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Nifty Monthly Expiry

Nifty monthly expiry is the once-a-month Nifty 50 options and futures contract, currently expiring on the last Tuesday of the month on NSE, and it serves as the primary reference contract for rollovers and open-interest analysis.

Quick answer: Nifty monthly expiry is the once-a-month Nifty 50 options and futures contract, currently expiring on the last Tuesday of the month on NSE, and it serves as the primary reference contract for rollovers and open-interest analysis.

In simple words

Alongside the weekly, Nifty also has a monthly contract that runs for several weeks and expires once a month. It carries more time value than the weekly, so it costs more but decays more gently for most of its life. Because the monthly is watched for rollover activity and open interest, it is often treated as the 'main' Nifty contract that professional and positional traders focus on.

Purpose

The monthly gives traders and hedgers a longer runway for a view to develop and anchors the reference points — open interest, the option chain's overall shape, and futures rollover — that the market uses to read positioning.

Visual explanation

Nifty Monthly Expiry

The Nifty monthly contract expires once a month, on the last designated expiry weekday.

wk 1wk 2wk 3wk 4wk 5last TueWeekly expiryexpires every weekMonthly expiryone expiry per month

Professional explanation

When the Nifty monthly expires

Currently, the Nifty monthly contract expires on the last Tuesday of the calendar month on NSE. If that Tuesday is a trading holiday, the exchange moves expiry to the previous trading day — always confirm the exact date on NSE's published expiry calendar rather than assuming the calendar date.

How the monthly's decay differs from the weekly

A Nifty monthly option starts with roughly a month of time value, so its theta per day is modest for the first two to three weeks and accelerates sharply only in the final week, when it starts to behave much like a weekly option. This makes the monthly steadier to hold through short-term noise earlier in its life.

The option chain and open interest on the monthly

The monthly's option chain — the full grid of calls and puts across strikes — is widely used to read market sentiment, support and resistance zones (via open interest concentration) and the approximate 'max pain' level. Because it accumulates open interest over its full life, the monthly chain is generally considered more informative than the fast-turning weekly chain.

Rollover into the next month

As the monthly nears its expiry, futures and positional options traders roll their exposure to the next month's contract. The rollover percentage — how much open interest shifts forward rather than closing out — is tracked as a market-positioning signal around Nifty's monthly expiry.

Practical example (Nifty / Bank Nifty)

Illustrative — Nifty spot 25,000, lot size 75

Early in the month, with Nifty at 25,000, the monthly 25,000 CE might trade around ₹330, reflecting roughly four weeks of time value — far more than a same-strike weekly at ₹95–₹110. If the index is flat for the first two weeks, the monthly option might ease only modestly, whereas a weekly over the same period would have already expired and been replaced twice.

Because Bank Nifty and FinNifty now have only monthly contracts, their entire options activity concentrates into this single expiry each month, making the Bank Nifty monthly option chain a particularly closely watched positioning indicator compared with Nifty, where activity is split between weekly and monthly.

Advantages

  • More time value and gentler early decay make it easier to hold through short-term noise.
  • Richer, more stable option chain and open-interest data than the fast-rotating weekly.
  • The standard reference contract for rollover, positioning and term-structure analysis.

Limitations

  • Costs more upfront than a weekly for the same strike, due to the extra time value.
  • Its final week behaves like a weekly, with fast decay and rising gamma that catches some traders off guard.
  • Less precise than a weekly for hedging a single near-term event a few days away.

Why it matters in practice

  • Use the monthly when your view or hedge needs several weeks to play out rather than days.
  • Read the monthly option chain for open interest and max pain context, not the weekly, for a fuller picture.
  • Watch rollover activity in the days before monthly expiry as a positioning signal.
  • Apply the same expiry-day discipline (gamma, pin risk) to the monthly's final week that you would to a weekly.

Common mistakes

  • Paying for a month of time value when the underlying view only needs a few days (a weekly may be more efficient).
  • Assuming the monthly decays slowly right up to expiry — its last week accelerates sharply.
  • Ignoring holiday-adjusted expiry dates and assuming the last calendar Tuesday is always correct.
  • Reading open interest only from the weekly chain and missing the fuller picture in the monthly.

