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 Light fitting accessories [1317050002] Manufactured products

Linked values: from May 2026 = WPI 2022-23 [1317060001] x 1.5051 (item linking factor, ratio of FY 2024-25 geometric means).

MonthIndexChange on previous month Change over 12 monthsWPI all commoditiesSource
Sep 2026137.30 +4.2 +9.84 % 172.1 linked (2022-23 × 1.5051)
Aug 2026133.10 -1.6 +6.57 % 169.5 linked (2022-23 × 1.5051)
Jul 2026134.70 0.0 +8.02 % 168.3 linked (2022-23 × 1.5051)
Jun 2026134.70 -1.5 +5.40 % 168.8 linked (2022-23 × 1.5051)
May 2026136.20 +8.9 +6.74 % 168.5 linked (2022-23 × 1.5051)
Apr 2026127.30 +2.0 -0.24 % 167.6 OEA
Mar 2026125.30 +0.4 -1.73 % 161.2 OEA
Feb 2026124.90 -0.1 -2.04 % 158.4 OEA
Jan 2026125.00 +0.1 -3.25 % 157.6 OEA
Dec 2025124.90 -0.2 -3.25 % 157.2 OEA
Nov 2025125.10 0.0 -3.02 % 156.2 OEA
Oct 2025125.10 +0.1 -4.65 % 155.1 OEA
Sep 2025125.00 +0.1 -6.79 % 155.0 OEA
Aug 2025124.90 +0.2 -7.89 % 155.2 OEA
Jul 2025124.70 -3.1 -7.77 % 154.4 OEA
Jun 2025127.80 +0.2 -5.33 % 153.7 OEA
May 2025127.60 0.0 -5.20 % 153.7 OEA
Apr 2025127.60 +0.1 -4.49 % 154.2 OEA
Mar 2025127.50 0.0 -4.78 % 154.8 OEA
Feb 2025127.50 -1.7 -4.35 % 154.9 OEA
Jan 2025129.20 +0.1 -4.15 % 155.0 OEA
Dec 2024129.10 +0.1 - 155.7 OEA
Nov 2024129.00 -2.2 - 156.4 OEA
Oct 2024131.20 -2.9 - 156.7 OEA
Sep 2024134.10 -1.5 - 154.7 OEA
Aug 2024135.60 +0.4 - 154.4 OEA
Jul 2024135.20 +0.2 - 155.3 OEA
Jun 2024135.00 +0.4 - 154.0 OEA
May 2024134.60 +1.0 - 153.5 OEA
Apr 2024133.60 -0.3 - 152.9 OEA
Mar 2024133.90 +0.6 - 151.4 OEA
Feb 2024133.30 -1.5 - 151.2 OEA
Jan 2024134.80 - - 151.2 OEA

Enter a month by hand

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.