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 man-made fibres [1310080000] Manufactured products

Linked values: from May 2026 = WPI 2022-23 [1310080000] x 1.1182 (item linking factor, ratio of FY 2024-25 geometric means).

MonthIndexChange on previous month Change over 12 monthsWPI all commoditiesSource
Sep 2026138.80 +10.5 +35.15 % 172.1 linked (2022-23 × 1.1182)
Aug 2026128.30 +5.2 +24.44 % 169.5 linked (2022-23 × 1.1182)
Jul 2026123.10 -1.8 +18.94 % 168.3 linked (2022-23 × 1.1182)
Jun 2026124.90 +2.0 +21.14 % 168.8 linked (2022-23 × 1.1182)
May 2026122.90 +11.0 +21.32 % 168.5 linked (2022-23 × 1.1182)
Apr 2026111.90 +3.4 +9.81 % 167.6 OEA
Mar 2026108.50 +6.1 +4.03 % 161.2 OEA
Feb 2026102.40 +0.6 -2.29 % 158.4 OEA
Jan 2026101.80 +1.2 -2.77 % 157.6 OEA
Dec 2025100.60 -0.3 -3.18 % 157.2 OEA
Nov 2025100.90 -1.1 -2.04 % 156.2 OEA
Oct 2025102.00 -0.7 -0.78 % 155.1 OEA
Sep 2025102.70 -0.4 -1.82 % 155.0 OEA
Aug 2025103.10 -0.4 -3.55 % 155.2 OEA
Jul 2025103.50 +0.4 -3.27 % 154.4 OEA
Jun 2025103.10 +1.8 -3.82 % 153.7 OEA
May 2025101.30 -0.6 -3.43 % 153.7 OEA
Apr 2025101.90 -2.4 -2.86 % 154.2 OEA
Mar 2025104.30 -0.5 +0.68 % 154.8 OEA
Feb 2025104.80 +0.1 +1.35 % 154.9 OEA
Jan 2025104.70 +0.8 +2.35 % 155.0 OEA
Dec 2024103.90 +0.9 - 155.7 OEA
Nov 2024103.00 +0.2 - 156.4 OEA
Oct 2024102.80 -1.8 - 156.7 OEA
Sep 2024104.60 -2.3 - 154.7 OEA
Aug 2024106.90 -0.1 - 154.4 OEA
Jul 2024107.00 -0.2 - 155.3 OEA
Jun 2024107.20 +2.3 - 154.0 OEA
May 2024104.90 0.0 - 153.5 OEA
Apr 2024104.90 +1.3 - 152.9 OEA
Mar 2024103.60 +0.2 - 151.4 OEA
Feb 2024103.40 +1.1 - 151.2 OEA
Jan 2024102.30 - - 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.