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 Raw Cotton [1102010001] Primary articles

Linked values: from May 2026 = WPI 2022-23 [1102010001] x 1.9677 (item linking factor, ratio of FY 2024-25 geometric means).

MonthIndexChange on previous month Change over 12 monthsWPI all commoditiesSource
Sep 2026185.60 -2.7 +23.16 % 172.1 linked (2022-23 × 1.9677)
Aug 2026188.30 +15.5 +23.80 % 169.5 linked (2022-23 × 1.9677)
Jul 2026172.80 +0.4 +14.13 % 168.3 linked (2022-23 × 1.9677)
Jun 2026172.40 +2.2 +16.09 % 168.8 linked (2022-23 × 1.9677)
May 2026170.20 +14.2 +14.15 % 168.5 linked (2022-23 × 1.9677)
Apr 2026156.00 +7.0 +4.77 % 167.6 OEA
Mar 2026149.00 +0.4 +0.95 % 161.2 OEA
Feb 2026148.60 -1.3 -0.20 % 158.4 OEA
Jan 2026149.90 +4.2 +0.47 % 157.6 OEA
Dec 2025145.70 +0.5 -1.69 % 157.2 OEA
Nov 2025145.20 -3.0 -2.68 % 156.2 OEA
Oct 2025148.20 -2.5 -2.05 % 155.1 OEA
Sep 2025150.70 -1.4 -3.89 % 155.0 OEA
Aug 2025152.10 +0.7 -0.52 % 155.2 OEA
Jul 2025151.40 +2.9 -2.13 % 154.4 OEA
Jun 2025148.50 -0.6 -1.39 % 153.7 OEA
May 2025149.10 +0.2 -0.53 % 153.7 OEA
Apr 2025148.90 +1.3 -2.49 % 154.2 OEA
Mar 2025147.60 -1.3 -6.05 % 154.8 OEA
Feb 2025148.90 -0.3 -1.39 % 154.9 OEA
Jan 2025149.20 +1.0 -2.36 % 155.0 OEA
Dec 2024148.20 -1.0 - 155.7 OEA
Nov 2024149.20 -2.1 - 156.4 OEA
Oct 2024151.30 -5.5 - 156.7 OEA
Sep 2024156.80 +3.9 - 154.7 OEA
Aug 2024152.90 -1.8 - 154.4 OEA
Jul 2024154.70 +4.1 - 155.3 OEA
Jun 2024150.60 +0.7 - 154.0 OEA
May 2024149.90 -2.8 - 153.5 OEA
Apr 2024152.70 -4.4 - 152.9 OEA
Mar 2024157.10 +6.1 - 151.4 OEA
Feb 2024151.00 -1.8 - 151.2 OEA
Jan 2024152.80 - - 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.