Physical Settlement in Derivatives

The Basics: What Physical Settlement Actually Means

At its core, physical settlement is straightforward: when a derivative contract reaches expiry (or is exercised early, in the case of American-style options), instead of settling the profit or loss in cash, the parties actually exchange the underlying asset. The seller delivers the asset, and the buyer pays for it and receives it.

In the equity derivatives world on NSE and BSE, the underlying asset is shares of a company. The futures or options contract specifies a particular stock, a lot size (the number of shares per contract), and an expiry date. If a contract is physically settled, the seller of the contract - whether it is a futures seller or the seller of a call option - is obligated to deliver the shares in the specified lot size on the settlement day. The buyer, on the other side, is obligated to pay the full contract value and receive the shares into their demat account.

In the commodity derivatives world, on exchanges like MCX (Multi Commodity Exchange) and NCDEX (National Commodity and Derivatives Exchange), physical settlement has a much longer history. Commodity futures on gold, silver, crude oil, agricultural products, and metals have always had a physical delivery mechanism, because the whole economic purpose of these contracts was to help producers and consumers hedge the price of actual physical goods. A farmer could sell wheat futures to lock in a price, and a flour miller could buy wheat futures to ensure a supply - with the expectation that, if both parties held to expiry, actual wheat would change hands.

In equity derivatives, however, the original logic was different. Stock futures and options were primarily used for speculation and hedging of portfolio price risk, not for the actual acquisition or disposal of shares. Cash settlement was perfectly adequate for those purposes. But SEBI's shift to physical settlement was designed to force more discipline: if you take a large speculative position in a small or mid-cap stock's futures, you now have to be prepared to actually deal in the shares. This makes it much harder to manipulate prices near expiry without having real capital at stake.

It is important to understand what 'in the money' means in this context, because not every option contract results in physical settlement. For call options, a contract is in the money (ITM) at expiry if the spot price of the stock is above the strike price. For put options, it is ITM if the spot price is below the strike price. Only ITM contracts at expiry trigger physical settlement obligations. Out-of-the-money (OTM) options expire worthless, and at-the-money (ATM) options are also cash settled or simply expire with no value - no delivery takes place.

For stock futures, the situation is slightly different: all futures contracts that are not squared off before expiry go to physical settlement, regardless of whether the holder is in profit or loss. There is no concept of a futures contract expiring worthless; it always has value (positive or negative) and will always result in delivery if held to expiry.

Index derivatives - Nifty 50 futures and options, Bank Nifty futures and options, and other index-based contracts - remain cash settled. This is because it is physically impossible to deliver a 'basket of 50 stocks' in the precise Nifty 50 weightings at scale. So the distinction between cash and physical settlement in India's F&O market currently falls cleanly along the line of index derivatives (cash settled) versus individual stock derivatives (physically settled).

History and Regulatory Context: Why SEBI Mandated Physical Settlement

To truly appreciate the significance of the physical settlement mandate, it helps to understand the context in which SEBI made this decision. India's equity derivatives market grew explosively after its launch in 2000, and by the mid-2010s, India had become one of the highest-volume derivatives markets in the world by number of contracts traded. This was partly a reflection of the market's maturity, but it also raised concerns about the quality of that volume.

Regulators noticed a recurring pattern: stock prices, particularly of mid-cap and small-cap companies, would sometimes exhibit unusual volatility in the days leading up to the monthly expiry of futures and options contracts. This volatility was partly attributed to the cash settlement mechanism itself. Because settlement happened at the final closing price of the stock on expiry day, there was an incentive - for large, well-capitalised players - to influence that closing price. If a party held a large number of call options with a particular strike price, pushing the spot price above that strike just before the market closed on expiry day could convert OTM options into ITM options, generating significant profit. This kind of price manipulation around settlement, while illegal, was extremely difficult to prove and prosecute under a cash settlement regime.

Physical settlement changes the incentive structure fundamentally. If you try to push a stock price up artificially on expiry day to benefit your call options, you now have to be prepared to actually receive and pay for shares at that inflated price. Anyone holding short futures or short call positions would need to actually deliver shares at that price. The sheer capital requirement of actual share delivery makes casual price manipulation far more costly and risky.

