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 Cotton Seed [1102020003] Primary articles

Linked values: from May 2026 = WPI 2022-23 [1102020006] x 1.9325 (item linking factor, ratio of FY 2024-25 geometric means).

MonthIndexChange on previous month Change over 12 monthsWPI all commoditiesSource
Sep 2026243.90 +2.7 +27.10 % 172.1 linked (2022-23 × 1.9325)
Aug 2026241.20 +7.2 +26.35 % 169.5 linked (2022-23 × 1.9325)
Jul 2026234.00 +4.4 +24.47 % 168.3 linked (2022-23 × 1.9325)
Jun 2026229.60 +6.4 +23.18 % 168.8 linked (2022-23 × 1.9325)
May 2026223.20 +24.1 +20.06 % 168.5 linked (2022-23 × 1.9325)
Apr 2026199.10 +3.2 +8.15 % 167.6 OEA
Mar 2026195.90 -1.1 +6.01 % 161.2 OEA
Feb 2026197.00 +4.2 +8.00 % 158.4 OEA
Jan 2026192.80 +3.3 +7.95 % 157.6 OEA
Dec 2025189.50 -2.4 +6.40 % 157.2 OEA
Nov 2025191.90 0.0 +5.79 % 156.2 OEA
Oct 2025191.90 0.0 +4.98 % 155.1 OEA
Sep 2025191.90 +1.0 +4.01 % 155.0 OEA
Aug 2025190.90 +2.9 +6.47 % 155.2 OEA
Jul 2025188.00 +1.6 +6.58 % 154.4 OEA
Jun 2025186.40 +0.5 +5.55 % 153.7 OEA
May 2025185.90 +1.8 +7.64 % 153.7 OEA
Apr 2025184.10 -0.7 +7.91 % 154.2 OEA
Mar 2025184.80 +2.4 +10.86 % 154.8 OEA
Feb 2025182.40 +3.8 +6.48 % 154.9 OEA
Jan 2025178.60 +0.5 +3.48 % 155.0 OEA
Dec 2024178.10 -3.3 - 155.7 OEA
Nov 2024181.40 -1.4 - 156.4 OEA
Oct 2024182.80 -1.7 - 156.7 OEA
Sep 2024184.50 +5.2 - 154.7 OEA
Aug 2024179.30 +2.9 - 154.4 OEA
Jul 2024176.40 -0.2 - 155.3 OEA
Jun 2024176.60 +3.9 - 154.0 OEA
May 2024172.70 +2.1 - 153.5 OEA
Apr 2024170.60 +3.9 - 152.9 OEA
Mar 2024166.70 -4.6 - 151.4 OEA
Feb 2024171.30 -1.3 - 151.2 OEA
Jan 2024172.60 - - 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.