Escalation Bill Price variation for RA and final bills · index-based formula

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 Aromatic chemicals [1310010005] Manufactured products

Linked values: from May 2026 = WPI 2022-23 [1310010025] x 1.3940 (item linking factor, ratio of FY 2024-25 geometric means).

MonthIndexChange on previous month Change over 12 monthsWPI all commoditiesSource
Sep 2026163.70 +2.7 +24.87 % 172.1 linked (2022-23 × 1.3940)
Aug 2026161.00 +2.6 +22.99 % 169.5 linked (2022-23 × 1.3940)
Jul 2026158.40 +2.6 +21.66 % 168.3 linked (2022-23 × 1.3940)
Jun 2026155.80 +2.0 +19.30 % 168.8 linked (2022-23 × 1.3940)
May 2026153.80 +15.9 +17.14 % 168.5 linked (2022-23 × 1.3940)
Apr 2026137.90 +4.1 +4.08 % 167.6 OEA
Mar 2026133.80 +2.5 +0.75 % 161.2 OEA
Feb 2026131.30 +0.7 -0.08 % 158.4 OEA
Jan 2026130.60 +0.5 -1.80 % 157.6 OEA
Dec 2025130.10 +0.3 +0.93 % 157.2 OEA
Nov 2025129.80 -2.4 +0.62 % 156.2 OEA
Oct 2025132.20 +1.1 +3.69 % 155.1 OEA
Sep 2025131.10 +0.2 +2.42 % 155.0 OEA
Aug 2025130.90 +0.7 +2.83 % 155.2 OEA
Jul 2025130.20 -0.4 +2.52 % 154.4 OEA
Jun 2025130.60 -0.7 +3.24 % 153.7 OEA
May 2025131.30 -1.2 +2.66 % 153.7 OEA
Apr 2025132.50 -0.3 +4.99 % 154.2 OEA
Mar 2025132.80 +1.4 +5.56 % 154.8 OEA
Feb 2025131.40 -1.6 +4.70 % 154.9 OEA
Jan 2025133.00 +4.1 +4.23 % 155.0 OEA
Dec 2024128.90 -0.1 - 155.7 OEA
Nov 2024129.00 +1.5 - 156.4 OEA
Oct 2024127.50 -0.5 - 156.7 OEA
Sep 2024128.00 +0.7 - 154.7 OEA
Aug 2024127.30 +0.3 - 154.4 OEA
Jul 2024127.00 +0.5 - 155.3 OEA
Jun 2024126.50 -1.4 - 154.0 OEA
May 2024127.90 +1.7 - 153.5 OEA
Apr 2024126.20 +0.4 - 152.9 OEA
Mar 2024125.80 +0.3 - 151.4 OEA
Feb 2024125.50 -2.1 - 151.2 OEA
Jan 2024127.60 - - 151.2 OEA

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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.