PRESS RELEASE ON NEW SERIES OF WHOLESALE PRICE INDEX, AND PRODUCER PRICE INDICES WITH BASE YEAR 2022-23

1. At a Glance

• Office of the Economic Adviser, DPIIT (Ministry of Commerce & Industry) has released the revised Wholesale Price Index (WPI) with base year 2022-23, replacing the 2011-12 series [S1][S3].
• Alongside WPI, three new Producer Price Indices have been launched — Output PPI (OPPI), Trial Input PPI (IPPI), and Service PPI — signalling India's planned transition from WPI to PPI in line with IMF best practice [S1][S2].
• Important for Prelims (price indices, ministries) and GS-III Mains (inflation measurement, statistical reforms).

2. Why in the News

• On 15 June 2026, DPIIT formally launched the WPI (2022-23) series and parallel PPI series [S1][S2].
• Approval was granted by competent authority on 25 May 2026; release scheduled for 15.06.2026, 12 noon [S2].
• Government announced WPI will be discontinued after a 5-year parallel-run with PPI [S1][S2].

3. Background & Evolution

• WPI in India tracks bulk transaction wholesale prices; first computed for week ending 10 January 1942 (historical Indian series).
• Base year revisions: 1952-53 → 1961-62 → 1970-71 → 1981-82 → 1993-94 → 2004-05 → 2011-12 → 2022-23 [S2].
• A Working Group under Dr. Ramesh Chand (Member, NITI Aayog) was constituted for the revision [S3].
• The shift toward PPI follows recommendations of the earlier Abhijit Sen Committee (2003) and B.N. Goldar Working Group, aligning with IMF/UN System of National Accounts norms [S2].

4. Core Static Facts

• Releasing Authority: Office of the Economic Adviser, Department for Promotion of Industry and Internal Trade (DPIIT), Ministry of Commerce & Industry [S1].
• Base Year: 2022-23 (earlier 2011-12) [S1][S2].
• Item basket expanded from 697 → 957 items [S3].
• Major Groups (WPI): Primary Articles, Fuel & Power, Manufactured Products.
• Structural shift: Crude Petroleum and Natural Gas moved from "Primary Articles" → "Fuel and Power" [S3].
• New energy items: Solar, Wind, Nuclear Electricity added under "Electricity" sub-group [S3].
• New Indices Launched:
• Output Producer Price Index (OPPI)
• Trial Input Producer Price Index (IPPI)
• Service Producer Price Index (Service PPI) — covering 7 services: Banking, Securities Transaction, Insurance, Management of Pension Funds, Railways, Air (Passenger), Telecom [S1][S2].
• Sunset clause: WPI to be released for 5 years alongside PPI, then discontinued [S1][S2].
• CPI (consumer side) is compiled by NSO/MoSPI — NOT to be confused with WPI/PPI.

5. Multi-Dimensional Analysis

Economic - Replaces a base year a decade old; better reflects post-2014 services growth, digital trade, and green energy [S3]. - PPI captures producer-side price changes ex-factory before tax — superior for measuring GDP deflators and core inflation vs WPI (which mixes taxes and trade margins) [S2]. - Important for price escalation clauses in government contracts (PSU, Railways, infra) — hence the deliberate 5-year overlap [S1].

Administrative / Statistical Governance - Coordinated rebasing across GDP, IIP, CPI — all moving to 2022-23 under MoSPI's national base-year revision exercise [S4]. - Inter-ministerial coordination: DPIIT (WPI/PPI), MoSPI (GDP/IIP/CPI), RBI (uses CPI for MPC target).

Scientific / Technological - New basket reflects renewables (solar, wind, nuclear) — aligns price statistics with India's energy transition and net-zero 2070 trajectory [S3].

Geopolitical / Global Comparability - PPI is the international standard used by IMF, OECD, and most advanced economies; India's transition improves cross-country price comparability [S2].

