Settlement is what happens to an open contract when it reaches expiry. In India, index options (NIFTY, BANKNIFTY, SENSEX) are settled in cash. Stock options are physically settled: if a stock option is in the money at the end of expiry day, the buyer and the seller must exchange the real shares at the strike price. The exchange's clearing corporation matches who delivers to whom and moves the money and shares through your trading and demat accounts.
SEBI moved stock derivatives to physical settlement in stages between 2018 and 2019. The aim was to tie the derivatives price more closely to the real share market and to reduce speculation without the ability to deliver. For traders it means one thing: a stock option position held into expiry can turn into a large share transaction.
Which options get settled, and how
An option is in the money (ITM) at expiry when exercising it is worth something: a call whose strike is below the final settlement price, or a put whose strike is above it. The exchange exercises every ITM option automatically. Out-of-the-money (OTM) options expire worthless and need nothing more. The ITM, ATM and OTM guide explains these terms in detail.
| Your position (ITM at expiry) | What you must do | What you need in your account |
|---|---|---|
| Bought a call | Buy the shares at the strike | Full value: strike × lot size |
| Sold a put | Buy the shares at the strike | Full value: strike × lot size |
| Bought a put | Sell (deliver) the shares at the strike | The shares in your demat account |
| Sold a call | Sell (deliver) the shares at the strike | The shares in your demat account |
The same applies to stock futures held to expiry: a long future becomes a purchase of shares, a short future becomes a delivery.
A worked example
Suppose Reliance Industries trades at ₹1,420 and you buy one lot of the ₹1,400 call for this month. For the example, assume a lot of 500 shares (check the current lot size on NSE). The premium is ₹35, so you pay ₹17,500.
On expiry day Reliance Industries settles at ₹1,450. Your call is ₹50 in the money. If this were an index option you would just receive ₹50 × 500 = ₹25,000. Because it is a stock option, you must instead buy 500 shares at ₹1,400, which is ₹7,00,000. Your profit is still the same on paper (you buy at ₹1,400 shares worth ₹1,450), but you need ₹7 lakh available, and you end up holding shares that can fall the next morning.
If you had sold that call instead, you would have to deliver 500 Reliance Industries shares at ₹1,400. If you do not own them, the delivery fails and the exchange's auction penalty can be costly.
Before holding any stock option near expiry, look at where the share is trading and how far it is from your strike. Here is the live technical summary for Reliance Industries:
The key thing to check is the distance between the current price and your strike, and whether the trend is pushing the share towards or away from it. A strike that is just out of the money two days before expiry can easily end in the money.
Higher margins in expiry week
Because a physical settlement can require the full value of the shares, the exchange and brokers ask for more money as expiry approaches. In practice:
- Brokers start charging extra "delivery margin" on ITM and near-the-money stock positions a few days before expiry, rising day by day until it reaches a large share of the contract value.
- Option buyers, who normally pay only the premium, may suddenly be asked for margin on an ITM long call or put.
- If you cannot meet the margin, the broker may close your position at the market price, possibly at a poor price.
Each broker has its own schedule, so read your broker's physical settlement policy and check it again before every expiry.
Netted positions and spreads
Some positions offset each other. If you hold a long call and a short call in the same stock and both end ITM, you would receive shares from one leg and deliver them on the other, so the delivery largely cancels and only the price difference remains. Exchanges net such obligations, but margins in expiry week may still be charged on each leg depending on your broker's rules. Do not assume a spread is safe from settlement until you have checked.
A dangerous case is a spread where one leg ends ITM and the other just OTM. For example, a bull call spread with Reliance Industries at ₹1,400 call bought and ₹1,440 call sold, with the share settling at ₹1,430: the bought call is exercised and you must buy 500 shares, but the sold call expires, so nothing offsets the purchase.
Taxes and costs on settlement
Exercised options are charged securities transaction tax (STT) on their settlement value, which is usually much more than the STT you pay on selling the option in the market. Delivery trades also carry delivery charges and stamp duty. Rates change with budgets, so check the current figures with your broker and on the exchange's website; the trading costs guide explains each charge. For many traders, selling an ITM option before expiry is cheaper than letting it be exercised.
How it differs from index options
An index option at expiry needs nothing from you: the profit or loss is credited or debited in cash. That is one reason most short-term option traders in India stick to index options. Here is the NIFTY chain, where every strike settles in cash:
Compare the number of actively traded strikes here with a typical stock option chain. The index vs stock options guide covers the other differences.
How traders handle physical settlement
- Exit early. Most traders close or roll stock option positions two or three trading days before expiry, before margins rise.
- Use it on purpose. Some investors sell puts on a share they would like to own at a lower price, and accept delivery if assigned. Others hold a covered call on shares they already own and are happy to deliver.
- Roll to the next month. Close the current month and open the same view in the next month's contract, which avoids delivery.
- Watch the last day closely. A share near your strike in the final hour can flip your option from OTM to ITM.
Common mistakes
- Thinking a cheap option is "safe" to hold. A ₹2 option that ends ₹1 in the money still means delivery of the full lot.
- Selling calls on shares you do not own and holding to expiry. A failed delivery is penalised.
- Ignoring the broker's auto square-off time. It may close your position before you expect, at whatever price is available.
- Not keeping cash ready. A long ITM call needs the full share value on settlement.