The Harshad Mehta Scam of 1992: How It Worked and What It Changed

For about eighteen months at the start of the 1990s, the Bombay stock market behaved as though gravity had been repealed. Cement and engineering shares that had changed hands for a few hundred rupees were quoted in the thousands. Brokers who had been minor figures a few years earlier were on magazine covers, photographed beside imported cars. Then, in April 1992, a newspaper report explained where a large share of the money had actually come from — and the market spent the next year giving most of the gains back.

The 1992 securities scam is the most consequential financial episode in modern Indian market history. Not mainly because of its size, though the size was extraordinary, but because of what it exposed: a settlement system running on paper and trust, banks whose government-securities books nobody could reconcile in real time, and a market regulator with no statutory teeth. Nearly every piece of infrastructure an Indian investor now takes for granted — a statutory SEBI, screen-based trading, shares held electronically, settlement in a day or two — exists in its present form partly because of what came to light that April.

The market this happened in

Context matters, because the scam was only possible in a very specific kind of market. In 1991 India had come close to defaulting on its external obligations; the government pledged gold to raise foreign exchange, and the reform programme that followed began dismantling decades of licensing. In 1992 the office of the Controller of Capital Issues was abolished, which meant companies could price their own share issues for the first time instead of having the price set by a government official. Foreign institutional investors were allowed in. A generation of savers who had only ever known bank deposits started reading share prices.

The market they were entering was pre-modern. Trading happened by open outcry in a ring on Dalal Street, with prices relayed outward by telephone and rumour. Shares existed as physical paper certificates, transferred by signed deeds that could be lost, forged or simply rejected as a bad delivery. Settlement worked on an account period — trades were netted over a fortnight-style cycle and positions could be carried forward through the badla system, which was leverage by another name. There was a regulator, SEBI, set up in 1988, but it had no statutory powers and could not compel much of anything.

The mechanism: ready-forward deals and bank receipts

The scam did not happen in the stock market. It happened in the government bond market, and the stock market was where the proceeds went.

Indian banks were, and are, required to hold a set proportion of their assets in government securities — the statutory liquidity ratio, checked on reporting dates. Banks therefore lent and borrowed short-term against those securities constantly, using ready-forward deals: sell a bond today, with an agreement to buy it back a few days later at a slightly higher price. Economically this is a collateralised loan. It is an ordinary, useful instrument that money markets everywhere rely on.

Two features of how it was done in India turned it into a vulnerability. First, banks did not deal directly with each other. Brokers stood in the middle, matching a bank that wanted cash with a bank that had it — and crucially, both the money and the securities moved through the broker rather than between the two banks. That gave the intermediary temporary control of large sums that neither counterparty was watching closely.

Second, the securities themselves often did not move at all. Instead of delivering bonds, the selling bank issued a bank receipt — a written acknowledgement that it held the stated securities on the buyer's behalf and would deliver them on the reverse leg. It saved enormous paperwork. It was also, in practice, unverifiable by the receiving bank. A bank receipt was a promise about the existence of an asset held somewhere else.

The abuse followed directly. Two small banks issued bank receipts that were not backed by any securities at all. Money left the lending bank against paper representing nothing, passed through the broker's accounts, and went into shares. Some deals were reportedly constructed between banks that had no idea they were counterparties to each other.

While it lasted the loop was self-reinforcing. Money borrowed from the banking system pushed share prices up. Rising share prices made the positions look profitable and made them better collateral. Paper profits justified borrowing more. The most-quoted emblem of the period is Associated Cement Companies, whose share price is generally described as running from a couple of hundred rupees to somewhere near ₹9,000 inside about a year — a move that had far more to do with the flow of borrowed money than with cement demand.

The scale, and how to think about it

Two official inquiries followed: a Reserve Bank of India committee under R. Janakiraman, which reported in instalments through 1992 and 1993, and a Joint Parliamentary Committee, which reported in 1993. The figure that emerged for the scale of the irregularities in the securities transactions of banks and financial institutions is usually cited at around ₹4,000 crore, with some accounts putting the wider exposure higher. Treat the number as an order of magnitude rather than an audited total — that is how the committees themselves framed much of it.

To give it a sense of proportion: this was a country whose foreign-exchange reserves, a year earlier, had fallen to a few weeks of import cover, and which had physically shipped gold abroad as collateral. Against that backdrop, a single broker-centred network moving sums comparable to a mid-sized bank's balance sheet through the payments system, undetected, was not a rounding error. It was a solvency question for parts of the banking sector.