SEBI's July 2018 circular began the transition in phases. The first phase required a handful of stocks to move to physical settlement. Subsequent phases added more stocks over the following year. By October 2019, all stocks in the F&O segment were subject to compulsory physical settlement at expiry. This phased approach gave brokers, clearing corporations, and traders time to adapt their systems and risk management frameworks.

The mandate also aligned India with international norms. In developed markets, equity derivatives with physical settlement have long been the standard. The Options Clearing Corporation (OCC) in the United States, for instance, has always settled equity options through share delivery. SEBI's move was thus both a market quality measure and a step towards global best practices.

The National Securities Clearing Corporation Limited (NSCCL), which is NSE's clearing arm, and the Indian Clearing Corporation Limited (ICCL), BSE's clearing arm, were tasked with building the operational infrastructure for large-scale equity delivery through the derivatives settlement mechanism. They developed protocols for collecting delivery margins, identifying positions going to delivery, coordinating with depositories like CDSL and NSDL, and ensuring smooth settlement.

From the broker's perspective, the mandate required significant upgrades to risk management systems. Brokers now had to monitor client positions approaching expiry, send alerts about delivery obligations, collect additional delivery margins, and in some cases, square off client positions automatically if clients lacked the margins or shares needed for delivery. Many brokers began implementing auto-square-off policies for ITM options and open futures positions in the days or hours before expiry to protect themselves and their clients from unintended delivery obligations.

For retail traders, the message from SEBI's policy change was clear: equity derivatives are not a risk-free or purely abstract activity. When you take a position in a stock's futures or options, you are entering into an agreement that, if not managed actively, could result in you owning - or being required to deliver - a significant quantity of shares. This responsibility comes with capital requirements, demat account obligations, and a need for active position management that many casual traders were not accustomed to.

Mechanics of Physical Settlement in Equity Derivatives on NSE

Understanding the precise mechanics of physical settlement on NSE (and similarly on BSE) is essential for any F&O trader dealing in individual stocks. The process involves several steps, multiple participants, and strict timelines.

First, let us define the key roles. In any physically settled derivatives transaction, there are two counterparties: the buyer (the 'long' side) and the seller (the 'short' side). In stock futures, the long position holder must pay for and receive shares, while the short position holder must deliver shares. In call options, the buyer who exercises (or whose ITM option auto-exercises) must pay for and receive shares, while the seller (writer) of the call must deliver shares. In put options, the buyer who exercises must deliver shares and receive payment, while the seller (writer) of the put must receive the shares and pay for them.

The settlement cycle for physical delivery in India's equity derivatives segment is T+1 from the expiry date. This means that if your futures or ITM options expire on the last Thursday of the month (the standard expiry day for monthly contracts on NSE), the actual delivery of shares and corresponding funds movement happens on the following day (T+1).

For the delivery to go through, two things must be in place. The seller needs to have the shares in their demat account (linked to their trading account through their broker and depository participant). The buyer needs to have sufficient funds in their trading account to pay the full contract value - not just the margin, but the entire value of the shares (lot size multiplied by the settlement price). This is a critical point that surprises many retail traders: the capital requirement for taking delivery is far larger than the margin required to enter the futures position. A futures position might require a margin of 15-20% of the contract value, but taking actual delivery requires 100% of the contract value in cash.

The settlement price used for delivery is the closing spot price of the underlying stock on expiry day - the same price used to mark the final daily settlement. The buyer pays this price multiplied by the lot size, and the seller receives this amount (minus any profit or loss already settled through daily mark-to-market).

NSEL (the exchange) does not directly deal with individual buyers and sellers in settlement. Instead, it works through clearing members (which are typically brokers and their parent entities). The clearing member of the selling client debits shares from the client's demat account and delivers them to the clearing corporation's pool account. The clearing corporation then transfers these shares to the clearing member of the buying client, who credits them to the client's demat account. Funds flow in the opposite direction.

