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 Lignite [1201030001] Fuel and power

Linked values: from May 2026 = WPI 2022-23 [1201030001] x 3.5512 (item linking factor, ratio of FY 2024-25 geometric means).

MonthIndexChange on previous month Change over 12 monthsWPI all commoditiesSource
Sep 2026399.90 +23.8 +91.80 % 172.1 linked (2022-23 × 3.5512)
Aug 2026376.10 +16.7 +80.73 % 169.5 linked (2022-23 × 3.5512)
Jul 2026359.40 +28.4 +73.04 % 168.3 linked (2022-23 × 3.5512)
Jun 2026331.00 +61.1 +47.44 % 168.8 linked (2022-23 × 3.5512)
May 2026269.90 +60.5 +20.22 % 168.5 linked (2022-23 × 3.5512)
Apr 2026209.40 0.0 -7.92 % 167.6 OEA
Mar 2026209.40 0.0 -9.43 % 161.2 OEA
Feb 2026209.40 0.0 -9.43 % 158.4 OEA
Jan 2026209.40 0.0 -9.35 % 157.6 OEA
Dec 2025209.40 0.0 -9.43 % 157.2 OEA
Nov 2025209.40 +0.4 -9.31 % 156.2 OEA
Oct 2025209.00 +0.5 -8.93 % 155.1 OEA
Sep 2025208.50 +0.4 -10.13 % 155.0 OEA
Aug 2025208.10 +0.4 -10.30 % 155.2 OEA
Jul 2025207.70 -16.8 -10.47 % 154.4 OEA
Jun 2025224.50 0.0 -4.87 % 153.7 OEA
May 2025224.50 -2.9 -4.87 % 153.7 OEA
Apr 2025227.40 -3.8 -3.64 % 154.2 OEA
Mar 2025231.20 0.0 -2.03 % 154.8 OEA
Feb 2025231.20 +0.2 -4.38 % 154.9 OEA
Jan 2025231.00 -0.2 -6.33 % 155.0 OEA
Dec 2024231.20 +0.3 - 155.7 OEA
Nov 2024230.90 +1.4 - 156.4 OEA
Oct 2024229.50 -2.5 - 156.7 OEA
Sep 2024232.00 0.0 - 154.7 OEA
Aug 2024232.00 0.0 - 154.4 OEA
Jul 2024232.00 -4.0 - 155.3 OEA
Jun 2024236.00 0.0 - 154.0 OEA
May 2024236.00 0.0 - 153.5 OEA
Apr 2024236.00 0.0 - 152.9 OEA
Mar 2024236.00 -5.8 - 151.4 OEA
Feb 2024241.80 -4.8 - 151.2 OEA
Jan 2024246.60 - - 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.