Professional usage

Professionals treat the Nifty monthly as the anchor contract: they build their core option-chain and open-interest reads from it, monitor rollover percentages into the next month for positioning clues, and apply extra caution once the monthly enters its final, weekly-like week of decay and gamma.

Key takeaways

  • The Nifty monthly currently expires on the last Tuesday of the month on NSE, adjusted earlier for holidays.
  • It holds more time value and decays more gently than the weekly, until its final week.
  • It is the primary reference contract for open interest, option-chain reads and futures rollover.

Frequently asked questions

When does the Nifty monthly expire?
Currently on the last Tuesday of the calendar month on NSE, or the previous trading day if that Tuesday is a holiday. Always confirm on NSE's published expiry calendar.
How is the Nifty monthly different from the weekly?
The monthly holds roughly a month of time value and decays gently until its final week; the weekly holds only days of time value and decays quickly throughout its short life.
Why do traders watch the Nifty monthly option chain closely?
Because it accumulates open interest across strikes over its full life, making it a richer source for reading sentiment, support/resistance zones and the approximate max-pain level than the faster-turning weekly.
What is rollover in the Nifty monthly context?
Rollover is closing a position in the expiring monthly contract and simultaneously opening the equivalent position in the next month, to maintain exposure. The rollover percentage is tracked as a positioning signal.
Does the Nifty monthly decay slowly all the way to expiry?
No. Decay is modest for most of its life but accelerates sharply in the final week, when the monthly starts behaving much like a weekly option.
Is the Nifty monthly more expensive than the weekly?
Yes, generally, because it holds more time value — there is more time for the index to move, so the extrinsic portion of its premium is larger.
Can the Nifty monthly expiry date change due to holidays?
Yes. If the last Tuesday of the month is a trading holiday, NSE moves the expiry to the previous trading day, which is why the official expiry calendar should be checked rather than assumed.
What happens if I hold my Nifty monthly option to expiry?
It is auto-exercised in cash if in-the-money at the final settlement price, or lapses worthless if out-of-the-money, exactly like any Indian index option.
Is the Nifty monthly used for max pain analysis?
Yes, max pain — the strike where option writers as a group would have the smallest payout — is commonly estimated from the monthly option chain because of its deeper open interest.
Should I trade the Nifty weekly or monthly?
It depends on your time horizon: the monthly suits views needing weeks to develop and steadier decay; the weekly suits short-term trades but decays and swings faster. Neither is advice — match the contract to your horizon.
Do weekly and monthly Nifty contracts ever expire on the same day?
Yes. In the week containing the last Tuesday of the month, that week's Nifty weekly and the Nifty monthly expire together, typically producing an especially active session.
Is the Nifty monthly cash-settled?
Yes. Like all Nifty derivatives it is cash-settled against the final settlement price — there is no delivery of the index.

Voice search & related questions

Natural-language questions people ask about Nifty Monthly Expiry.

When is Nifty's monthly expiry?
Currently the last Tuesday of the month on NSE, moved earlier if that day is a holiday — check NSE's expiry calendar for the exact date.
Why is the monthly Nifty option more expensive than the weekly?
Because it carries more time value — weeks of possible index movement are priced in, compared to just days for a weekly.
What is rollover on Nifty expiry?
It's when traders move their position from the expiring monthly contract to the next month's contract instead of letting it expire, to keep their exposure going.
Which Nifty option chain should I look at for sentiment?
The monthly chain is generally more informative since it holds deeper, more stable open interest than the fast-rotating weekly.
Does the Nifty monthly decay fast near the end?
Yes, its final week behaves much like a weekly option, with decay and gamma both increasing sharply.

Sources & references

Last reviewed 11 July 2026. Educational content only — not investment advice. Exchange rules change; verify current conventions on NSE/BSE.

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Educational content only — not investment advice. Examples use illustrative numbers and current exchange conventions that may change. Options and futures involve substantial risk. See our Risk Disclosure and SEBI Disclaimer.