For early exercise (which is relevant for American-style options, though most equity options on NSE are European-style and can only be exercised at expiry), a similar but slightly different process applies. Since NSE's equity options are European-style - meaning they can only be exercised at expiry, not before - early exercise is not typically a concern for the Indian equity options market. This simplifies the delivery mechanics considerably compared to, say, US equity options markets.

One important operational detail is the concept of 'early pay-in'. Brokers can instruct their clients who have short futures or short call positions (i.e., who will need to deliver shares) to transfer shares into the broker's pool account before expiry day, even during the last few trading sessions. This 'early pay-in' reduces the last-minute scramble and can also result in margin relief for the short position holder, since the shares are already committed to delivery.

If a client's short position goes to physical settlement but the client does not have the shares in their demat account, the clearing corporation conducts an auction. In an auction, the shortfall in shares is procured from the market at a penalty, and the cost - typically higher than the settlement price - is passed on to the defaulting seller. This auction penalty mechanism is a strong disincentive for failing to deliver, and it is one reason why brokers are aggressive about ensuring clients square off or arrange for shares well before expiry.

Delivery Margin: The Financial Framework Around Physical Settlement

One of the most practically important aspects of physical settlement for retail traders is the concept of delivery margin. This is the additional margin that exchanges require as a futures or options contract approaches expiry, specifically to ensure that parties who are going into delivery have sufficient financial resources.

NSE and BSE specify that delivery margin kicks in from the fourth day before expiry (i.e., from the start of expiry week under the old monthly expiry system, though the exact timeline can vary based on exchange circulars - traders should always check the latest guidelines). The delivery margin requirement increases as expiry approaches, typically starting at around 10% of the contract value a few days before expiry and rising to 50% on the day before expiry, and ultimately to 100% (the full contract value) on expiry day itself.

This graduated increase serves a specific purpose: it gives traders who intend to square off their positions before expiry a manageable cost, while ensuring that those who hold to expiry have the full resources needed for delivery. A trader who squares off on Wednesday (assuming a Thursday expiry) would only have faced the intermediate delivery margin requirements, not the full 100% on Thursday.

The delivery margin is collected over and above the standard SPAN (Standard Portfolio Analysis of Risk) margin and exposure margin that are always required for F&O positions. So in the last week of an expiry cycle, a trader holding stock futures or ITM options can find their total margin requirement ballooning significantly. Brokers typically send alerts and may auto-square-off positions if the client's available margin falls short of the combined SPAN plus delivery margin requirement.

For traders who want to take intentional delivery of shares through the futures or options route - a legitimate and sometimes tax-efficient strategy - planning for this capital requirement is essential. You need to ensure that by expiry day, you have 100% of the contract value available in your trading account if you are taking delivery (buying), or that you have the shares ready in your demat account if you are giving delivery (selling).

It is also worth noting that the delivery margin requirement applies to all open stock futures and ITM stock options positions, not just those where the trader intends to take delivery. Even if you plan to square off before expiry, the margin system does not know your intention. It applies the delivery margin framework mechanically. This means that, from a capital planning perspective, you should either square off open stock F&O positions well before the last week of expiry or ensure you have sufficient funds to handle the escalating margin requirements.

Brokers handle the delivery margin in different ways. Some deduct it directly from the client's available margin balance, reducing the capital available for other trades. Others collect it as a separate requirement. It is important for traders to understand their broker's specific policies, which are disclosed in the broker's risk management policy document. SEBI mandates that brokers maintain transparent policies on this, and any auto-square-off actions taken by the broker on behalf of clients must follow the declared policy.

For those trading weekly expiry options - which became available for select stocks and indices - the delivery margin timelines are compressed but follow the same escalating structure. The shorter expiry cycle means that delivery margin can become a concern very quickly after entering a position, making short-duration stock options trading particularly margin-intensive if positions are held close to expiry.

