RBI to Sharpen Focus on Neutral Rate in Wider Policy Modelling Push

The Reserve Bank of India will sharpen its effort in 2026-27 to estimate the economy’s neutral real rate of interest, adding a closely watched policy variable to a wider push to strengthen its analytical toolkit as it navigates a shifting growth-inflation mix.

According to the RBI’s 2025-26 Annual Report, published on Thursday, the Monetary Policy Department’s agenda for 2026-27 includes improving GDP and inflation forecasting, estimating potential output, reviewing the quarterly projection model, refining assessment of the natural real rate of interest, and widening sectoral credit analysis to capture non-bank funding channels. Together, those goals point to a central bank trying to improve its read on underlying demand, financial conditions and monetary transmission.

The exercise matters because the neutral rate offers policymakers an internal gauge of whether real interest rates are restraining activity or still providing support to growth.

Policy Anchor in Focus
The renewed focus on the neutral rate comes as the RBI leans more heavily on model-based policy analysis amid a shifting growth-inflation backdrop and persistent global uncertainty.

The natural real rate of interest is the inflation-adjusted policy rate consistent with an economy growing at potential without stoking excess price pressures. In practice, a real policy rate above neutral is restrictive, while one below it is accommodative.

Unlike the repo rate, however, the neutral rate cannot be observed directly and must be inferred from statistical and macroeconomic models using variables such as inflation, output gaps, investment, savings behaviour, credit cycles and potential growth.

An RBI Bulletin article published in July 2024 said updated post-pandemic estimates suggested India’s neutral rate had moved higher alongside improving potential output growth. The study estimated the natural real rate in a range of 1.4%-1.9% for the Jan-Mar quarter of the financial year 2023-24, compared with earlier estimates of 0.8%-1.0% for the Oct-Dec quarter of the financial year 2021-22.

The paper said the upward shift was driven by stronger potential GDP growth after the pandemic recovery.

Structural Shifts Driving Estimates
The RBI study highlighted a set of structural forces that could keep the natural rate elevated over time, including stronger investment demand, demographic support, digitalisation, climate-transition spending and supply-chain diversification.

It also pointed to India’s large working-age population, a strengthening investment cycle, fiscal consolidation and infrastructure spending as forces that could lift long-term growth and capital demand, with artificial intelligence and digital adoption reinforcing that shift.

RBI researchers used variants of the Laubach-Williams framework, Kalman filtering and financial-cycle indicators to estimate the neutral rate, drawing on GDP growth, inflation, Treasury bill yields, bank credit and equity-market data.

The central bank, however, has repeatedly cautioned against treating any single estimate of the neutral rate as a hard policy signal, given the wide uncertainty bands and frequent revisions around such calculations.

The 2024 Bulletin article noted that policymakers should avoid relying solely on neutral rate estimates while calibrating monetary policy because structural shifts and post-pandemic distortions continue to complicate assessments.

Broader Forecasting Push
The annual report suggests the RBI is widening its policy lens rather than relying only on near-term inflation signals.

Work on forecasting models, potential growth and the quarterly projection model points to a broader effort to sharpen the RBI’s view on supply conditions, medium-term inflation risks and the economy’s underlying momentum.

That includes a closer look at non-bank funding channels, acknowledging that credit transmission now runs increasingly through NBFCs and market-based financing alongside banks.

A review of the quarterly projection model could, in turn, give policymakers a firmer medium-term anchor for judging the balance between growth support and inflation control.

Analytical Shift
The RBI’s renewed work on the neutral rate underscores a more forward-looking approach to policy as post-pandemic shifts in growth, savings, investment and financial intermediation complicate older assumptions about where interest rates should sit.

For markets, the exercise will not deliver a mechanical policy trigger. But it should offer a clearer guide to how the RBI judges the real stance of monetary policy—an increasingly important signal as inflation eases, growth remains resilient and the debate shifts from the level of rates to how restrictive policy really is.