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 Acetic acid and Its Derivatives [1310010004] Manufactured products

Linked values: from May 2026 = WPI 2022-23 [1310010027] x 1.4388 (item linking factor, ratio of FY 2024-25 geometric means).

MonthIndexChange on previous month Change over 12 monthsWPI all commoditiesSource
Sep 2026150.90 +4.0 +42.76 % 172.1 linked (2022-23 × 1.4388)
Aug 2026146.90 +5.8 +36.52 % 169.5 linked (2022-23 × 1.4388)
Jul 2026141.10 +9.6 +30.05 % 168.3 linked (2022-23 × 1.4388)
Jun 2026131.50 +1.1 +19.22 % 168.8 linked (2022-23 × 1.4388)
May 2026130.40 +5.1 +16.95 % 168.5 linked (2022-23 × 1.4388)
Apr 2026125.30 +6.1 +11.18 % 167.6 OEA
Mar 2026119.20 +6.6 +6.52 % 161.2 OEA
Feb 2026112.60 +1.2 +0.99 % 158.4 OEA
Jan 2026111.40 +4.9 +0.09 % 157.6 OEA
Dec 2025106.50 +1.6 -1.75 % 157.2 OEA
Nov 2025104.90 +0.6 -5.50 % 156.2 OEA
Oct 2025104.30 -1.4 -6.29 % 155.1 OEA
Sep 2025105.70 -1.9 -7.52 % 155.0 OEA
Aug 2025107.60 -0.9 -6.11 % 155.2 OEA
Jul 2025108.50 -1.8 -4.49 % 154.4 OEA
Jun 2025110.30 -1.2 -6.13 % 153.7 OEA
May 2025111.50 -1.2 -6.85 % 153.7 OEA
Apr 2025112.70 +0.8 -6.32 % 154.2 OEA
Mar 2025111.90 +0.4 -8.80 % 154.8 OEA
Feb 2025111.50 +0.2 -10.44 % 154.9 OEA
Jan 2025111.30 +2.9 -10.60 % 155.0 OEA
Dec 2024108.40 -2.6 - 155.7 OEA
Nov 2024111.00 -0.3 - 156.4 OEA
Oct 2024111.30 -3.0 - 156.7 OEA
Sep 2024114.30 -0.3 - 154.7 OEA
Aug 2024114.60 +1.0 - 154.4 OEA
Jul 2024113.60 -3.9 - 155.3 OEA
Jun 2024117.50 -2.2 - 154.0 OEA
May 2024119.70 -0.6 - 153.5 OEA
Apr 2024120.30 -2.4 - 152.9 OEA
Mar 2024122.70 -1.8 - 151.4 OEA
Feb 2024124.50 0.0 - 151.2 OEA
Jan 2024124.50 - - 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.