6. Recent Developments

• 25 May 2026: Competent authority approved the rebasing exercise [S2].
• 15 June 2026: PIB press release launching new WPI + OPPI + IPPI + Service PPI [S1].
• Feb–May 2026: Parallel rebasing of CPI (12 Feb 2026), GDP (27 Feb 2026), IIP (May 2026) to 2022-23 [S4].

7. Prelims Hooks

• New base year for WPI series: 2022-23 (previous 2011-12) [S1].
• Releasing agency: Office of Economic Adviser, DPIIT, Ministry of Commerce & Industry — NOT MoSPI [S1].
• Number of items in new WPI basket: 957 (up from 697) [S3].
• Number of services under Service PPI: 7 — Banking, Securities Transaction, Insurance, Pension Fund Management, Railways, Air (Passenger), Telecom [S1].
• Crude petroleum & natural gas reclassified from Primary Articles → Fuel & Power [S3].
• Solar, Wind, Nuclear electricity newly included [S3].
• Working Group chair: Dr. Ramesh Chand, Member NITI Aayog [S3].
• WPI to be discontinued after 5 years of parallel publication with PPI [S1].
• Three new PPIs launched: OPPI, Trial IPPI, Service PPI [S1].
• WPI does not include services in its main basket — PPI does.
• RBI's monetary policy targets CPI (4 ± 2%), not WPI.
• India's PPI transition follows IMF best practice / global standard [S2].

8. Mains Relevance

• GS-III: Indian Economy → Issues relating to growth, planning, mobilisation of resources & Inflation measurement.
• GS-II: Government policies & statistical reform; role of bodies like DPIIT, NITI Aayog.
• Probable question stems: 1. "Discuss the rationale for India's transition from WPI to PPI. How does it align with international best practices?" 2. "A robust price index regime is the backbone of credible monetary policy. Examine in light of recent rebasing of WPI/CPI/GDP series to 2022-23." 3. "Critically evaluate the methodological changes in the new WPI (2022-23) series and their implications for inflation targeting."

9. Related Topics to Study Next

• CPI (2022-23 series, MoSPI) — consumer counterpart used by RBI MPC.
• GDP rebasing 2022-23 — released 27 Feb 2026 [S4].
• IIP new series (2022-23) — released May 2026 [S4].
• Monetary Policy Committee & Inflation Targeting framework (4±2% CPI) — RBI Act amendment, 2016.
• Abhijit Sen Committee (2003) on WPI revision — original PPI recommendation.
• National Statistical Commission (NSC) & MoSPI restructuring.
• SNA 2008 / IMF Producer Price Index Manual — methodological basis.
• Inflation Indexed Bonds & price escalation clauses in PSU contracts.

10. Common Errors / Trap Areas

• Wrong ministry: WPI/PPI = DPIIT, Ministry of Commerce & Industry; CPI/IIP/GDP = MoSPI. Easy to swap.
• Base year confusion: previous WPI base was 2011-12, not 2004-05 (that was the predecessor).
• Services in WPI: WPI does NOT cover services; only Service PPI does — 7 services listed.
• Inflation target: RBI's 4±2% target is on CPI-Combined, not WPI.
• Working Group Chair: Dr. Ramesh Chand (current revision) is often confused with Abhijit Sen (2003 committee) or B.N. Goldar (PPI methodology).
• WPI is being phased out, not abolished immediately — 5-year overlap with PPI.

11. Sources

• [S1] Press Release on New Series of WPI and PPI with Base Year 2022-23 — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2272872 — (tier: 1)
• [S2] Base Year of Wholesale Price Index Revised from 2011-12 to 2022-23 — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2267963 — (tier: 1)
• [S3] Constitution of Working Group for the revision of the current series of WPI (Base 2011-12) — https://www.pib.gov.in/PressReleaseIframePage.aspx?PRID=2089549 — (tier: 1)
• [S4] Release of new series of GDP, CPI and IIP scheduled for Feb–May 2026 — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2226269 — (tier: 1)