Cash Settlement

Q: How is the final settlement price of Nifty options calculated?

It is the closing value of the Nifty on expiry day, which NSE builds from the constituents' closing prices, not from the last traded value of the index. Since 3 August 2026 those are the Closing Auction Session prices; from 7 December 2026 they are the constituents' volume-weighted average prices over the last 30 minutes of continuous trading (15:00 to 15:30), under SEBI's circular of 15 October 2026. In-the-money options are exercised automatically at that price.

Q: Are all NSE options cash settled?

No. Index options and index futures are cash-settled. Stock options and stock futures have been physically settled since October 2019: an in-the-money stock option at expiry results in delivery or receipt of shares.

Q: When does the cash from an expired in-the-money option arrive?

The exercise settlement is paid on T+1, the business day after expiry, through NSE Clearing to the broker, who credits the client ledger. Out-of-the-money options simply lapse.

Q: Is STT charged on cash-settled options at expiry?

Yes, on the holder of an in-the-money option that is exercised: 0.15% of the intrinsic value from 1 April 2026. Writers do not pay STT at settlement; they paid it on the premium when they sold. For a barely in-the-money option the STT can exceed the payout, so many traders sell before the close.

Nobody delivers an index. At 15:30 on expiry day a Nifty option becomes a number, and the number is not the last tick.

In short: cash settlement is the closing of a futures or options contract at expiry by exchanging only the cash difference between the contract price (strike or futures price) and the exchange’s final settlement price. All NSE and BSE index derivatives settle this way. In-the-money options are exercised automatically for their intrinsic value; out-of-the-money options expire worthless. The final settlement price is the underlying’s closing value, computed by the exchange from the constituents’ closing prices (closing-auction based since August 2026; last-30-minute VWAP of continuous trading from 7 December 2026).

The intuition

A Nifty option gives the right to buy or sell “the Nifty”, but there is no Nifty to hand over, only fifty stocks in exact weights. So the exchange substitutes money for the thing. At expiry it fixes one official price for the index, and every contract is settled as if it had been closed at that price: a 24,000 call with the index settling at 24,150 is worth 150 points, and 150 × 65 rupees moves from the writer to the holder. That is the whole mechanism. No shares, no choice to exercise, no counterparty to find.

The official price is the part that catches traders out. It is not the last traded value of the index at 15:30. It is the closing value, which NSE builds from each constituent’s closing price: since 3 August 2026 the price set in the Closing Auction Session, and from 7 December 2026 the volume-weighted average of the constituent’s trades in the last 30 minutes of continuous trading (15:00 to 15:30). On a volatile close the two can differ by tens of points, which for a near-the-money option on expiry day is the difference between a payout and nothing.

Formula

Call payout = max(final settlement price − strike, 0) × lot size

Put payout = max(strike − final settlement price, 0) × lot size

Futures final MTM = (final settlement price − previous day’s settlement price) × lot size, signed for long or short

Final settlement price = closing value of the underlying index on expiry day, built from the constituents’ closing prices (closing-auction based since August 2026; last-30-minute VWAP of continuous trading from 7 December 2026).

Worked example (illustrative numbers)

Suppose it is a Tuesday expiry and NIFTY is at 24,000 at 15:00. A trader holds one lot (65 units) each of the 23,900 call, bought for ₹130 in the morning, and the 24,100 put, bought for ₹140. The index closes with a last tick of 24,085, but the exchange-computed closing value is 24,062.

Contract	Intrinsic at settlement 24,062	Payout per lot	Cost	Net
23,900 call	162	₹10,530	₹8,450	+₹2,080
24,100 put	38	₹2,470	₹9,100	−₹6,630

Had the last tick of 24,085 been used, the put would have paid only 15 points and the call 185. Neither trader did anything at 15:30; the exchange exercised both contracts automatically, credited the holders, debited the writers, and the positions vanished from every ledger. The call holder also paid STT on the exercise, at 0.15% of the intrinsic value (₹10,530), about ₹16.

The close of expiry day. Settlement uses the exchange-computed closing value, the green line, not the final print.

Why it matters to an options trader

Expiry-day pinning is about the average, not the close. Writers defending a strike care where the exchange-computed close lands, which is why the closing window on Tuesday has its own character.
There is no assignment risk on index options. A short index option can never deliver anything; the worst case is a cash debit of intrinsic value.
Early exercise does not exist. NSE index and stock options are European; cash settlement happens once, at expiry, so a deep in-the-money option before expiry is worth its intrinsic value plus time, never less.
Stock options are the exception. In-the-money stock options on NSE settle by delivery of shares, not cash; the glossary entry on physical settlement covers the schedule.

Common mistakes

Pricing expiry off the last tick. The closing value differs; near-the-money contracts can flip between worthless and paid.
Holding a tiny ITM option through expiry for the cash. The exercise attracts STT on the intrinsic value; for a barely-ITM contract that can exceed the payout, and selling before close avoids it.
Assuming settlement is instant. The exercise settlement credit arrives on T+1, the next business day, through the clearing corporation.
Forgetting the holiday rule. If the expiry Tuesday is a holiday, expiry and settlement move to the previous trading day.

Indian-market specifics

All index futures and options on NSE (Nifty, Bank Nifty, FinNifty, Midcap Select) and BSE (Sensex, Bankex) are cash-settled; the final settlement price is the closing value of the underlying index on expiry day (NSE equity derivatives settlement mechanism). Final settlement is on T+1.
Index closing value: built from the constituents’ closing prices, which are Closing Auction Session prices from 3 August 2026 and, from 7 December 2026, their volume-weighted average prices over the last 30 minutes of continuous trading (SEBI circular of 15 October 2026).
Expiry days: Nifty weekly and monthly on Tuesday (NSE circular FAOP68747, from contracts expiring 1 September 2025); Bank Nifty, FinNifty and Midcap Select monthly on the last Tuesday; Sensex weekly on Thursday on BSE; a holiday moves expiry to the previous trading day. NSE index options trade until 15:40 on expiry day under the current timing circular.
STT on exercise: 0.15% of the intrinsic value, paid by the holder, from 1 April 2026. Out-of-the-money options expire without any charge.
Stock options and stock futures are physically settled, not cash-settled, since October 2019.

FAQ

How is the final settlement price of Nifty options calculated?

The index closing value as the exchange computes it: closing-auction based since August 2026, a last-30-minute VWAP of continuous trading from 7 December 2026.

Are all NSE options cash settled?

Index contracts yes; stock contracts are physically settled.

When does the cash from an expired in-the-money option arrive?

On T+1, the business day after expiry.

Is STT charged on cash-settled options at expiry?

Yes, 0.15% of intrinsic value on the exercised holder.

See where expiry is likely to settle

The max pain page shows the strike where option payouts would be smallest from the latest close. In the app, Max Pain Reliability tracks how often the settlement actually landed near it, and the Calendars page lists every expiry and holiday shift.

Max pain today Settlement and expiry guide

Related terms

Physical Settlement, how stock contracts settle instead
Expiry, the day it happens
Intrinsic Value, what is paid
Max Pain, where settlement tends to gravitate