SEBI Rules for F&O Trading: What Changed and Why It Matters

By Vinoth Kanna Published 18 August 2026 Updated 24 September 2026 14 min read Guides · Futures & Options

A trader who stepped away from Indian index options in mid-2024 and returned today would find a different market. Lot sizes changed, most weekly expiries disappeared, expiry days moved twice, option premiums must be paid in full upfront, and position limits are now measured in a way that did not exist before July 2025. Between October 2024 and October 2025, SEBI rebuilt the rulebook for equity derivatives almost end to end. In 2026 the derivatives session itself changed: it now closes at 3:40 pm, after a closing auction in the underlying shares, and that timetable is already under review.

This guide explains how SEBI’s rules impact options trading in India: each major measure, its circular date, its effective date, and what it practically changed for a retail participant. The F&O new rules did not arrive in one announcement, which is why so much online commentary quotes stale lot sizes or the wrong expiry day. Contract-level details here are checked against NSE’s own contract files dated 23 September 2026, and the primary circulars are linked at the end. If you are new to derivatives, read what options trading means and the F&O hub first; this article assumes you know what a lot, a premium and an expiry are.

Why SEBI intervened: the loss studies

The regulatory motivation is not a mystery. SEBI published the numbers itself.

The updated SEBI study released on 23 September 2024 examined roughly 1.13 crore unique individual equity F&O traders between FY2022 and FY2024 (April 2021 to March 2024). Its findings: 93% of individual traders made net losses over the three years, with aggregate net losses exceeding Rs 1.8 lakh crore. FY2024 alone accounted for about Rs 75,000 crore. The average loss worked out to roughly Rs 2 lakh per trader, and only about 1% of individuals earned more than Rs 1 lakh in profit after costs.

A follow-up study published on 7 July 2025 covered FY2025, the year in which the new framework began taking effect. About 91% of individual traders in the equity derivatives segment still made net losses, and aggregate net losses widened 41% to Rs 1,05,603 crore, from Rs 74,812 crore in FY2024. The number of unique individual F&O traders fell about 20% year-on-year between December 2024 and May 2025.

A further SEBI study, published on 20 August 2026, covered FY2026, the first financial year with all six October 2024 measures in force from its first day. Aggregate net losses of individual traders fell 18% to Rs 91,685 crore, from Rs 1.12 lakh crore in FY2025; SEBI revised its FY2025 figure up from the July 2025 study after widening its broker sample from 13 to 15. Active individual traders fell 18% to 87.5 lakh, the first annual fall after a decade of growth. Yet 87.7% of individual traders still made net losses, the average loss per trader edged up to about Rs 1.17 lakh, and around 92% of individuals’ losses came from options.

Those studies frame everything below. Participation fell after the rules changed, but the odds for those who stayed moved only slightly. SEBI’s measures were designed around access, contract economics and systemic risk — not around making a losing activity profitable.

The October 2024 framework: six measures, three dates

The core package came in SEBI circular SEBI/HO/MRD/TPD-1/P/CIR/2024/132 dated 1 October 2024, titled “Measures to Strengthen Equity Index Derivatives Framework for Increased Investor Protection and Market Stability”. Six measures, phased in on three dates:

Measure	Effective from	What it does
Minimum contract value raised to Rs 15 lakh (lot sizes set so contract value stays in a Rs 15–20 lakh band)	20 November 2024	Raises the smallest possible index-derivative exposure roughly threefold
Weekly expiries limited to one benchmark index per exchange	20 November 2024	NSE kept only NIFTY weeklies; BSE kept only SENSEX weeklies
Additional 2% Extreme Loss Margin on short options expiring that day	20 November 2024	Charges sellers for expiry-day tail risk
Upfront collection of full option premium from buyers	1 February 2025	Ends intraday leverage on premium; you pay the full premium when you buy
Calendar-spread margin benefit removed on expiry day	1 February 2025	A spread involving a contract expiring that day is margined as two positions
Intraday monitoring of position limits, minimum four random snapshots daily	1 April 2025	Began without penalties; superseded by the binding 2025 regime described below

Bigger contracts, recalibrated lots

The earlier Rs 5–10 lakh minimum contract value dated from 2015, when index levels and retail participation were both far smaller. Raising the floor to Rs 15 lakh means the smallest index futures or short-option position now represents a Rs 15–20 lakh notional exposure. That matters because lot size, not account balance, decides the minimum bet: one careless futures lot is now a fifteen-lakh-rupee exposure, not a five-lakh one.

Lot sizes are revised periodically to keep contract value inside the band as index levels move. As of NSE contract files dated 23 September 2026, the current index lot sizes are:

Index	Current lot size
NIFTY	65
BANKNIFTY	30
FINNIFTY	60
MIDCPNIFTY	120
NIFTYNXT50	25
NIFTYFPI	1,100

Many websites still quote the November 2024 lots (NIFTY 75, for example). Those are stale. The F&O stock list and lot sizes page tracks the current values from exchange files; on 23 September 2026 the segment held 210 stocks and 6 indices.

