Former Finance Commission chairman and Institute of Economic Growth president N.K. Singh on Thursday firmly rejected allegations questioning the government's methodology for calculating India's Gross Domestic Product (GDP), describing such claims as “completely baseless.” The remarks came in response to concerns raised by former Finance Secretary Subhash Chandra Garg over the credibility of the revised GDP calculations.

Why the Methodology Change Is Standard Practice

Singh argued that periodically revising the base year and updating the GDP calculation framework is a routine exercise undertaken by economies worldwide. “Such revisions are intended to capture changes in the structure and performance of the economy more accurately,” he said. He emphasised that the latest changes should not be interpreted as any attempt to manipulate economic data, but rather as an effort to make GDP estimates more robust and comprehensive.

According to Singh, the revised methodology now captures a broader range of economic segments and incorporates more granular data, enabling a more effective reflection of real developments across the economy. Notably, base-year revisions are standard practice among major economies — India has undertaken several such exercises since independence, each aimed at keeping national accounts aligned with structural shifts in economic activity.

India’s GDP Growth and Credit Rating Upgrade

Singh also highlighted what he called a “happy congruence” between two significant developments: the latest GDP estimates showing the Indian economy growing at 7.8 per cent under the new methodology, and India regaining an ‘A’ credit rating after a gap of 38 years. India had held an ‘A’ rating in 1988 but lost it in 1991, and has now returned to that category in 2026 — a development he described as “a moment of celebration.”

He argued that the simultaneous improvement in the sovereign credit rating and the strong GDP growth estimate together reflect the underlying strength and resilience of the Indian economy, lending external validation to the revised figures.

The Garg Controversy and Broader Debate

The exchange follows public remarks by former Finance Secretary Subhash Chandra Garg, who had raised questions about the GDP calculation methodology, suggesting the numbers may not accurately represent economic ground realities. Critics of the revised methodology have argued that the base-year shift and new data sources could inflate headline growth figures, making it harder to compare performance across time periods.

Singh’s rebuttal positions the debate squarely within the technical domain, insisting that any concerns about manipulation are unfounded. However, the controversy reflects a broader tension in India between official macroeconomic data and on-the-ground economic indicators — a debate that has persisted since the last major GDP methodology revision.

What Comes Next

With India’s credit rating upgrade and the 7.8 per cent growth estimate now in the public domain, attention will turn to whether independent economists and international institutions corroborate the revised figures. The debate over GDP methodology is unlikely to be fully resolved without greater transparency in the underlying data sources and a detailed technical explanation from the government’s statistical authorities.