Govt to replace WPI with Producer Price Index for future procurement contracts
The Department of Expenditure's Procurement Policy Division, Ministry of Finance, issued an office memorandum directing that Ministries and Departments use the Producer Price Index (PPI) instead of the Wholesale Price Index (WPI) for price-escalation clauses in future government procurement contracts.
The move is intended to align India's contract-pricing methodology with internationally accepted inflation-measurement practice, since most major economies use a producer price index rather than a wholesale price index for this purpose.
The existing WPI series will continue to be published alongside the new PPI for five years from the date of the PPI's release, after which WPI will be discontinued, giving contracting parties a transition window.
The Department for Promotion of Industry and Internal Trade (DPIIT) will be the publishing authority for the new PPI, continuing the role its Office of Economic Adviser already plays for WPI.
Wholesale Price Index (WPI) — Compilation and Base Year
The Wholesale Price Index measures the average change in prices of goods at the first point of bulk sale (wholesale level), before they reach retail. In India, WPI is compiled and released monthly by the Office of the Economic Adviser under the Department for Promotion of Industry and Internal Trade (DPIIT), Ministry of Commerce and Industry. The index covers only goods (not services) and excludes indirect taxes, making it a measure of producer-level and wholesale-level price movement rather than what a final consumer pays.
Key Details
- Base year of the outgoing series: 2011-12 = 100 (the seventh revision of WPI), comprising 117 Primary Articles, 16 Fuel and Power items, and 564 Manufactured Products
- The base year of WPI was revised from 2011-12 to 2022-23, approved in May 2026, with the revised series (alongside the new PPI) released from June 15, 2026
- WPI does not capture services and does not include indirect taxes, unlike the Consumer Price Index (CPI), which reflects retail prices inclusive of taxes and margins
- WPI has historically been used in India as a wholesale-inflation indicator and, until this policy shift, as the standard price-escalation index in long-term government contracts
The procurement policy shift builds directly on the WPI base-year revision exercise, using the same 2026 restructuring to introduce PPI as the new escalation benchmark rather than simply rebasing WPI and continuing to rely on it.
Producer Price Index (PPI) — Concept and Why It Differs from WPI
A Producer Price Index measures the average change in prices received by domestic producers for their output, tracked at the point of first commercial transaction — a methodology considered more precise than WPI because it follows a specific basket of goods and services from the producer's gate, avoiding double-counting of prices as goods move through successive stages of the wholesale chain (a limitation attributed to WPI). PPI is the internationally standard producer-side price measure used by most G20 economies and recommended by international statistical agencies for contract indexation.
Key Details
- WPI's "wholesale" framework can double-count price changes as a good passes through multiple intermediary transactions before reaching a wholesale buyer; PPI avoids this by fixing measurement at the producer's point of sale
- PPI compilation and publication responsibility rests with DPIIT (the same department responsible for WPI), continuing institutional continuity even as the index itself changes
- Internationally, producer price indices are the standard tool for indexing long-term public contracts, since they track cost pressures at the production stage that eventually feed into wholesale and retail prices
- The parallel five-year publication of WPI and PPI is designed to allow existing multi-year government and private contracts with WPI-linked escalation clauses to transition smoothly to the new index
The office memorandum operationalises the PPI specifically for procurement contracts — the day-to-day instrument through which the index change will affect billions of rupees in government spending — ahead of the broader public transition away from WPI.
India's Price Index Architecture — CPI, WPI/PPI, and the Inflation-Targeting Framework
India runs multiple price indices for different purposes: the Consumer Price Index (CPI), compiled by the National Statistical Office (NSO) under the Ministry of Statistics and Programme Implementation (MoSPI), is the index targeted by the Reserve Bank of India's Monetary Policy Committee under the flexible inflation-targeting framework; WPI/PPI, compiled by DPIIT, tracks producer- and wholesale-level prices used mainly for industrial and contract-pricing purposes, not for monetary policy.
Key Details
- Under the RBI Act, 1934 (as amended by the Finance Act, 2016, inserting Section 45ZA), the inflation target is set in terms of CPI (combined), not WPI — currently a target of 4%, with a tolerance band of +/-2%, reviewed periodically by the Central Government in consultation with the RBI
- The Monetary Policy Committee (MPC), constituted under Section 45ZB of the RBI Act, uses CPI inflation as its primary reference variable when setting the repo rate
- WPI/PPI inflation and CPI inflation can diverge significantly, particularly when fuel and manufactured-goods prices move differently from food and services prices, which carry a larger weight in CPI
- The shift to PPI for procurement does not change the RBI's inflation-targeting mandate, which remains CPI-based
The WPI-to-PPI transition affects government contract pricing and industrial-inflation measurement, but is a separate exercise from India's CPI-based monetary policy framework, illustrating the distinct roles multiple price indices play within the same economy.
- Directing authority: Department of Expenditure (Procurement Policy Division), Ministry of Finance
- Publishing authority for both WPI and the new PPI: Office of Economic Adviser, DPIIT, Ministry of Commerce and Industry
- Outgoing WPI base year: 2011-12 = 100 (seventh revision); revised to base year 2022-23, approved May 25, 2026
- New WPI (2022-23 base) and PPI series released: June 15, 2026
- WPI-to-PPI transition window: WPI continues publication for 5 years after PPI's release before discontinuation
- WPI 2011-12 basket composition: 117 Primary Articles, 16 Fuel and Power items, 564 Manufactured Products
- India's inflation target under the RBI Act (Section 45ZA, as amended by the Finance Act, 2016): CPI at 4%, band of +/-2%