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 Phosphorite [1103020001] Primary articles

Linked values: from May 2026 = WPI 2022-23 [1103020001] x 2.7328 (item linking factor, ratio of FY 2024-25 geometric means).

MonthIndexChange on previous month Change over 12 monthsWPI all commoditiesSource
Sep 2026294.00 +26.2 +15.52 % 172.1 linked (2022-23 × 2.7328)
Aug 2026267.80 -1.1 +5.27 % 169.5 linked (2022-23 × 2.7328)
Jul 2026268.90 -14.5 +5.99 % 168.3 linked (2022-23 × 2.7328)
Jun 2026283.40 +22.7 +13.09 % 168.8 linked (2022-23 × 2.7328)
May 2026260.70 +1.5 +4.16 % 168.5 linked (2022-23 × 2.7328)
Apr 2026259.20 -1.7 +0.15 % 167.6 OEA
Mar 2026260.90 -2.6 -6.05 % 161.2 OEA
Feb 2026263.50 +1.0 -8.54 % 158.4 OEA
Jan 2026262.50 +1.6 -4.51 % 157.6 OEA
Dec 2025260.90 +0.6 -8.84 % 157.2 OEA
Nov 2025260.30 +4.0 -5.41 % 156.2 OEA
Oct 2025256.30 +1.8 -7.41 % 155.1 OEA
Sep 2025254.50 +0.1 -2.86 % 155.0 OEA
Aug 2025254.40 +0.7 -6.33 % 155.2 OEA
Jul 2025253.70 +3.1 -11.26 % 154.4 OEA
Jun 2025250.60 +0.3 -2.57 % 153.7 OEA
May 2025250.30 -8.5 -4.97 % 153.7 OEA
Apr 2025258.80 -18.9 +0.62 % 154.2 OEA
Mar 2025277.70 -10.4 +7.97 % 154.8 OEA
Feb 2025288.10 +13.2 -3.16 % 154.9 OEA
Jan 2025274.90 -11.3 -9.33 % 155.0 OEA
Dec 2024286.20 +11.0 - 155.7 OEA
Nov 2024275.20 -1.6 - 156.4 OEA
Oct 2024276.80 +14.8 - 156.7 OEA
Sep 2024262.00 -9.6 - 154.7 OEA
Aug 2024271.60 -14.3 - 154.4 OEA
Jul 2024285.90 +28.7 - 155.3 OEA
Jun 2024257.20 -6.2 - 154.0 OEA
May 2024263.40 +6.2 - 153.5 OEA
Apr 2024257.20 0.0 - 152.9 OEA
Mar 2024257.20 -40.3 - 151.4 OEA
Feb 2024297.50 -5.7 - 151.2 OEA
Jan 2024303.20 - - 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.