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Relevance: GS Paper III — Indian Economy, Inflation & Macroeconomic Indicators Source: DPIIT / The Hindu, 2026

1 · What happened

The government has decided to slowly retire the old Wholesale Price Index (WPI) and replace it with a more modern Producer Price Index (PPI). The change will happen gradually over five years.

From June 15, the DPIIT (under the Ministry of Commerce and Industry) will start releasing a fresh WPI series with a new base year of 2022-23, in place of the old 2011-12 series. Along with it, the brand-new PPI series will also be launched. This is a major upgrade to how India measures inflation.

2 · What Is PPI and Why It’s Better Than WPI

Think of it this way: WPI only checked the price of goods at the wholesale stage — like prices in a mandi. PPI goes a step deeper: it checks prices that producers receive for what they sell, prices they pay for raw materials, and — most importantly — also covers services, which WPI completely ignored.

The New Framework
Three PPI Indices
DPIIT will release three separate indices: Output PPI (what producers earn), Trial Input PPI (what they pay for raw materials), and Services PPI (prices in service sectors).
Big Gain
Services Finally Counted
Services PPI will start with 7 sectors — banking, securities, insurance, pension funds, railways, air travel and telecom. Services make up more than half of India’s GDP, so this fills a huge gap.
Revised WPI Basket
Base Year 2022-23
Items tracked jump from 697 to 957. Solar, wind and nuclear are added to electricity. Crude oil and natural gas shift from “Primary Articles” to “Fuel & Power”. Weights now use Gross Value of Output.
Transition Risk
WPI is Locked in Contracts
Many business contracts use WPI to adjust prices over time (price escalation clauses). To avoid sudden disruption, WPI and PPI will run side-by-side for 5 years; only then will WPI be retired.

  • Better GDP measurement: PPI matches the IMF’s System of National Accounts (SNA), 2008. This helps convert nominal GDP (in current prices) into real GDP (in constant prices) more accurately — making India’s growth numbers cleaner.
  • Helps the RBI: PPI catches price pressures very early — in both goods and services — so the Reserve Bank of India gets a faster warning signal before inflation reaches consumers.
  • Global alignment: Most G20 countries use PPI, not WPI. The shift removes India’s “statistical outlier” tag and allows fair country-to-country comparison of inflation.
  • First release: WPI and Output PPI for May 2026 (provisional), plus a 37-month back series (April 2023 to April 2026) so analysts can compare past trends.

UPSC Value Box
WPI Wholesale Price Index — measures average price change of goods at the wholesale stage (before they reach the retail shop). Does not include services. Released by DPIIT.
PPI Producer Price Index — tracks prices received by producers (Output PPI), prices paid for raw materials (Input PPI), and prices in services (Services PPI).
CPI Consumer Price Index — tracks retail prices that consumers actually pay. Released by NSO under MoSPI. RBI uses CPI as the official inflation target (4% ± 2%).
DPIIT Department for Promotion of Industry and Internal Trade — under the Ministry of Commerce and Industry. Compiles and releases WPI; will now also compile PPI.
Ramesh Chand Working Group NITI Aayog Working Group chaired by Dr. Ramesh Chand. Recommended the shift from WPI to PPI.
NSC National Statistical Commission — autonomous body that oversees India’s statistical system. Endorsed the WPI-to-PPI transition.
GDP Deflator Indicator used to remove the effect of price changes and convert nominal GDP into real GDP. PPI is a more accurate deflator than WPI.
SNA 2008 IMF’s System of National Accounts, 2008 — global standard for national income accounting; India’s new PPI is aligned with it.

MCQ Practice Question
Q. With reference to inflation indices in India, consider the following statements:

  1. The Wholesale Price Index (WPI) and the new Producer Price Index (PPI) are both compiled and released by the Department for Promotion of Industry and Internal Trade (DPIIT).
  2. The Producer Price Index (PPI) being introduced in India will, for the first time, include services such as banking, insurance, railways and telecom along with goods.
  3. The Consumer Price Index (CPI), and not the Wholesale Price Index (WPI), is used by the Reserve Bank of India as the principal anchor for its inflation targeting framework.

Which of the statements given above is/are correct?
(a) 1 and 2 only    (b) 2 and 3 only    (c) 1 and 3 only    (d) 1, 2 and 3

Answer: (d) 1, 2 and 3

  • Statement 1 — Correct: Both WPI and the new PPI are compiled and released by the DPIIT, under the Ministry of Commerce and Industry. (Note: CPI is released by a different body — the NSO under MoSPI.)
  • Statement 2 — Correct: The new PPI series introduces a dedicated Services PPI, starting with seven sectors — banking, securities, insurance, pension funds, railways, air passenger and telecom. WPI never tracked services.
  • Statement 3 — Correct: Since the 2016 monetary policy framework, CPI (Combined) has been the RBI’s official inflation target (4% ± 2%), not WPI.

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