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 Pig Iron [1314020001] Manufactured products

Linked values: from May 2026 = WPI 2022-23 [1314010003] x 1.6529 (item linking factor, ratio of FY 2024-25 geometric means).

MonthIndexChange on previous month Change over 12 monthsWPI all commoditiesSource
Sep 2026149.60 +4.0 +17.24 % 172.1 linked (2022-23 × 1.6529)
Aug 2026145.60 -1.2 +13.48 % 169.5 linked (2022-23 × 1.6529)
Jul 2026146.80 +1.8 +14.15 % 168.3 linked (2022-23 × 1.6529)
Jun 2026145.00 -3.4 +11.97 % 168.8 linked (2022-23 × 1.6529)
May 2026148.40 +5.0 +11.41 % 168.5 linked (2022-23 × 1.6529)
Apr 2026143.40 +4.3 +5.05 % 167.6 OEA
Mar 2026139.10 -0.4 +2.05 % 161.2 OEA
Feb 2026139.50 +5.3 +5.92 % 158.4 OEA
Jan 2026134.20 +7.4 +2.05 % 157.6 OEA
Dec 2025126.80 +0.5 -4.95 % 157.2 OEA
Nov 2025126.30 -0.1 -8.94 % 156.2 OEA
Oct 2025126.40 -1.2 -11.36 % 155.1 OEA
Sep 2025127.60 -0.7 -7.74 % 155.0 OEA
Aug 2025128.30 -0.3 -11.76 % 155.2 OEA
Jul 2025128.60 -0.9 -13.34 % 154.4 OEA
Jun 2025129.50 -3.7 -14.18 % 153.7 OEA
May 2025133.20 -3.3 -13.84 % 153.7 OEA
Apr 2025136.50 +0.2 -8.63 % 154.2 OEA
Mar 2025136.30 +4.6 -7.53 % 154.8 OEA
Feb 2025131.70 +0.2 -12.43 % 154.9 OEA
Jan 2025131.50 -1.9 -12.80 % 155.0 OEA
Dec 2024133.40 -5.3 - 155.7 OEA
Nov 2024138.70 -3.9 - 156.4 OEA
Oct 2024142.60 +4.3 - 156.7 OEA
Sep 2024138.30 -7.1 - 154.7 OEA
Aug 2024145.40 -3.0 - 154.4 OEA
Jul 2024148.40 -2.5 - 155.3 OEA
Jun 2024150.90 -3.7 - 154.0 OEA
May 2024154.60 +5.2 - 153.5 OEA
Apr 2024149.40 +2.0 - 152.9 OEA
Mar 2024147.40 -3.0 - 151.4 OEA
Feb 2024150.40 -0.4 - 151.2 OEA
Jan 2024150.80 - - 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.