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 Electrical resistors (except heating resistors) [1317010014] Manufactured products

Linked values: from May 2026 = WPI 2022-23 [1314010030] x 1.8114 (item linking factor, ratio of FY 2024-25 geometric means).

MonthIndexChange on previous month Change over 12 monthsWPI all commoditiesSource
Sep 2026195.30 +8.9 +3.12 % 172.1 linked (2022-23 × 1.8114)
Aug 2026186.40 -17.4 -4.02 % 169.5 linked (2022-23 × 1.8114)
Jul 2026203.80 +4.4 +5.87 % 168.3 linked (2022-23 × 1.8114)
Jun 2026199.40 +2.1 +5.28 % 168.8 linked (2022-23 × 1.8114)
May 2026197.30 +1.9 +3.84 % 168.5 linked (2022-23 × 1.8114)
Apr 2026195.40 +2.5 +1.51 % 167.6 OEA
Mar 2026192.90 +0.7 +0.78 % 161.2 OEA
Feb 2026192.20 +2.5 +2.18 % 158.4 OEA
Jan 2026189.70 +1.3 +0.32 % 157.6 OEA
Dec 2025188.40 -6.2 -0.11 % 157.2 OEA
Nov 2025194.60 +2.9 +2.64 % 156.2 OEA
Oct 2025191.70 +2.3 +0.68 % 155.1 OEA
Sep 2025189.40 -4.8 +0.80 % 155.0 OEA
Aug 2025194.20 +1.7 +3.24 % 155.2 OEA
Jul 2025192.50 +3.1 +2.34 % 154.4 OEA
Jun 2025189.40 -0.6 +0.58 % 153.7 OEA
May 2025190.00 -2.5 +1.23 % 153.7 OEA
Apr 2025192.50 +1.1 +2.50 % 154.2 OEA
Mar 2025191.40 +3.3 +1.22 % 154.8 OEA
Feb 2025188.10 -1.0 -0.48 % 154.9 OEA
Jan 2025189.10 +0.5 -0.89 % 155.0 OEA
Dec 2024188.60 -1.0 - 155.7 OEA
Nov 2024189.60 -0.8 - 156.4 OEA
Oct 2024190.40 +2.5 - 156.7 OEA
Sep 2024187.90 -0.2 - 154.7 OEA
Aug 2024188.10 0.0 - 154.4 OEA
Jul 2024188.10 -0.2 - 155.3 OEA
Jun 2024188.30 +0.6 - 154.0 OEA
May 2024187.70 -0.1 - 153.5 OEA
Apr 2024187.80 -1.3 - 152.9 OEA
Mar 2024189.10 +0.1 - 151.4 OEA
Feb 2024189.00 -1.8 - 151.2 OEA
Jan 2024190.80 - - 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.