One weekly expiry per exchange

Before 20 November 2024, a trader could find an index option expiring almost every day of the week across BANKNIFTY, FINNIFTY, MIDCPNIFTY, NIFTYNXT50, NIFTY, SENSEX and BANKEX. The rationalisation discontinued weekly contracts on everything except one benchmark per exchange: NIFTY on NSE and SENSEX on BSE. BANKNIFTY, FINNIFTY, MIDCPNIFTY and NIFTYNXT50 now trade monthly contracts only, as does BANKEX, and NIFTYFPI, added in August 2026, was listed that way from the start. The daily-expiry calendar — and the daily zero-days-to-expiry churn built on it — ended with that change.

Premium and margin changes

Three measures changed the cash mechanics. Buyers now pay the full option premium upfront from 1 February 2025, which removed the intraday funding brokers previously extended against premium. Sellers carry an extra 2% Extreme Loss Margin on short options on their expiry day. And a calendar spread that includes a contract expiring that day gets no offset benefit on expiry day, so a position that was cheap to hold the day before can demand materially more margin on expiry morning; a 2026 circular, covered below, extended this to single-stock spreads. The options margin and premium calculator shows what a given position requires under the current rules.

Expiry days moved again in 2025

The October 2024 circular fixed how many weekly expiries exist. A separate circular dated 26 May 2025 fixed when they can occur: final settlement of all equity derivatives is restricted to Tuesday or Thursday, one weekday per exchange. From 1 September 2025, NSE moved all its expiries to Tuesday and BSE to Thursday — a straight swap of the days they had been using.

That is the regime in force today. NIFTY weekly options expire on Tuesdays, and NSE’s monthly index and stock F&O series end on the last Tuesday of the month. When that Tuesday is a trading holiday, expiry moves to the previous trading day: NSE’s contract files dated 23 September 2026 show a Monday NIFTY weekly expiry on 19 October 2026, because 20 October is a Dussehra holiday, and a Monday monthly expiry for index and stock contracts alike on 23 November 2026, because 24 November is Guru Nanak Jayanti. The F&O expiry calendar lists every upcoming expiry from the same files, which is safer than relying on articles written before September 2025 that still say Thursday for NSE.

Position limits: from notional to delta

The second big structural change came in SEBI circular SEBI/HO/MRD/TPD-1/P/CIR/2025/79 dated 29 May 2025. Open interest is now measured on a delta-adjusted, futures-equivalent (FutEq) basis rather than on notional value, so a deep out-of-the-money option no longer counts the same as a future. On that basis, end-of-day index options limits per entity became Rs 1,500 crore net and Rs 10,000 crore gross from 1 July 2025 on a glide path, fully from 6 December 2025. For single stocks, the market-wide position limit was linked to cash-market activity from 1 October 2025: the lower of 15% of free-float market capitalisation or 65 times average daily delivery value, subject to a floor of 10% of free float.

Intraday limits then became binding through a circular dated 1 September 2025. From 1 October 2025, index options positions are capped intraday at Rs 5,000 crore net and Rs 10,000 crore gross FutEq, monitored through at least four random snapshots daily, one of them between 2:45 pm and 3:30 pm. Exchanges examine breaches through surveillance, and from 6 December 2025 an expiry-day breach also attracts a penalty or an additional surveillance deposit. This regime supersedes the penalty-free monitoring that began in April 2025 under the original circular.

No household portfolio approaches these entity-level numbers. They still matter to retail traders for two reasons. First, they constrain the large proprietary desks whose expiry-day activity supplies much of the liquidity retail orders trade against. Second, the recast stock MWPL feeds directly into the F&O ban list: when open interest in a stock crosses 95% of its MWPL, new positions are barred. The list changes often, so any list printed in an article goes stale quickly; the live ban list page is updated from exchange files each trading day.

What changed in 2026

The 2026 changes that reach retail traders were narrower than the 2024–25 package, but two of them change how an expiry day works.

Stock calendar spreads lost their expiry-day offset. A SEBI circular dated 5 February 2026, effective three months later, extended the index rule to single-stock derivatives: a stock calendar spread with one leg expiring that day gets no offsetting margin benefit on expiry day. A spread between two later months keeps its benefit.

A closing auction, and a derivatives close at 3:40 pm. Under a SEBI circular dated 16 January 2026, the closing price of stocks with F&O contracts has been set by a Closing Auction Session since 3 August 2026, and that auction price also feeds the settlement price of expiring derivatives. The same circular kept equity derivatives trading, index and stock contracts alike, open until 3:40 pm instead of 3:30 pm, and the pre-open session was restructured on 7 September 2026. The market timings guide and the pre-open rules article carry the minute-by-minute timetable.

The new timetable is already under review. After feedback on expiry-day settlement under the auction, SEBI issued a consultation paper on 12 September 2026. It offers two settlement methods — a blended VWAP of the last 30 minutes of continuous trading and the 10-minute auction, or, as an interim step, the continuous-trading VWAP alone — and two timetables: continuous trading to 3:30 pm with derivatives open until 3:45 pm, or the auction from 3:15 pm with derivatives closing at 3:30 pm. Comments close on 3 October 2026. Until a circular follows, the 3:40 pm close and auction-based settlement stand.