Physical Settlement in Commodity Derivatives: MCX and NCDEX

While SEBI's 2018-2019 mandate for equity derivatives was a significant event in the Indian market, it is important to recognise that physical settlement has always been the backbone of commodity derivatives markets. In India, the two primary commodity exchanges - MCX (Multi Commodity Exchange of India) and NCDEX (National Commodity and Derivatives Exchange) - have operated with physical delivery mechanisms since their inception in the early 2000s.

On MCX, commodity futures contracts for gold, silver, copper, crude oil, natural gas, zinc, aluminium, and other metals and energy products have delivery provisions built into them. However, it is worth noting that most retail participants in commodity futures do not actually take or give delivery. They square off their positions before expiry. The physical delivery mechanism primarily serves the commercial users of these commodities - jewellers who want to take delivery of gold, refineries managing crude oil price risk, industrial manufacturers needing metals - for whom the ability to actually receive or deliver the physical commodity is the entire point.

The logistics of commodity delivery are more complex than equity delivery. For gold futures on MCX, delivery can only happen at designated vaults and delivery centres. The gold must meet specific purity standards (typically 995 fineness or 999 fineness, depending on the contract specification). Warehouse receipts are issued for commodities stored in accredited warehouses, and these receipts are what actually change hands during settlement. The buyer who takes delivery gets a warehouse receipt that entitles them to collect a specified quantity of the commodity from a designated location.

For agricultural commodities on NCDEX, the delivery mechanism involves accredited warehouses spread across agricultural mandis and storage hubs. Products like chana (chickpeas), soybean, mustard seed, wheat, and castor seed are deliverable through this system. The quality specifications are strict - only produce meeting exchange-approved grade standards is eligible for delivery. This quality enforcement function is one of the key economic benefits of organised commodity futures markets: they establish nationally recognised quality benchmarks.

From a tax perspective, commodity delivery has its own implications under Indian tax law. The receipt of physical goods through a commodity futures contract and the subsequent sale of those goods can have GST implications, and the cost of carry, storage, insurance, and assaying needs to be factored into the economics of taking delivery. Traders considering intentional delivery in commodity markets should consult a qualified tax advisor, as the rules are complex and may change with each Finance Act.

For currency derivatives on NSE's currency derivatives segment and BSE, the situation is different again. Currency futures and options in India are largely cash settled, with the RBI's reference rate used as the final settlement price. This is because the actual delivery of foreign currency at scale through an exchange mechanism would involve the regulated foreign exchange market in ways that the current regulatory framework does not accommodate for retail participants. So while physical settlement is possible in theory for currency derivatives, in practice the Indian market operates on cash settlement for currency F&O.

Interest rate derivatives, another segment in Indian capital markets, are also typically cash settled using RBI benchmark rates. So the physical settlement conversation in India is most practically relevant for equity derivatives (post-2019 mandate) and commodity derivatives (historically).

Who Is Affected? Buyers, Sellers, and Their Specific Obligations

Physical settlement affects different market participants in different ways, and understanding your specific obligations as a buyer or seller of futures and options is critical to avoiding unpleasant surprises.

Let us walk through each scenario systematically.

Scenario 1 - Long Stock Futures: If you have bought (gone long on) a stock futures contract and hold it to expiry without squaring off, you must take delivery of shares. You will need to have the full contract value (lot size multiplied by settlement price) available in your trading account by expiry. The shares will be credited to your demat account on T+1. This scenario requires substantial capital - far more than the initial margin you posted to enter the futures trade.

Scenario 2 - Short Stock Futures: If you have sold (gone short on) a stock futures contract and hold it to expiry, you must deliver the shares. You need to have the requisite number of shares (lot size) in your demat account by the time of settlement. If you do not own the shares, you will need to buy them in the cash market before expiry to be able to deliver. Failure to deliver results in an auction process, which is costly.

Scenario 3 - Long Call Option (ITM at Expiry): If you have bought a call option and the stock closes above the strike price at expiry (making the option ITM), the exchange will auto-exercise your option. You are now obligated to take delivery of shares at the strike price (not the spot price). This is an important distinction - the price you pay is the strike price, not the closing spot price. You must have the full value (lot size multiplied by strike price) available in your trading account.

