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 pharmaceuticals, medicinal chemical and botanical products [1311010000] Manufactured products

Linked values: from May 2026 = WPI 2022-23 [1311010000] x 1.4470 (item linking factor, ratio of FY 2024-25 geometric means).

MonthIndexChange on previous month Change over 12 monthsWPI all commoditiesSource
Sep 2026150.20 +0.7 +2.95 % 172.1 linked (2022-23 × 1.4470)
Aug 2026149.50 +0.2 +2.68 % 169.5 linked (2022-23 × 1.4470)
Jul 2026149.30 +0.5 +2.26 % 168.3 linked (2022-23 × 1.4470)
Jun 2026148.80 -0.1 +2.13 % 168.8 linked (2022-23 × 1.4470)
May 2026148.90 +0.5 +2.06 % 168.5 linked (2022-23 × 1.4470)
Apr 2026148.40 +1.5 +1.99 % 167.6 OEA
Mar 2026146.90 +0.9 +1.45 % 161.2 OEA
Feb 2026146.00 +0.6 +0.62 % 158.4 OEA
Jan 2026145.40 -0.7 +0.28 % 157.6 OEA
Dec 2025146.10 -0.3 +1.46 % 157.2 OEA
Nov 2025146.40 +0.2 +1.60 % 156.2 OEA
Oct 2025146.20 +0.3 +1.88 % 155.1 OEA
Sep 2025145.90 +0.3 +1.25 % 155.0 OEA
Aug 2025145.60 -0.4 +0.55 % 155.2 OEA
Jul 2025146.00 +0.3 +0.90 % 154.4 OEA
Jun 2025145.70 -0.2 +1.18 % 153.7 OEA
May 2025145.90 +0.4 +1.32 % 153.7 OEA
Apr 2025145.50 +0.7 +1.39 % 154.2 OEA
Mar 2025144.80 -0.3 +0.98 % 154.8 OEA
Feb 2025145.10 +0.1 +0.83 % 154.9 OEA
Jan 2025145.00 +1.0 +1.40 % 155.0 OEA
Dec 2024144.00 -0.1 - 155.7 OEA
Nov 2024144.10 +0.6 - 156.4 OEA
Oct 2024143.50 -0.6 - 156.7 OEA
Sep 2024144.10 -0.7 - 154.7 OEA
Aug 2024144.80 +0.1 - 154.4 OEA
Jul 2024144.70 +0.7 - 155.3 OEA
Jun 2024144.00 0.0 - 154.0 OEA
May 2024144.00 +0.5 - 153.5 OEA
Apr 2024143.50 +0.1 - 152.9 OEA
Mar 2024143.40 -0.5 - 151.4 OEA
Feb 2024143.90 +0.9 - 151.2 OEA
Jan 2024143.00 - - 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.