Price index database
Official indices: CPI-IW for the Labour Bureau's centres (base 2016 = 100, from January 2024) and the Wholesale Price Index for every item - the current series (base 2022-23 = 100, from April 2023) and the former series (base 2011-12 = 100, from January 2024 to April 2026, continued by linking). Escalation bills take their base and current indices from here.
Latest official month in the database: CPI-IW 2026-08, WPI 2022-23 2026-09, WPI 2011-12 2026-04 (linked to 2026-09). Source: Office of the Economic Adviser, DPIIT - Wholesale Price Index (base 2011-12=100) - eaindustry.nic.in. The OEA stopped this series after April 2026. Later months are linked: the 2022-23 index of the same item multiplied by a linking factor - the OEA's own factors for All commodities (1.53), Primary articles (1.71), Fuel & power (1.65) and Manufactured products (1.44), and for other items the ratio of the geometric means of their FY 2024-25 indices in the two series, the method the OEA used. Items with no clear successor in the new series are not linked; use the 2022-23 series for them. Values entered by hand are highlighted and kept when you update.
WPI Naphtha [1202000006] Fuel and power
Linked values: from May 2026 = WPI 2022-23 [1202010006] x 1.3817 (item linking factor, ratio of FY 2024-25 geometric means).
| Month | Index | Change on previous month | Change over 12 months | WPI all commodities | Source |
|---|---|---|---|---|---|
| Sep 2026 | 183.10 | -10.8 | +46.60 % | 172.1 | linked (2022-23 × 1.3817) |
| Aug 2026 | 193.90 | +42.9 | +57.64 % | 169.5 | linked (2022-23 × 1.3817) |
| Jul 2026 | 151.00 | -43.0 | +22.17 % | 168.3 | linked (2022-23 × 1.3817) |
| Jun 2026 | 194.00 | -36.3 | +63.71 % | 168.8 | linked (2022-23 × 1.3817) |
| May 2026 | 230.30 | -17.3 | +94.67 % | 168.5 | linked (2022-23 × 1.3817) |
| Apr 2026 | 247.60 | +99.0 | +94.81 % | 167.6 | OEA |
| Mar 2026 | 148.60 | +23.8 | +8.71 % | 161.2 | OEA |
| Feb 2026 | 124.80 | +7.4 | -10.34 % | 158.4 | OEA |
| Jan 2026 | 117.40 | -4.3 | -13.04 % | 157.6 | OEA |
| Dec 2025 | 121.70 | -0.9 | -6.81 % | 157.2 | OEA |
| Nov 2025 | 122.60 | -5.6 | -9.39 % | 156.2 | OEA |
| Oct 2025 | 128.20 | +3.3 | -4.40 % | 155.1 | OEA |
| Sep 2025 | 124.90 | +1.9 | -7.21 % | 155.0 | OEA |
| Aug 2025 | 123.00 | -0.6 | -9.36 % | 155.2 | OEA |
| Jul 2025 | 123.60 | +5.1 | -9.98 % | 154.4 | OEA |
| Jun 2025 | 118.50 | +0.2 | -8.42 % | 153.7 | OEA |
| May 2025 | 118.30 | -8.8 | -13.52 % | 153.7 | OEA |
| Apr 2025 | 127.10 | -9.6 | -8.36 % | 154.2 | OEA |
| Mar 2025 | 136.70 | -2.5 | -1.01 % | 154.8 | OEA |
| Feb 2025 | 139.20 | +4.2 | +5.86 % | 154.9 | OEA |
| Jan 2025 | 135.00 | +4.4 | +0.07 % | 155.0 | OEA |
| Dec 2024 | 130.60 | -4.7 | - | 155.7 | OEA |
| Nov 2024 | 135.30 | +1.2 | - | 156.4 | OEA |
| Oct 2024 | 134.10 | -0.5 | - | 156.7 | OEA |
| Sep 2024 | 134.60 | -1.1 | - | 154.7 | OEA |
| Aug 2024 | 135.70 | -1.6 | - | 154.4 | OEA |
| Jul 2024 | 137.30 | +7.9 | - | 155.3 | OEA |
| Jun 2024 | 129.40 | -7.4 | - | 154.0 | OEA |
| May 2024 | 136.80 | -1.9 | - | 153.5 | OEA |
| Apr 2024 | 138.70 | +0.6 | - | 152.9 | OEA |
| Mar 2024 | 138.10 | +6.6 | - | 151.4 | OEA |
| Feb 2024 | 131.50 | -3.4 | - | 151.2 | OEA |
| Jan 2024 | 134.90 | - | - | 151.2 | OEA |
Enter a month by hand
For a month not yet in the database (e.g. from the latest press release). Updates from the website do not replace hand-entered values; enter the official figure here to correct one.