New GDP Methodology

Why in News?

Recently, the Ministry of Statistics and Programme Implementation (MoSPI) provided clarification on the latest GDP estimates for Q1 of 2026-27.

• Double Deflation – In this method, Gross Output and Intermediate Consumption are each independently adjusted to account for changes in price levels.
• Real GVA = Real Gross Output − Real Intermediate Consumption
• It provides a more accurate representation of the real value added by an industry, as it separately considers both output and input prices.
• Negative GVA Deflator - A negative Gross Value Added (GVA) deflator does not necessarily indicate a decline in manufacturing prices.
• This situation may arise when input prices increase at a faster rate than output prices.
• Example – Suppose:
  • Output price ↑ 5%
  • Input price ↑ 10%
• Although both output and input prices increased, input costs rose at a higher rate than output prices.
• As a result, Real Gross Value Added (GVA) may increase at a faster rate than Nominal GVA.
• Consequently, the implicit GVA deflator may become negative.

A negative deflator does not necessarily indicate declining prices.

• GDP Revision – This change represents a significant issue in data interpretation.

• Factors Contributing to the Change
• The revision occurred due to the following factors:
  • Change in base year
  • Improved data sources
  • New IIP data
  • Introduction of PPI
  • Methodological improvements
  • Successive revisions as better data became available
• GDP Deflator vs CPI vs WPI

• Difference between nominal and real GVA
• For example - Mining Sector: Increase in Nominal GVA but Decrease in Real GVA

• Real Gross Value Added (GVA) reflects the quantity effect.
• Nominal Gross Value Added (GVA) incorporates both quantity and price effects.
• Therefore, it is possible for output to decline while nominal GVA increases if price levels rise sufficiently.
• Statistical discrepancy - Gross Domestic Product (GDP) may be estimated using several primary approaches:
  • Production approach versus Expenditure approach
• In principle, GDP calculated by the production approach should equal GDP calculated by the expenditure approach.
• However, discrepancies may occur due to the following factors:
  • Use of different data sources
  • Timing differences in data collection
  • Incomplete or missing information
  • Measurement errors or inconsistencies
  • Preliminary status of quarterly GDP estimates
• The resulting difference is recorded as a statistical discrepancy.

Reference

DD India | MoSPI Explains GDP Methodology