In News:

India is undertaking a significant overhaul of its Gross Domestic Product (GDP) estimation framework as part of the revision of the national accounts series with a new base year of 2022–23. The reform, led by the Ministry of Statistics and Programme Implementation (MoSPI), proposes the elimination of the long-debated ‘discrepancies’ component from GDP estimates. The new GDP series is scheduled for release on 27 February 2026, while the revised back series is expected by February 2027.

Understanding ‘Discrepancies’ in GDP Estimation

GDP in India is compiled using two parallel approaches: the production (or income) approach and the expenditure approach. In theory, both should yield the same aggregate GDP. In practice, however, differences in data sources, coverage, valuation methods, and time lags lead to mismatches between the two estimates. This gap is recorded as ‘discrepancies’ under the expenditure-side GDP, which is conventionally considered less reliable than the production-side estimate.

A positive discrepancy indicates that production-side GDP exceeds expenditure-side GDP, while a negative discrepancy implies the opposite. These discrepancies have become increasingly volatile in recent years, particularly in the post-pandemic period.

Why Discrepancies Are a Concern

Large and fluctuating discrepancies obscure the true drivers of economic growth and complicate macroeconomic analysis. They also raise the likelihood of substantial future revisions in GDP growth rates, undermining confidence among policymakers, investors, and analysts.

For instance, in the July–September quarter, when real GDP growth was reported at 8.2%, discrepancies amounted to ?1.63 lakh crore, or 3.3% of GDP in real terms. In nominal terms, the discrepancy was –?2.46 lakh crore (–2.9% of GDP). Similar sharp swings were observed earlier, from –3% of GDP in January–March 2023 to 3.3% in April–June 2023.

The Proposed Reform: Integrating Supply and Use Tables

To address this issue, MoSPI plans to integrate Supply and Use Tables (SUTs) with the compilation of annual national accounts. SUTs map the supply of goods and servicesthrough domestic production and imports—against their uses, such as intermediate consumption, final consumption, capital formation, and exports. A key accounting constraint is that total supply must equal total use for each product.

By aligning GDP estimates with SUTs and the principles of the System of National Accounts (SNA), discrepancies are expected to be minimized in early estimates and eliminated entirely in final estimates once comprehensive data becomes available.

Expert Views and Persistent Challenges

Economists have broadly welcomed the move, noting that persistent discrepancies in past GDP revisions have weakened interpretability of growth trends. However, concerns remain regarding data quality, particularly the continued reliance on outdated survey data, in some cases more than a decade old. The complexity of estimating GDP in a large, diverse, and informal economy like India further compounds the challenge.

Additional issues include time lags in data availability, uneven quality of administrative records, and the risk that eliminating discrepancies may involve judgement-based adjustments, potentially affecting transparency.

Way Forward and Conclusion

For the reform to succeed, India must strengthen institutional capacity for national accounts compilation, regularly update surveys, especially in services and informal sectorsand enhance real-time administrative data systems. Methodological transparency and close alignment with international best practices under the SNA will be critical.

Overall, the proposed removal of ‘discrepancies’ represents a structural improvement in India’s GDP framework, promising cleaner, more consistent, and policy-relevant growth estimates—provided it is underpinned by robust data and transparent statistical practices.