Almost every individual component was legitimate. Ready-forward deals were legitimate. Bank receipts were legitimate. Brokers acting as intermediaries was legitimate. What was not legitimate was issuing receipts for securities that did not exist — and no part of the system had been designed to check.

Exposure and collapse

The story broke in April 1992 in The Times of India, in reporting by the journalist Sucheta Dalal that set out the bank-receipt mechanism in public for the first time. What followed was a reversal in the mechanics of the rally itself. Banks stopped doing ready-forward business through brokers while they tried to work out what they actually owned. The credit that had been financing equity positions was withdrawn. Positions had to be unwound into a market with no bids.

The Sensex had peaked around the 4,500 level in April 1992. Over the following months it lost something in the order of 40% of its value, and the April 1992 high was not seen again for years. Brokers defaulted. Several banks and financial institutions were left holding claims against parties whose assets were frozen. Confidence in the primary market, which had just been freed from price control, evaporated at exactly the wrong moment for a country trying to attract capital.

The important detail for an investor is that the retail shareholder who lost money in 1992 had almost no way of knowing what they were exposed to. Their portfolio's value depended on inter-bank reconciliation practices they had never heard of. That is a recurring feature of manias, not a quirk of this one.

The legal aftermath

Parliament passed the Special Court (Trial of Offences Relating to Transactions in Securities) Act in 1992, creating a dedicated court and appointing a Custodian with power to attach the assets of notified parties so that the claims of banks and institutions could be settled from them. That process ran for decades — the litigation over attached assets and tax claims outlasted most of the people who started it.

Harshad Mehta, the broker at the centre of the network, was prosecuted in multiple proceedings, convicted in at least one, and died in 2001 while in judicial custody with cases still pending. That is the extent of what should be said: it is a matter of court record, and it is not the interesting part. The interesting part is structural. One intermediary was able to route bank money into equities at that scale for that long because the system had no mechanism to notice.

What it changed

The reform programme that followed is the reason 1992 matters more than any other single event in Indian market history. Much of it was already under discussion; the scam turned discussion into legislation.

1. SEBI got statutory powers (1992)The SEBI Act converted an advisory body into a real regulator with power to register and inspect intermediaries, investigate, and penalise. It also inherited responsibility for the primary market from the abolished Controller of Capital Issues.
2. The NSE was createdIncorporated in 1992 and beginning trading in 1994 — the wholesale debt segment first, equities in November — the National Stock Exchange replaced the trading ring with anonymous, screen-based, order-driven matching on terminals across the country. Spreads narrowed and access stopped depending on knowing someone in Bombay.
3. Shares went electronicThe Depositories Act of 1996 enabled dematerialisation; NSDL was set up in 1996 and CDSL in 1999, and demat was made compulsory in stages over the following years. Physical certificates, forged transfer deeds and bad deliveries largely disappeared — and so did the idea of a receipt standing in for an asset.
4. Settlement was compressedThe account-period system with carry-forward gave way to rolling settlement; badla was discontinued in 2001; the cycle shortened to T+2 in the early 2000s and to T+1 in the 2020s. Shorter settlement means far less time for an unbacked promise to circulate.
5. Central clearing arrivedClearing corporations became the counterparty to every trade, backed by margins and a settlement guarantee fund. Your counterparty's failure stopped being your problem.
6. Bank supervision tightenedThe RBI restricted how banks could use brokers in securities transactions, tightened rules around portfolio-management schemes, strengthened audit requirements, and set up the Board for Financial Supervision in 1994.

The transferable lessons

It is easy to read 1992 as a story about one broker and a vanished era of paper certificates. The durable lessons are about how any investor should hold risk.

• A price driven by flows has no floor. When a share rises because money is being pushed into it rather than because earnings are growing, there is no valuation level at which buyers reappear. The reversal is not proportional to the rise; it is faster.
• Leverage you cannot see is still your risk. The retail investor of 1992 was, unknowingly, holding a leveraged bank-funded position. Ask what is financing the move you are participating in.
• Concentration is how a market fall becomes a personal disaster. Investors who owned the two or three story stocks of the rally lost far more than those who were spread across the market. That is the whole argument for diversification, and it holds in every cycle.
• Know your drawdown tolerance before it is tested. A fall of roughly 40% at the index level, with far worse in the hot names, is the kind of number worth looking at in advance — see maximum drawdown and our guide to portfolio risk.

The other lesson is more optimistic. India's response to 1992 was to build better plumbing rather than to retreat from markets, and the result is a market that is now among the world's largest and, mechanically, one of its better-run. If you want the longer arc, read our history of the Indian stock market, or the survey of India's biggest market crashes for how 1992 compares with what came after.