Scenario 4 - Short Call Option (Stock Closes ITM): If you have sold (written) a call option and the stock closes above the strike price at expiry, you must deliver shares at the strike price. You need the shares in your demat account. If you do not have them, you face an auction penalty.

Scenario 5 - Long Put Option (ITM at Expiry): If you have bought a put option and the stock closes below the strike price at expiry, the exchange auto-exercises your option. You are obligated to deliver shares at the strike price. You must have the lot-size quantity of shares in your demat account. You will receive funds equal to lot size multiplied by strike price.

Scenario 6 - Short Put Option (Stock Closes ITM): If you have sold (written) a put option and the stock closes below the strike price at expiry, you must receive delivery of shares and pay for them at the strike price. You need the full payment amount available.

For multi-leg strategies - spreads, straddles, strangles - the delivery obligations of each individual leg are considered independently unless the exchange provides specific netting provisions. For example, if you have a bull call spread with a lower strike call (long) and a higher strike call (short), and the stock closes between the two strikes, only your long call might be ITM and trigger delivery - while your short call expires OTM. If the stock closes above both strikes, both legs are ITM, but they offset each other to some degree. Exchange rules on netting for spreads in physical settlement contexts should be checked carefully on the NSE or BSE circulars, as they can change.

For covered call writers - who own the underlying shares and have sold call options against them - physical settlement actually simplifies things. If the stock closes above the call's strike price, the writer delivers the shares they already own, receiving the strike price. This is the intended, low-risk use case for covered call writing.

For hedgers - say a promoter or large investor who has sold futures against a long stock position to lock in a price - physical settlement works naturally. The shares are delivered against the short futures position at expiry, completing the hedge without any cash settlement irregularity.

Tax and Accounting Implications of Physical Settlement

Physical settlement introduces specific tax and accounting considerations that are distinct from what applies to cash-settled derivatives. Understanding these is important for compliance, and traders should always consult a qualified chartered accountant (CA) familiar with Indian income tax law, as rules can change with the annual Finance Act.

The primary income tax question is: how is physically settled derivatives income classified? In general, for retail individuals, income from equity derivatives (futures and options) is treated as business income, regardless of whether settlement is cash or physical. This is because SEBI classifies F&O trading as a non-speculative business activity for tax purposes. The profits and losses from F&O are thus included in business income and taxed at the applicable income tax slab rate.

However, when physical settlement occurs, there is an additional layer of complexity: the actual shares received through settlement are now sitting in your demat account. When you eventually sell these shares, the capital gains tax treatment applies. The cost of acquisition of these shares - for capital gains calculation purposes - is the settlement price at which you received them (in the case of long futures delivery) or the strike price (in the case of long call option delivery). The holding period for long-term capital gains (LTCG) or short-term capital gains (STCG) purposes begins from the date of actual delivery credit to your demat account.

This creates an interesting planning opportunity for some investors. An investor who wants to accumulate shares in a particular company could potentially use long futures positions to acquire those shares, with the settlement cost as the acquisition price for future capital gains calculations. However, this must be done with a clear understanding of the total capital requirement and the tax treatment at each stage.

For Securities Transaction Tax (STT), physically settled contracts attract STT on the full contract value at the time of delivery, in addition to any STT that may have been paid at the time of entering or exiting the derivatives position. The STT rates applicable to delivery-based equity transactions are higher than those applicable to F&O trades (where STT is typically on the premium for options and on the notional value for futures, at lower rates). Refer to the latest Finance Act for current STT rates applicable to delivery transactions, as these are subject to revision.

For commodity derivatives with physical delivery on MCX or NCDEX, GST implications arise. The delivery of physical goods through a commodity exchange is treated as a supply of goods for GST purposes, and the applicable GST rate depends on the commodity in question. Some agricultural commodities may be exempt from GST, while metals, energy products, and processed goods attract GST at various rates. The exchange typically facilitates the GST documentation, but traders taking commodity delivery need to ensure they have a valid GSTIN and understand their GST obligations.

