In 1995, a government securities dealer in Mumbai picked up a telephone, called three brokers, haggled over a price nobody else could see, and settled the trade by physically delivering a paper certificate to the buyer's office. The government of India — borrowing hundreds of thousands of crores annually — had no idea whether the price it paid to borrow was fair, because the market that priced its debt operated on phone calls, personal relationships, and opaque broker networks. That a country running one of the world's largest sovereign borrowing programmes had no electronic price discovery mechanism was not an oversight. It was the inherited architecture of a system built for a closed economy, and dismantling it would take two decades, three platforms, one central counterparty, and a fundamental rethinking of who should be allowed to own government debt.
See also: Trading Infrastructure: NDS, SGL, Primary Dealers | SLR, CRR & the Liquidity Adjustment Framework | Government Securities & Money Market
Why did the old system fail?
Before 2002, government securities traded through a bilateral telephone market. Banks called brokers, brokers called other banks, and prices were whatever the two parties agreed upon. The Subsidiary General Ledger — the register where the RBI recorded ownership of G-Secs — required physical transfer forms. Settlement was manual, slow, and vulnerable to fraud.
The consequences were structural. Without a visible order book, the government had no benchmark yield curve. Without a benchmark yield curve, corporate bonds could not be priced. Without transparent pricing, insurance companies, pension funds, and mutual funds had no reliable way to mark their portfolios to market. The entire fixed-income ecosystem was hobbled by the absence of a single electronic platform where prices could form in the open.
The 1999 Primary Dealer guidelines attempted to impose discipline on this bilateral world, requiring primary dealers to follow specific transaction protocols:
"Reserve Bank of India (DBOD for banks and FID for All India Financial Institutions) have been issuing guidelines on various aspects relating to the securities transactions by entities under their jurisdiction."
But guidelines alone could not fix a structural problem. The market needed infrastructure.
What changed with the Negotiated Dealing System in 2002?
The Negotiated Dealing System, launched in February 2002, was the RBI's first attempt to move G-Sec trading onto screens. NDS allowed banks and primary dealers to submit electronic orders and report trades in real time, replacing telephone negotiations with a system that at least captured deal information centrally. The platform also hosted the auction mechanism for primary issuances, meaning the government could finally conduct its borrowing programme electronically.
NDS was a necessary first step, but it had a critical limitation: trades were still bilaterally negotiated. Two parties agreed on a price and reported it through NDS, but there was no anonymous order book where buyers and sellers could see competing bids and offers. Price discovery remained a function of relationships rather than competition.
"The Negotiated Dealing System (NDS) for electronic dealing and reporting of transactions in government securities was introduced in February 2002. Subsequently, on August 1, 2005, RBI introduced the anonymous screen based order matching module on NDS, called NDS-OM."
— NDS-OM Counterparty Confirmation circular, August 2005
Why did India need a central counterparty?
When two banks traded a government security bilaterally, each bore the risk that the other would fail to deliver. In a market where daily trading volumes ran into thousands of crores, a single settlement failure could cascade. The Clearing Corporation of India Limited (CCIL), established in 2001 and operational from 2002, solved this by interposing itself between every buyer and every seller. CCIL guaranteed settlement: if one party defaulted, CCIL's settlement guarantee fund absorbed the loss.
This was not a minor technical upgrade. Central counterparty clearing transformed the G-Sec market from a web of bilateral credit exposures into a hub-and-spoke model where every participant's only counterparty risk was CCIL itself. The FIMMDA Code of Conduct for NDS-OM and OTC markets issued in December 2012 codified the behavioural standards for this new infrastructure:
"FIMMDA in co-ordination with RBI and market participants has developed and implemented a Code of Conduct for users of NDS-OM and other systems."
The existence of CCIL also made possible the shift from T+1 to T+0 settlement cycles, and eventually enabled foreign portfolio investors to participate in the market without maintaining bilateral credit lines with Indian banks.
How did NDS-OM transform price discovery?
The Order Matching segment — NDS-OM — went live on August 1, 2005, and it represented the real revolution. Unlike the original NDS, which merely reported bilateral deals, NDS-OM was an anonymous, order-driven platform. Any participant could place a bid or an offer, and the system matched orders automatically on price-time priority. For the first time, the Indian government bond market had a live, transparent order book.
The impact on price discovery was immediate. Bid-ask spreads narrowed because traders could see competing quotes. The yield curve became visible in real time. And the benchmark 10-year government security — the reference rate for the entire Indian debt market — finally had a price determined by open competition rather than telephone negotiation.
Access to NDS-OM expanded steadily. The November 2007 circular on CSGL access to NDS-OM opened the platform to entities holding securities through constituent SGL accounts. The November 2011 expansion broadened direct access further:
"With a view to widening the secondary market in Government Securities to more number of participants, it has been decided to extend direct access to NDS-OM."
