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: Labour Bureau, Govt. of India - CPI-IW centre index (base 2016=100) - labourbureau.gov.in/centre-index. Each month's CPI-IW is released on the last working day of the following month. Values entered by hand are highlighted and kept when you update.

CPI-IW Coonoor (Tamil Nadu) Tamil Nadu

MonthIndexChange on previous month Change over 12 monthsAll IndiaSource
Aug 2026150.60 -0.6 +3.86 % 154.4 Labour Bureau
Jul 2026151.20 +1.7 +4.20 % 153.2 Labour Bureau
Jun 2026149.50 0.0 +3.68 % 151.9 Labour Bureau
May 2026149.50 +2.3 +3.82 % 150.8 Labour Bureau
Apr 2026147.20 +1.4 +3.81 % 149.9 Labour Bureau
Mar 2026145.80 -1.8 +4.29 % 149.1 Labour Bureau
Feb 2026147.60 -2.2 +6.34 % 148.5 Labour Bureau
Jan 2026149.80 0.0 +7.54 % 148.6 Labour Bureau
Dec 2025149.80 +3.0 +6.09 % 148.2 Labour Bureau
Nov 2025146.80 +1.2 +3.97 % 148.2 Labour Bureau
Oct 2025145.60 +0.2 +2.68 % 147.7 Labour Bureau
Sep 2025145.40 +0.4 +3.56 % 147.3 Labour Bureau
Aug 2025145.00 -0.1 +2.26 % 147.1 Labour Bureau
Jul 2025145.10 +0.9 +1.61 % 146.5 Labour Bureau
Jun 2025144.20 +0.2 +0.14 % 145.0 Labour Bureau
May 2025144.00 +2.2 +1.91 % 144.0 Labour Bureau
Apr 2025141.80 +2.0 +2.83 % 143.5 Labour Bureau
Mar 2025139.80 +1.0 +1.90 % 143.0 Labour Bureau
Feb 2025138.80 -0.5 +0.36 % 142.8 Labour Bureau
Jan 2025139.30 -1.9 +0.87 % 143.2 Labour Bureau
Dec 2024141.20 0.0 - 143.7 Labour Bureau
Nov 2024141.20 -0.6 - 144.5 Labour Bureau
Oct 2024141.80 +1.4 - 144.5 Labour Bureau
Sep 2024140.40 -1.4 - 143.3 Labour Bureau
Aug 2024141.80 -1.0 - 142.6 Labour Bureau
Jul 2024142.80 -1.2 - 142.7 Labour Bureau
Jun 2024144.00 +2.7 - 141.4 Labour Bureau
May 2024141.30 +3.4 - 139.9 Labour Bureau
Apr 2024137.90 +0.7 - 139.4 Labour Bureau
Mar 2024137.20 -1.1 - 138.9 Labour Bureau
Feb 2024138.30 +0.2 - 139.2 Labour Bureau
Jan 2024138.10 - - 138.9 Labour Bureau

Enter a month by hand

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.