From an accounting perspective, a trader who takes physical delivery of equity shares through the derivatives segment needs to record the shares as stock-in-trade (for business income classification) or as investment (if the intention is long-term holding). The characterisation affects tax treatment and must be made consistently. The cost, brokerage, and any other charges paid at the time of delivery form the cost of acquisition.

Audit requirements under the Income Tax Act also need consideration. If a trader's turnover from F&O trading exceeds the threshold specified under Section 44AB, a tax audit is mandatory. For F&O, 'turnover' is typically calculated as the absolute value of all profits and losses during the year, which can quickly exceed the threshold even for moderate-sized traders. Physical delivery does not change this turnover calculation directly, but the additional capital flows involved can complicate bookkeeping.

Common Mistakes and Misconceptions About Physical Settlement

Given the relatively recent introduction of compulsory physical settlement in India's equity derivatives market, a number of misconceptions persist among retail traders. Addressing these directly can prevent costly errors.

Mistake 1 - 'My option will just expire worthless if I don't exercise it': This is true for OTM options. But for ITM options, the exchange conducts auto-exercise. You do not need to do anything for your ITM option to be exercised - and you do not have the option to simply 'let it expire' to avoid delivery. Auto-exercise is automatic. If you do not want delivery, you must close the position before expiry.

Mistake 2 - 'I only posted a small margin, so I only risk that margin amount': This is true for cash-settled contracts in a mark-to-market sense. But with physical settlement, the total capital obligation at expiry is the full contract value for buyers, or the full share delivery obligation for sellers. A trader who opened a futures position with ₹1 lakh of margin might be facing a ₹10 lakh delivery obligation at expiry. The margin was never the limit of your risk in a directional sense, and it is certainly not the limit of your capital requirement at delivery.

Mistake 3 - 'Index options also go to physical settlement': This is incorrect. Nifty 50, Bank Nifty, Nifty Midcap Select, and other index-based options and futures on NSE remain cash settled. Physical settlement applies only to individual stock (single-stock) derivatives. This is a fundamental distinction that traders must keep in mind.

Mistake 4 - 'Squaring off on expiry day morning is safe': While squaring off on expiry morning is better than not squaring off at all, it is not without risk. On expiry day, markets can be volatile, liquidity in certain options contracts may be thin, and bid-ask spreads may be wide. If a stock moves sharply in the morning session and your OTM options suddenly become deep ITM, the combination of price movement and wide spreads can make exit expensive. Squaring off one or two days before expiry is a more conservative and usually wiser approach.

Mistake 5 - 'My broker will always save me through auto-square-off': While many brokers do implement auto-square-off policies for positions approaching delivery, this cannot be taken for granted. Brokers' auto-square-off systems operate under specific conditions and may not always execute at the price you expect, especially in volatile markets. Relying on your broker to manage your position at the last minute is a poor practice. You are responsible for your positions.

Mistake 6 - 'Physical settlement is only relevant for large investors': Small retail traders with even a single lot of stock futures or options are subject to physical settlement rules. The lot sizes for individual stocks on NSE are set at minimum contract values that can range from roughly ₹5 lakh to several lakhs, meaning a single lot delivery obligation can be very large relative to a small trader's capital. There is no exemption for small participants - the rules apply uniformly.

Mistake 7 - 'Delivery margin is a one-time charge on expiry day': Delivery margin begins to be charged several days before expiry and escalates progressively. It is not a single event on expiry day. Traders who are not monitoring their margin utilisation carefully can find their accounts going into margin shortfall during expiry week, which can trigger auto-square-off of other positions to free up margin - a cascading effect that disrupts the entire portfolio.

Physical Settlement and Its Impact on Market Microstructure

Beyond the operational implications for individual traders, physical settlement has had measurable effects on the microstructure and behaviour of India's equity derivatives markets. These are important to understand, both for traders who want to anticipate market dynamics near expiry and for those studying the effectiveness of regulatory interventions.