By October 2016, even foreign portfolio investors could trade directly on NDS-OM, moving from the OTC market to the same anonymous platform used by domestic institutions. And in July 2016, the RBI opened the NDS-OM web module to demat account holders, taking the first step toward retail access to the sovereign bond market.
What role do Primary Dealers actually play?
Primary Dealers are the structural foundation of the government's borrowing programme. They are required to bid at every G-Sec auction, underwrite a minimum portion of each issuance, and make two-way markets in the secondary market so that other investors can buy and sell at any time. Without them, the government would face the risk of failed auctions — an outcome that would immediately spike borrowing costs.
The operational guidelines for Primary Dealer business issued in July 2007 established the framework, requiring minimum net owned funds and mandating that PDs maintain adequate risk management systems. A May 2011 RBI consultation paper on proposed guidelines for PD authorisation explained the rationale plainly:
"The objective of the proposed review of existing guidelines is to make the PD authorisation policy more transparent and ensure that the new PDs have sound capital, adequate experience/expertise in the Government Securities market and prudent risk management measures to enable them to meet their roles and obligations in the Government debt market in an effective manner."
The obligation runs both ways. When the Retail Direct scheme launched in 2021, it was the Primary Dealers who were drafted as market makers on the retail platform, ensuring that individual investors could actually find a counterparty when they wanted to trade.
Can ordinary Indians actually buy government bonds now?
For decades, the answer was effectively no. Government securities were a wholesale market: minimum lot sizes, institutional-only platforms, and settlement through SGL accounts that only banks and primary dealers could access. The non-competitive bidding scheme reserved up to 5 percent of each auction for smaller investors, but participation remained negligible because the process was cumbersome and required routing through a bank.
The RBI Retail Direct scheme, announced in February 2021 and launched by the Prime Minister on November 12, 2021, changed the architecture entirely. Any individual could open a Retail Direct Gilt (RDG) account directly with the RBI and access both primary auctions and secondary trading on NDS-OM. The RBI's own press release on the scheme described it as:
"A one-stop solution to facilitate investment in Government Securities by individual investors... The 'Online portal' will also give the registered users access to primary issuance of Government securities and access to NDS-OM."
In May 2024, the RBI launched a dedicated Retail Direct mobile application, removing the need for even a computer. The gap between a retail investor and a government bond — once requiring a bank intermediary, a demat account, and institutional-grade infrastructure — had been reduced to a smartphone app.
What did the November 2025 directions change?
On November 28, 2025, the RBI issued a sweeping set of entity-specific Investment Portfolio Directions covering commercial banks, NBFCs, urban co-operative banks, rural co-operative banks, regional rural banks, payments banks, small finance banks, and local area banks. Each entity type received its own direction, replacing the earlier consolidated framework.
The significance for the bond market infrastructure is twofold. First, the directions explicitly recognise NDS-OM as the default price discovery mechanism: transactions on NDS-OM are presumed to be at fair value, while transactions outside it must justify their pricing. Second, the directions mandate that every regulated entity trading government securities must adhere to the FIMMDA code of conduct for NDS-OM and OTC markets, embedding the platform's behavioural standards into prudential regulation across all entity types.
The October 2024 Access Criteria for NDS-OM Directions had already consolidated and updated the eligibility rules, replacing the patchwork of circulars issued since 2007. Together, these two regulatory actions — access criteria in October 2024, investment portfolio directions in November 2025 — represent the most comprehensive overhaul of the G-Sec trading framework since NDS-OM itself launched in 2005.
The chain from telephone to smartphone
The transformation follows a legible regulatory chain. Each reform solved the problem created by the previous system's limitations:
Phone market (pre-2002) produced opaque pricing and settlement risk. NDS (2002) eliminated paper-based reporting but retained bilateral negotiation. CCIL (2002) removed counterparty risk but did not change how prices formed. NDS-OM (2005) created anonymous price discovery but restricted access to institutions. CSGL and web access (2007-2016) widened the participant base. Retail Direct (2021) opened the market to individuals. Entity-specific directions (2025) embedded NDS-OM as the recognised pricing benchmark across all regulated entities.
The October 2025 issuance calendar for the second half of FY 2025-26 captures what that infrastructure now supports: scheduled weekly auctions across tenors from 3 to 50 years, amounts running to Rs 32,000 crore per week, and a market where institutional and retail investors alike can plan their participation because the calendar, the platform, and the settlement mechanism are all transparent, electronic, and accessible.
Twenty-three years after NDS went live, the G-Sec market that once ran on telephone calls and paper certificates now processes anonymous electronic trades, settles through a central counterparty, and is open to anyone with a smartphone and an Aadhaar number. The infrastructure is not finished — cross-border settlement interoperability, longer trading hours, and deeper retail participation remain works in progress — but the architecture is in place, and the regulatory chain that built it is among the most methodical infrastructure build-outs in Indian financial regulation.
Last updated: April 2026