What is a Bulk Deposit?
In the eyes of the Reserve Bank of India, not all deposits are created equal. A 'bulk deposit' is defined as a single rupee term deposit of a large amount. As of a June 2024 revision, this threshold is set at ₹3 crore and above for most major commercial
and small finance banks. Any single fixed deposit below this amount is considered a 'retail' deposit. This distinction is crucial because it allows banks to treat these two categories of money very differently, particularly when it comes to the interest rates they offer. The fundamental reason for this separation is risk. Bulk deposits, often placed by corporations, institutions, or high-net-worth individuals, are more sensitive to interest rate changes and can be moved from one bank to another in search of a better return. This makes them a less stable source of funding for banks compared to the accumulated savings of many small depositors.
The New 'October 1' Mandate
The rule grabbing headlines is a directive from the RBI that kicks in on October 1, 2026. It's less about changing the definition of a bulk deposit and more about enforcing transparency and fairness in how banks handle them. Under the new mandate, banks must publish their interest rates for bulk deposits on their websites every business day by 10:00 AM, with a small grace period. The rate offered to any customer for a specific type of bulk deposit must be exactly what is displayed. This prevents the old practice of banks negotiating special, off-the-books rates for preferred clients. The move was prompted partly by regulatory scrutiny into cases where preferential rates were allegedly disguised as other expenses. In essence, the RBI is creating a more level playing field, ensuring that two customers depositing a similar large amount on the same day get the same interest rate.
Evidence: The Logic of Liquidity Risk
The core evidence behind treating bulk deposits differently lies in a concept called the Liquidity Coverage Ratio (LCR). The LCR is a regulatory requirement that ensures banks hold enough high-quality liquid assets to survive a 30-day period of significant financial stress. The RBI's framework assigns different 'run-off' rates to different types of deposits, which is an estimate of how likely that money is to be withdrawn during a crisis. Retail deposits from individuals are considered 'sticky' or stable, and thus have a low run-off rate. In contrast, large corporate deposits are seen as more flight-prone and are assigned a much higher run-off rate. This means a bank has to set aside more liquid, low-earning assets to back its bulk deposits, making them technically more costly and risky to hold. The new October rules actually give banks more flexibility to price these deposits based on their specific liquidity risk, allowing a bank to offer a slightly different rate for a ₹3 crore deposit from a stable corporate client versus one from a more volatile financial institution.
Impact on Banks and Depositors
For the average retail depositor with a regular fixed deposit, these new rules won't change much directly, other than providing greater overall transparency in the banking system. However, for high-net-worth individuals and corporate treasuries, the changes are significant. They can now see a clear, daily rate card from every bank, making the market for large deposits more competitive and transparent. For banks, the impact is twofold. On one hand, it increases competition and could compress margins, as they can no longer rely on private negotiations. On the other hand, it gives them legitimate, RBI-approved flexibility to price deposits based on genuine risk, using the LCR framework as a guide. Banks with a strong base of stable retail deposits (a high CASA ratio) are at an advantage, as they are less reliant on volatile bulk funds and can price them more strategically.