The most noticeable effect has been a reduction in the artificial price movements near expiry that were a feature of the cash-settled era. The 'expiry effect' - where stock prices moved in ways that seemed disconnected from fundamentals in the last few sessions before expiry - has become less pronounced for individual stocks since physical settlement was introduced. This is evidence that the manipulation deterrent effect of delivery obligations has worked as SEBI intended.

Liquidity near expiry has also changed. Open interest in stock futures and options positions tends to decline more rapidly in the days before expiry under physical settlement, as traders who do not want delivery are motivated to close positions earlier. This reduces liquidity in near-month contracts as expiry approaches, particularly for mid-cap and small-cap stocks. It also increases the liquidity in next-month contracts (the 'next series') earlier than was the case under cash settlement.

The basis between futures prices and spot prices has also been affected. Under cash settlement, the final convergence of futures prices to spot was a mechanical event on expiry day. Under physical settlement, the delivery mechanism creates additional forces - the cost of funding shares, the availability of shares for delivery, short-selling constraints - that can affect how the basis behaves in the last few days.

For pairs traders and arbitrageurs who exploit the basis between the cash and futures markets, physical settlement has changed the risk profile of their strategies. A cash-futures arbitrageur who is long cash (shares) and short futures, planning to profit from the convergence of prices at expiry, now faces the delivery process as the settlement mechanism rather than a cash credit. For well-capitalised arbitrageurs with efficient clearing arrangements, this is not a significant obstacle; in fact, the delivery mechanism makes convergence more reliable. But for smaller operators, the operational demands of managing share delivery can be a constraint.

The introduction of physical settlement has also affected volatility patterns. Implied volatility in stock options - which reflects the market's expectation of future price movement - tends to spike less dramatically near expiry for individual stocks compared to the cash-settlement era, because the manipulation risk that contributed to expiry-day volatility has been reduced. However, the delivery margin escalation itself can create price pressure on stocks whose options are heavily weighted towards one side near expiry - for example, a stock with a very large open interest in slightly ITM call options may see selling pressure from options writers who are managing their delivery obligations.

From a market quality perspective, most analysts and regulators consider the shift to physical settlement to have been positive for India's equity derivatives markets. It has increased accountability, reduced manipulation, aligned incentives more closely with the underlying cash market, and encouraged more serious and well-capitalised participation in single-stock derivatives.

Example

Key benefits

How it works

1. 1
   Position Taken in F&O Segment

   A trader buys or sells a stock futures or stock options contract on NSE or BSE, posting the required SPAN and exposure margins with their broker.

2. 2
   Delivery Margin Kicks In During Expiry Week

   As the contract approaches expiry, the exchange mandates progressively increasing delivery margins on open positions, ensuring parties have resources to meet delivery obligations.

3. 3
   ITM Status Determined at Expiry

   On the expiry day, the exchange determines the final settlement price (for futures, this is the closing spot price; for options, the exercise value is determined by the spot price relative to the strike price). All ITM options are auto-exercised.

4. 4
   Delivery Obligations Assigned

   The clearing corporation (NSCCL for NSE, ICCL for BSE) identifies which positions result in delivery obligations - long positions must take delivery, short positions must give delivery.

5. 5
   Shares and Funds Transferred on T+1

   The clearing corporation coordinates the transfer of shares from the selling party's demat account to the buying party's demat account, and the corresponding funds move in the opposite direction, all settled on the day following expiry.

6. 6
   Auction for Failed Deliveries

   If a party obligated to deliver shares fails to do so, the clearing corporation conducts an auction to source the shortfall shares from the market, and the higher auction cost is charged to the defaulting seller.

7. 7
   Demat Account Updated

   On successful settlement, the buyer's demat account is credited with the delivered shares and the seller's account is debited, completing the physical settlement process.

Formula

Delivery Obligation (Buyer) = Lot Size × Settlement Price (for futures) or Lot Size × Strike Price (for exercised options)
Delivery Obligation (Seller) = Lot Size number of shares to be transferred from demat account at Settlement/Strike Price

Key takeaways

Frequently asked questions

Related terms