SEBI Rules for F&O Trading: What Changed and Why It Matters
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.
This guide explains how SEBI’s rules impact options trading in India: every 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 as of 17 August 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 first full year after 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.
Those two studies frame everything below. Participation fell after the rules changed, but the odds for those who stayed barely moved. 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 17 August 2026, the current index lot sizes are:
| Index | Current lot size |
|---|---|
| NIFTY | 65 |
| BANKNIFTY | 30 |
| FINNIFTY | 60 |
| MIDCPNIFTY | 120 |
| NIFTYNXT50 | 25 |
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, covering all 208 stocks and 6 indices currently in the segment.
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. 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 on Wednesday can demand materially more margin on expiry morning. 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. The next NIFTY weekly expiry is 18 August 2026, a Tuesday, and the monthly stock F&O cycle now ends on the last Tuesday of the month — next on 29 September 2026. Both dates come from NSE contract files ingested on 17 August 2026. 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. 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.
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, with exchanges examining breaches through surveillance deposits, penalties and expiry-day scrutiny. 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. On trade date 18 August 2026, the ban list holds BANDHANBNK, LICI, MANAPPURAM and SAIL — the live ban list page is updated from exchange files each trading day.
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: security prices may be referenced only with a lag of at least three months. Naming a stock alongside its recent price is treated as an implicit recommendation, whatever the disclaimer says.
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. Every measure above changes contract economics, margins, expiry frequency or position limits. None restricts who may open an F&O account.
There is no suitability gate — yet. As of August 2026, 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), with a consultation paper expected, but 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 (NSE, Tuesdays) and SENSEX (BSE, Thursdays) have weekly contracts.
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 all 208 F&O stocks and 6 indices, 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
- SEBI circular, 1 October 2024: six measures for the index derivatives framework
- SEBI circular, 26 May 2025: expiry days restricted to Tuesday or Thursday
- SEBI circular, 1 September 2025: intraday position limits framework
- SEBI press release, 23 September 2024: updated F&O loss study, FY22–FY24
- SEBI study, 7 July 2025: derivatives versus cash market after the measures
- SEBI circular, 22 October 2024: association with unregistered advice-givers
- SEBI circular, 29 January 2025: clarifications, including the three-month price-data lag for education
Circulars, exchange files and linked Gale pages were checked on 17 August 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, not the probability of success. After a year under the new framework, 91% of individual traders still lost money, and aggregate losses grew even as one in five traders left. 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 twice 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.