On 14 July 2026, the Office of the Economic Adviser (in the Department for Promotion of Industry and Internal Trade, DPIIT) released the Wholesale Price Index (WPI) for June 2026 on the newly revised base year 2022-23 — showing WPI inflation of 9.87% — while also publishing India's brand-new Producer Price Index (PPI) series. For a CDS/OTA aspirant this is a high-value economy topic: it refreshes the classic WPI-vs-CPI distinction and adds the PPI, a measure that will eventually replace the WPI in India. Price indices are among the most reliably examined economics concepts, so this one deserves a careful read.
The news in one frame
The essentials:
- What: June 2026 WPI = 9.87% (up from 9.68% in May), on the new base year 2022-23 (shifted from 2011-12).
- New tool: launch of the Producer Price Index (PPI) — Output PPI, a trial Input PPI, and a Services PPI — with the same 2022-23 base.
- Who: the Office of the Economic Adviser, DPIIT, Ministry of Commerce & Industry — not MoSPI.
- Why it matters: the WPI will run in parallel with the PPI for five years and then be discontinued, aligning India with global best practice and the IMF.
What the Wholesale Price Index measures
Start with the workhorse. The Wholesale Price Index (WPI) tracks the average change in the prices of goods traded in bulk (wholesale) between businesses — before they reach the retail consumer. Its three broad groups, with the new-series June 2026 readings, are:
- Primary Articles (food articles, minerals, crude petroleum) — index 116.1, inflation 7.0%.
- Fuel & Power (coal, electricity, petrol, diesel) — index 111.1, a steep 27.41%.
- Manufactured Products (the largest weight — chemicals, metals, textiles, food products) — index 107.8, 7.48%.
A crucial CDS point: the WPI basket contains only goods — no services — and it uses basic prices (excluding taxes like GST). The main drivers of the June spike were mineral oils, food articles, basic metals and chemicals. These structural features are exactly what the CDS/OTA notes on inflation unpack.
WPI versus CPI — the exam's favourite contrast
The most-tested angle is the WPI-CPI distinction:
| Feature | WPI | CPI |
|---|---|---|
| Stage of trade | Wholesale (business-to-business) | Retail (final consumer) |
| Basket | Goods only | Goods + services |
| Compiled by | Office of Economic Adviser, DPIIT | NSO, MoSPI |
| New base year | 2022-23 | 2012 (CPI) |
| Used for | Producer-side/industrial trends | Monetary policy target |
The single most important discriminator: the RBI's inflation target of 4% (±2%) is set on the CPI, not the WPI. WPI captures producer-side pressure and can diverge sharply from retail CPI — for instance when fuel prices swing. Because the WPI omits services (over half of India's GVA) and can be volatile, economists have long wanted a better producer-side gauge. This links to the wider monetary-policy framework that the RBI operates.
What is a Producer Price Index (PPI)?
Here is the genuinely new concept. A Producer Price Index (PPI) measures the average change in prices received by domestic producers for their output (and, in the input version, prices paid for their inputs). Unlike the WPI — which tracks the price of a good as it changes hands in the market — the PPI measures prices from the producer's gate, conceptually cleaner and free of double-counting and trade margins. India's new PPI framework, developed by a Working Group chaired by economist Ramesh Chand, has several components:
- Output PPI (OPPI) — prices producers receive for goods they sell.
- Input PPI (IPPI) — prices producers pay for raw materials (released on a trial basis).
- Services PPI — covering seven services initially (banking, securities, insurance, pension-fund management, railways, air passenger transport, and telecom) — finally bringing services into the wholesale-price picture.
The revamp also expanded the basket from 697 to 957 items and folded solar, wind and nuclear electricity into the Electricity group — modernising a series that had drifted out of date.
Why India is switching from WPI to PPI
The reform logic is examinable in itself:
- Global alignment: most advanced economies use a PPI, not a WPI; the IMF recommends the PPI. India was an outlier still relying on a wholesale-price measure.
- Includes services: the WPI's blind spot was services; the PPI finally captures part of the services economy.
- Cleaner methodology: the PPI avoids double counting and tax distortions, measuring prices at the point of production.
- Smooth transition: because the WPI is embedded in countless price-escalation clauses in government and commercial contracts, it will be released for five more years alongside the PPI and only then retired — giving users time to switch.
The revision hook to remember: WPI base shifted 2011-12 → 2022-23; a new PPI (Output + Input + Services) launched; the WPI runs in parallel for five years, then goes; DPIIT's Office of the Economic Adviser compiles both.
Placing the price-index family together
For a complete answer, know India's full set of price gauges and who runs them:
- WPI / PPI → Office of the Economic Adviser, DPIIT (Commerce Ministry).
- CPI (Combined, Rural, Urban) → National Statistical Office (NSO), MoSPI — the monetary-policy index.
- CPI-IW (Industrial Workers) → Labour Bureau — used for dearness allowance.
- GDP deflator → derived from National Accounts (MoSPI) — the broadest economy-wide price measure.
