Discuss the rationale for India's transition from WPI to PPI. How does it align with international best practices?

Q. Discuss the rationale for India's transition from WPI to PPI. How does it align with international best practices? (15 marks, 250 words)

The Office of the Economic Adviser, DPIIT, on rebasing the Wholesale Price Index (WPI) to 2022-23, has launched Producer Price Indices (PPI) and announced WPI's phase-out after a five-year parallel run [1]. This marks a methodological shift toward a producer-side inflation gauge aligned with global norms.

Rationale for the transition - Conceptual soundness: WPI mixes trade margins and indirect taxes, distorting the true price signal; PPI captures ex-factory prices before tax, better suited for GDP deflators and core inflation [2]. - Coverage of services: WPI excludes services; the new Service PPI covers seven services (banking, insurance, railways, telecom, etc.), reflecting a services-led economy [1]. - Updated, expanded basket: items expanded from 697 to 957, with crude petroleum reclassified and solar, wind, nuclear electricity added, mirroring the energy transition [2]. - Continuity for contracts: the five-year overlap lets price-escalation clauses in PSU and infrastructure contracts adjust smoothly [1].

Alignment with international best practices - PPI is the IMF/OECD standard, used by the US, UK and EU, improving cross-country comparability [1]. - It follows the IMF Producer Price Index Manual and SNA framework [2]. - Coordinated rebasing of CPI, GDP and IIP to 2022-23 signals a modernised, credible statistical system.

By replacing a decade-old, tax-distorted measure with a globally benchmarked producer index, India strengthens the analytical backbone for evidence-based monetary and fiscal policy, advancing the goal of a robust, trusted national statistical architecture.

(~250 words)

Sources: 1. Press Release on New Series of WPI and Producer Price Indices with Base Year 2022-23, PIB (2026) — PPI launch, Service PPI (7 services), five-year phase-out, IMF/global-standard alignment, price-escalation clauses. 2. Base Year of Wholesale Price Index Revised from 2011-12 to 2022-23, PIB (2026) — rationale for producer-side index, basket expansion (697→957), energy-item additions, IMF PPI Manual/SNA basis.