioning, not a prediction of future direction. Institutional participants routinely take positions that individual retail traders interpret as bullish or bearish signals when they are actually hedges or arbitrage legs.

• Not filing ITR-3 when F&O income exists: Using ITR-2 for a year with F&O trades is a defective return. Many salaried F&O traders make this error because they receive Form 16 from their employer and assume the employer's ITR guidance (which produces an ITR-1 or ITR-2) is the complete picture.

• Treating weekly options trading as a side income strategy: Weekly Nifty options are the product with the highest volume and the worst retail outcomes. The SEBI study's 93 percent loss rate is concentrated in this segment. Treating weekly options trading as a part-time income strategy is statistically equivalent to expecting to earn more from lottery tickets than you spend on them.

Disclaimer

Disclaimer: This article is for educational purposes only and does not constitute financial or investment advice. Futures and options trading involves substantial risk, including the risk of total loss of invested capital and losses exceeding initial investment in some cases. SEBI regulations, margin requirements, contract specifications, and tax rules are subject to change. Past performance statistics cited are based on published SEBI studies and do not guarantee future outcomes. Please consult a SEBI-registered financial adviser before engaging in any derivatives trading.