Knowing which agency compiles which index — and that the CPI, not WPI, anchors RBI policy — is the classic discriminator. This ties into the broader government budget and fiscal picture that these indices feed.
Exam relevance in one paragraph
For CDS/OTA GK, retain: the WPI (new base 2022-23, compiled by the Office of the Economic Adviser under DPIIT) measures wholesale prices of goods only; June 2026 WPI was 9.87%; its three groups are Primary Articles, Fuel & Power and Manufactured Products; India has now launched a Producer Price Index (Output, Input and Services PPI) that will replace the WPI after a five-year parallel run, aligning with the IMF and global practice; the CPI (MoSPI) — not the WPI — is the RBI's 4%±2% inflation target. For the essay/interview, present it as a modernisation of India's inflation statistics.
🎯 Practice MCQs
Q1. The Wholesale Price Index (WPI) in India is compiled by the: (a) Office of the Economic Adviser, DPIIT (b) RBI (c) NSO, MoSPI (d) Labour Bureau → (a) — the Office of the Economic Adviser, DPIIT (Ministry of Commerce & Industry).
Q2. The new base year for the WPI series (2026) is: (a) 2022-23 (b) 2011-12 (c) 2004-05 (d) 2017-18 → (a) — 2022-23 (shifted from 2011-12).
Q3. Which price index is the basis of the RBI's inflation target of 4% (±2%)? (a) CPI (b) WPI (c) PPI (d) GDP deflator → (a) — the Consumer Price Index (CPI).
Q4. The WPI basket includes: (a) goods only (b) services only (c) both goods and services (d) only imported goods → (a) — goods only (no services).
Q5. A Producer Price Index (PPI) measures prices: (a) received by producers for their output (b) paid by final consumers (c) of exports only (d) of shares → (a) — prices at the producer's gate.
Q6. The CPI (Combined) is compiled by: (a) National Statistical Office (NSO), MoSPI (b) DPIIT (c) RBI (d) SEBI → (a) — the NSO under MoSPI.
Q7. Which is NOT one of the three major groups of the WPI? (a) Services (b) Primary Articles (c) Fuel & Power (d) Manufactured Products → (a) — Services (the WPI has no services group).
Q8. WPI inflation for June 2026 was reported at about: (a) 9.87% (b) 4.0% (c) 2.1% (d) 15% → (a) — 9.87% (year-on-year).
Q9. India's new PPI framework was recommended by a Working Group chaired by: (a) Ramesh Chand (b) Raghuram Rajan (c) Bimal Jalan (d) C. Rangarajan → (a) — economist Ramesh Chand.
Q10. After the PPI launch, the WPI will be: (a) run in parallel for five years, then discontinued (b) scrapped immediately (c) kept forever (d) merged into the CPI → (a) — released alongside the PPI for five years, then retired.
Q11. The CPI-IW, used to calculate Dearness Allowance, is compiled by the: (a) Labour Bureau (b) RBI (c) NITI Aayog (d) SEBI → (a) — the Labour Bureau.
Q12. The main reason for moving to a PPI is that the WPI: (a) excluded services and diverged from global practice (b) was too new (c) tracked only exports (d) was set by the RBI → (a) — it omitted services and was out of step with IMF-recommended practice.
Q13. In the WPI's new series, which items were added to the 'Electricity' group? (a) solar, wind and nuclear (b) only coal (c) only diesel (d) natural gas only → (a) — solar, wind and nuclear electricity.
Q14. The broadest, economy-wide measure of prices is the: (a) GDP deflator (b) WPI (c) CPI-IW (d) Sensex → (a) — the GDP deflator.
Q15. WPI prices are measured at: (a) basic prices, excluding taxes like GST (b) retail prices with all taxes (c) export prices (d) MRP → (a) — basic prices (excluding indirect taxes).
📋 How this gets asked (PYQ pattern)
Price indices are a dependable CDS/OTA economy set. The reliable framings are WPI-vs-CPI (wholesale vs retail, goods-only vs goods+services), which agency compiles which index, and which index anchors RBI monetary policy (CPI). A common trap swaps the compilers (putting WPI under MoSPI, or the CPI under the RBI). The fresh 2026 hook is the new 2022-23 WPI base and the launch of the PPI — ideal for "which index / which base year / which ministry" items. We reference the pattern, not any exact past question.
Preparing for CDS or OTA? Price indices, inflation and monetary policy are high-yield economy topics and strong essay material. Follow our daily CDS/OTA current affairs and train with serving-officer faculty in the upcoming Cavalier courses in Delhi.
✍️ Written by Aditya Tiwari — Economy & current-affairs faculty at The Cavalier. Reviewed by the Cavalier Faculty Desk. The Cavalier, founded by ex-Army officers, has trained NDA/CDS/SSB aspirants since 2001 (Facebook · YouTube).
Source: PIB / Office of the Economic Adviser, DPIIT release, 14 July 2026. Facts cross-verified with independent sources.