Repo Rate Transmission
Repo Rate Transmission refers to the process by which changes in the RBI's policy repo rate flow through to bank lending rates, deposit rates, and ultimately to borrowing costs for households and businesses, with External Benchmark Linked Rate (EBLR) offering faster transmission than the older MCLR framework.
Monetary policy transmission — the mechanism by which a central bank's policy rate changes influence the real economy — has been a persistent concern for the RBI and its internal and external research. India's banking system has historically exhibited sluggish and incomplete pass-through from repo rate changes to lending rates, a structural weakness that constrained monetary policy effectiveness.
Under the base rate regime (pre-2016), banks were required to lend above a minimum base rate computed from cost of funds. Transmission was tepid: banks were slow to reduce base rates even when repo rates fell, partly because banks priced in sticky deposit costs and partly because of competitive and political economy considerations. The MCLR (Marginal Cost of Funds Based Lending Rate) regime introduced in April 2016 improved transmission somewhat by requiring banks to reset rates at least annually, but still exhibited significant lags.
The External Benchmark Linked Rate (EBLR) framework, made mandatory for floating rate retail loans (housing, auto, personal) and floating rate loans to Micro and Small Enterprises (MSEs) from October 2019, represented a step change. Banks were required to link their lending rates to an external benchmark — the repo rate, the 91-day T-bill rate, or the 182-day T-bill rate — and reset rates at least quarterly. This created near-immediate transmission: when the MPC cut repo rates in 2020 in response to the pandemic, EBLR-linked loan rates fell almost simultaneously.
However, EBLR also introduced asymmetric transmission concerns from a borrower perspective: loan rates rise swiftly during rate hike cycles (as in 2022–2023 when RBI raised repo rate by 250 basis points), while deposit rate increases lag, compressing bank NIMs in the transition. The RBI's periodic assessment of the transmission framework, published in Monetary Policy Committee minutes and the Monetary Policy Report, tracks both the lending rate pass-through and the deposit rate pass-through.
For banking sector equity investors, repo rate transmission speed affects net interest margin (NIM) dynamics. Banks with higher EBLR-linked loan book proportions tend to exhibit faster repricing of assets, which benefits NIMs in rate hike cycles and compresses them in rate cut cycles. The combination of loan book composition, deposit maturity profile, and CASA ratio determines the overall asset-liability sensitivity of individual banks.