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 Manufacture of railway locomotives and rolling stock [1320020000] Manufactured products

Linked values: from May 2026 = WPI 2022-23 [1320020000] x 1.0669 (item linking factor, ratio of FY 2024-25 geometric means).

MonthIndexChange on previous month Change over 12 monthsWPI all commoditiesSource
Sep 2026114.50 -2.5 +4.09 % 172.1 linked (2022-23 × 1.0669)
Aug 2026117.00 +1.2 +5.41 % 169.5 linked (2022-23 × 1.0669)
Jul 2026115.80 -0.4 +5.27 % 168.3 linked (2022-23 × 1.0669)
Jun 2026116.20 +1.4 +5.83 % 168.8 linked (2022-23 × 1.0669)
May 2026114.80 +3.6 +4.65 % 168.5 linked (2022-23 × 1.0669)
Apr 2026111.20 +0.1 +1.74 % 167.6 OEA
Mar 2026111.10 +0.2 +1.46 % 161.2 OEA
Feb 2026110.90 +0.2 +1.56 % 158.4 OEA
Jan 2026110.70 +0.1 +1.37 % 157.6 OEA
Dec 2025110.60 -0.7 +1.65 % 157.2 OEA
Nov 2025111.30 +0.6 +3.25 % 156.2 OEA
Oct 2025110.70 +0.7 +2.41 % 155.1 OEA
Sep 2025110.00 -1.0 0.00 % 155.0 OEA
Aug 2025111.00 +1.0 +0.91 % 155.2 OEA
Jul 2025110.00 +0.2 +0.18 % 154.4 OEA
Jun 2025109.80 +0.1 +1.39 % 153.7 OEA
May 2025109.70 +0.4 +1.29 % 153.7 OEA
Apr 2025109.30 -0.2 +1.02 % 154.2 OEA
Mar 2025109.50 +0.3 +0.92 % 154.8 OEA
Feb 2025109.20 0.0 +0.74 % 154.9 OEA
Jan 2025109.20 +0.4 -1.09 % 155.0 OEA
Dec 2024108.80 +1.0 - 155.7 OEA
Nov 2024107.80 -0.3 - 156.4 OEA
Oct 2024108.10 -1.9 - 156.7 OEA
Sep 2024110.00 0.0 - 154.7 OEA
Aug 2024110.00 +0.2 - 154.4 OEA
Jul 2024109.80 +1.5 - 155.3 OEA
Jun 2024108.30 0.0 - 154.0 OEA
May 2024108.30 +0.1 - 153.5 OEA
Apr 2024108.20 -0.3 - 152.9 OEA
Mar 2024108.50 +0.1 - 151.4 OEA
Feb 2024108.40 -2.0 - 151.2 OEA
Jan 2024110.40 - - 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.