Critically evaluate the coordination between DPIIT and MoSPI in maintaining India's key economic indices.

India's statistical indices sit with two custodians — the Office of the Economic Adviser (OEA) under DPIIT compiles the WPI and Index of Core Industries (ICI) [5], while MoSPI compiles GDP, CPI and IIP. The 2022-23 rebasing round tested this division, revealing effective technical coordination but uneven institutional cadence.

Strengths of the coordination

• Methodological dependence made explicit: weights of the revised ICI (2022-23) were derived directly from MoSPI's IIP 2022-23 weights [1], preventing two conflicting official pictures of industrial output.
• Synchronised base-year cycle: GDP, CPI and IIP series were rebased to 2022-23 through 2026 [3][4], with the ICI released on 20 July 2026 [1] — restoring comparability across the macro dashboard.
• Continuity safeguards: a back series from April 2023 to May 2026 and a linking factor for the old series were provided, keeping long time-series usable for analysts [2].
• Institutional forums: the Technical Advisory Committee for IIP base revision anchored the exercise in expert review rather than ad hoc departmental decisions [4].

Weaknesses and gaps

• Sequential lag: ICI cannot be rebased until MoSPI finalises IIP weights, so the core-sector index trailed the IIP revision by weeks, leaving overlapping months on different bases [1][3].
• Delayed revision cycle: both indices remained on the 2011-12 base for over a decade, understating post-pandemic capacity, energy mix and new sectors.
• Definitional divergence: the ICI had to independently correct double counting and revise its basket, including adding Iron Ore as a ninth core industry [2] — corrections that a jointly designed basket could have pre-empted.
• Upstream dependence on line ministries for provisional production data invites frequent revisions, and split custody fuels persistent public misattribution of the ICI to MoSPI.

Coordination is thus sound at the technical layer but reactive at the institutional layer. Placing rebasing on a fixed, statutorily notified cycle under National Statistical Commission oversight, with a standing DPIIT–MoSPI joint working group and a published release calendar, would convert episodic cooperation into predictable statistical governance — strengthening the credible, timely data base that evidence-driven policymaking requires.