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 Mustard Oil [1301040002] Manufactured products

Linked values: from May 2026 = WPI 2022-23 [1301040002] x 1.9896 (item linking factor, ratio of FY 2024-25 geometric means).

MonthIndexChange on previous month Change over 12 monthsWPI all commoditiesSource
Sep 2026237.80 -0.8 +6.40 % 172.1 linked (2022-23 × 1.9896)
Aug 2026238.60 +7.4 +6.00 % 169.5 linked (2022-23 × 1.9896)
Jul 2026231.20 +5.0 +4.19 % 168.3 linked (2022-23 × 1.9896)
Jun 2026226.20 +6.3 +9.33 % 168.8 linked (2022-23 × 1.9896)
May 2026219.90 +2.3 +11.06 % 168.5 linked (2022-23 × 1.9896)
Apr 2026217.60 +3.0 +13.63 % 167.6 OEA
Mar 2026214.60 +1.3 +13.01 % 161.2 OEA
Feb 2026213.30 -3.0 +12.09 % 158.4 OEA
Jan 2026216.30 +1.0 +12.13 % 157.6 OEA
Dec 2025215.30 -2.9 +10.75 % 157.2 OEA
Nov 2025218.20 +0.4 +10.43 % 156.2 OEA
Oct 2025217.80 -5.7 +11.69 % 155.1 OEA
Sep 2025223.50 -1.6 +18.44 % 155.0 OEA
Aug 2025225.10 +3.2 +29.59 % 155.2 OEA
Jul 2025221.90 +15.0 +29.09 % 154.4 OEA
Jun 2025206.90 +8.9 +20.99 % 153.7 OEA
May 2025198.00 +6.5 +21.47 % 153.7 OEA
Apr 2025191.50 +1.6 +24.51 % 154.2 OEA
Mar 2025189.90 -0.4 +24.36 % 154.8 OEA
Feb 2025190.30 -2.6 +25.94 % 154.9 OEA
Jan 2025192.90 -1.5 +26.08 % 155.0 OEA
Dec 2024194.40 -3.2 - 155.7 OEA
Nov 2024197.60 +2.6 - 156.4 OEA
Oct 2024195.00 +6.3 - 156.7 OEA
Sep 2024188.70 +15.0 - 154.7 OEA
Aug 2024173.70 +1.8 - 154.4 OEA
Jul 2024171.90 +0.9 - 155.3 OEA
Jun 2024171.00 +8.0 - 154.0 OEA
May 2024163.00 +9.2 - 153.5 OEA
Apr 2024153.80 +1.1 - 152.9 OEA
Mar 2024152.70 +1.6 - 151.4 OEA
Feb 2024151.10 -1.9 - 151.2 OEA
Jan 2024153.00 - - 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.