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 Manufacture of paints, varnishes and similar coatings, printing ink and mastics [1310050000] Manufactured products

Linked values: from May 2026 = WPI 2022-23 [1310050000] x 1.5383 (item linking factor, ratio of FY 2024-25 geometric means).

MonthIndexChange on previous month Change over 12 monthsWPI all commoditiesSource
Sep 2026149.40 +0.5 +8.03 % 172.1 linked (2022-23 × 1.5383)
Aug 2026148.90 +0.3 +7.90 % 169.5 linked (2022-23 × 1.5383)
Jul 2026148.60 +0.6 +8.31 % 168.3 linked (2022-23 × 1.5383)
Jun 2026148.00 +1.1 +8.19 % 168.8 linked (2022-23 × 1.5383)
May 2026146.90 +4.5 +6.99 % 168.5 linked (2022-23 × 1.5383)
Apr 2026142.40 +2.6 +2.74 % 167.6 OEA
Mar 2026139.80 +1.5 +1.16 % 161.2 OEA
Feb 2026138.30 0.0 -0.29 % 158.4 OEA
Jan 2026138.30 -0.4 -0.58 % 157.6 OEA
Dec 2025138.70 +0.7 +0.07 % 157.2 OEA
Nov 2025138.00 0.0 -0.36 % 156.2 OEA
Oct 2025138.00 -0.3 -1.29 % 155.1 OEA
Sep 2025138.30 +0.3 -2.12 % 155.0 OEA
Aug 2025138.00 +0.8 -1.92 % 155.2 OEA
Jul 2025137.20 +0.4 -2.14 % 154.4 OEA
Jun 2025136.80 -0.5 -1.58 % 153.7 OEA
May 2025137.30 -1.3 -2.21 % 153.7 OEA
Apr 2025138.60 +0.4 -0.43 % 154.2 OEA
Mar 2025138.20 -0.5 -1.99 % 154.8 OEA
Feb 2025138.70 -0.4 -2.94 % 154.9 OEA
Jan 2025139.10 +0.5 -2.86 % 155.0 OEA
Dec 2024138.60 +0.1 - 155.7 OEA
Nov 2024138.50 -1.3 - 156.4 OEA
Oct 2024139.80 -1.5 - 156.7 OEA
Sep 2024141.30 +0.6 - 154.7 OEA
Aug 2024140.70 +0.5 - 154.4 OEA
Jul 2024140.20 +1.2 - 155.3 OEA
Jun 2024139.00 -1.4 - 154.0 OEA
May 2024140.40 +1.2 - 153.5 OEA
Apr 2024139.20 -1.8 - 152.9 OEA
Mar 2024141.00 -1.9 - 151.4 OEA
Feb 2024142.90 -0.3 - 151.2 OEA
Jan 2024143.20 - - 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.