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 Marble Slab [1313060002] Manufactured products

Linked values: from May 2026 = WPI 2022-23 [1313060004] x 1.2769 (item linking factor, ratio of FY 2024-25 geometric means).

MonthIndexChange on previous month Change over 12 monthsWPI all commoditiesSource
Sep 2026138.40 -2.3 +5.81 % 172.1 linked (2022-23 × 1.2769)
Aug 2026140.70 -1.8 +5.47 % 169.5 linked (2022-23 × 1.2769)
Jul 2026142.50 +5.1 +9.20 % 168.3 linked (2022-23 × 1.2769)
Jun 2026137.40 -5.6 +4.81 % 168.8 linked (2022-23 × 1.2769)
May 2026143.00 +11.5 +8.58 % 168.5 linked (2022-23 × 1.2769)
Apr 2026131.50 +2.2 -0.90 % 167.6 OEA
Mar 2026129.30 -0.2 -0.31 % 161.2 OEA
Feb 2026129.50 -0.8 -1.45 % 158.4 OEA
Jan 2026130.30 -1.0 -1.14 % 157.6 OEA
Dec 2025131.30 +0.7 -0.76 % 157.2 OEA
Nov 2025130.60 +1.8 -0.53 % 156.2 OEA
Oct 2025128.80 -2.0 -1.23 % 155.1 OEA
Sep 2025130.80 -2.6 -0.98 % 155.0 OEA
Aug 2025133.40 +2.9 +1.68 % 155.2 OEA
Jul 2025130.50 -0.6 0.00 % 154.4 OEA
Jun 2025131.10 -0.6 -1.43 % 153.7 OEA
May 2025131.70 -1.0 -0.08 % 153.7 OEA
Apr 2025132.70 +3.0 +1.38 % 154.2 OEA
Mar 2025129.70 -1.7 -1.07 % 154.8 OEA
Feb 2025131.40 -0.4 +0.46 % 154.9 OEA
Jan 2025131.80 -0.5 -0.15 % 155.0 OEA
Dec 2024132.30 +1.0 - 155.7 OEA
Nov 2024131.30 +0.9 - 156.4 OEA
Oct 2024130.40 -1.7 - 156.7 OEA
Sep 2024132.10 +0.9 - 154.7 OEA
Aug 2024131.20 +0.7 - 154.4 OEA
Jul 2024130.50 -2.5 - 155.3 OEA
Jun 2024133.00 +1.2 - 154.0 OEA
May 2024131.80 +0.9 - 153.5 OEA
Apr 2024130.90 -0.2 - 152.9 OEA
Mar 2024131.10 +0.3 - 151.4 OEA
Feb 2024130.80 -1.2 - 151.2 OEA
Jan 2024132.00 - - 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.