A sixth index contract. On 12 August 2026 NSE listed futures and options on the NIFTY India FPI 150 index (NIFTYFPI): monthly contracts only, cash-settled, with a lot of 1,100 and expiry on the last Tuesday of the month. That is why the lot table above has six rows where older guides show five.

The finfluencer rules are part of the same story

SEBI paired the trading measures with rules about who may talk about trading, and how.

Under the SEBI (Intermediaries) Amendment Regulations 2024 and a circular dated 22 October 2024, SEBI-regulated entities, market infrastructure institutions and their agents cannot maintain any association — money changing hands, client referrals, or IT-system integration — with unregistered persons who give securities advice or make performance and return claims. Existing arrangements had to be wound down within three months. The practical effect: brokers can no longer sponsor, pay or route clients to unregistered tip-sellers.

A clarification circular dated 29 January 2025 then drew the line for education. A person engaged purely in investor education may operate without registration only if they do not use live or recent market prices. That circular set the lag at three months; a SEBI circular dated 8 May 2026 cut it to thirty days from 1 July 2026, and set the same thirty-day lag for exchanges, depositories and intermediaries that share price data for education. In August 2026 SEBI also warned investors about “live trading” sessions on social media, reminding them that live market data may be shared only for the orderly functioning of the market or to meet regulatory requirements.

This is why Gale publishes the way it does — descriptive exchange data on reference pages like the ban list and expiry calendar, and educational explanation like this article and the technical analysis guide, with no calls, no strikes and no trade setups. The compliant lane for unregistered publishers is description and education, and it is the honest lane anyway: the loss studies above are a strong argument that what retail traders lack is not another tip.

What SEBI has not done

Two things the rules did not do are worth stating plainly, because headlines often imply otherwise.

Retail F&O is not banned. None of the measures above restricts who may open an F&O account.

There is no suitability gate — yet. SEBI has publicly discussed suitability or appropriateness criteria that could link F&O access to a trader’s direct and indirect equity exposure (cash holdings, equity mutual funds, PMS), and its August 2026 study found loss rates falling steadily as equity portfolios grow. But as of 24 September 2026 it has issued no consultation paper on suitability, and no rule is in force. Separately, market speculation in September 2025 about phasing out weekly contracts entirely in favour of monthly expiries has not become regulation. Treat both as open questions, not settled facts; this page is updated when the rules move.

FAQ

Is F&O trading banned for retail investors in India?

No. SEBI has raised contract sizes, cut weekly expiries, tightened margins and capped positions, but any eligible investor can still trade equity derivatives. The measures raise the capital and cost thresholds rather than restricting entry.

What is the minimum amount needed for options trading now?

There is no single figure. An option buyer must pay the full premium upfront — a few hundred to many thousands of rupees per lot depending on the strike and expiry. Futures and short options require margin on a contract now worth Rs 15–20 lakh notional, so sellers typically need well over a lakh in margin per lot. Beginners comparing this with delivery investing should start with how to start investing in the Indian share market.

Why did weekly expiries reduce?

SEBI’s stated purpose was investor protection and market stability: daily expiries across seven indices had concentrated retail activity into cheap, short-dated options — the segment where its studies found losses were heaviest. Since 20 November 2024, only NIFTY on NSE and SENSEX on BSE have weekly contracts; since 1 September 2025 they expire on Tuesdays and Thursdays respectively.

Do these rules apply to commodity derivatives on MCX?

The measures described here come from SEBI’s equity derivatives framework and apply to the equity index and stock F&O segment. Commodity derivatives are regulated under separate frameworks with their own position limits and expiry rules; check the specific MCX and SEBI commodity circulars before assuming any crossover.

Where can I check current lot sizes, expiries and the ban list?

Gale’s F&O hub links reference pages generated from daily exchange files: lot sizes for every F&O stock and index, the expiry calendar and the daily ban list. For unfamiliar terms in this article, the stock market terminology glossary covers margin, open interest, ELM and the rest.

Official circulars and studies

Circulars, exchange files and linked Gale pages were checked on 24 September 2026. SEBI moves often in this segment; verify effective dates against the primary circular before relying on any secondary summary, including this one.

What to weigh

The rules changed the price of participation far more than the probability of success. In FY2025, as the framework was phased in, 91% of individual traders still lost money, and aggregate losses grew. In FY2026, 87.7% still lost money; aggregate losses fell because fewer people traded, while the average loss per trader edged up. Anyone weighing equity derivatives after these changes is really weighing four things: whether their capital is proportionate to a Rs 15–20 lakh minimum contract exposure; whether their purpose is hedging an existing portfolio or standalone speculation, because the rules price those activities very differently now; whether their information sources survive the finfluencer rules, since advice from unregistered sellers of tips is precisely what SEBI has been cutting off; and whether the documented odds — published repeatedly by the regulator itself — describe an activity that suits their finances at all. The circulars answer what changed. Only the loss studies answer why.

Gale.in is not a SEBI-registered investment adviser or research analyst; this article is education and description, not investment advice.

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