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 Salem (Tamil Nadu) Tamil Nadu

MonthIndexChange on previous month Change over 12 monthsAll IndiaSource
Aug 2026151.60 +0.4 +4.05 % 154.4 Labour Bureau
Jul 2026151.20 -0.2 +3.28 % 153.2 Labour Bureau
Jun 2026151.40 +0.5 +4.63 % 151.9 Labour Bureau
May 2026150.90 +3.0 +5.60 % 150.8 Labour Bureau
Apr 2026147.90 +0.8 +4.89 % 149.9 Labour Bureau
Mar 2026147.10 -1.7 +3.66 % 149.1 Labour Bureau
Feb 2026148.80 -0.1 +5.23 % 148.5 Labour Bureau
Jan 2026148.90 -0.2 +4.64 % 148.6 Labour Bureau
Dec 2025149.10 +0.6 +4.27 % 148.2 Labour Bureau
Nov 2025148.50 +3.4 +4.95 % 148.2 Labour Bureau
Oct 2025145.10 +0.6 +2.33 % 147.7 Labour Bureau
Sep 2025144.50 -1.2 +3.29 % 147.3 Labour Bureau
Aug 2025145.70 -0.7 +4.67 % 147.1 Labour Bureau
Jul 2025146.40 +1.7 +3.76 % 146.5 Labour Bureau
Jun 2025144.70 +1.8 +2.92 % 145.0 Labour Bureau
May 2025142.90 +1.9 +1.78 % 144.0 Labour Bureau
Apr 2025141.00 -0.9 +2.92 % 143.5 Labour Bureau
Mar 2025141.90 +0.5 +4.96 % 143.0 Labour Bureau
Feb 2025141.40 -0.9 +3.44 % 142.8 Labour Bureau
Jan 2025142.30 -0.7 +3.79 % 143.2 Labour Bureau
Dec 2024143.00 +1.5 - 143.7 Labour Bureau
Nov 2024141.50 -0.3 - 144.5 Labour Bureau
Oct 2024141.80 +1.9 - 144.5 Labour Bureau
Sep 2024139.90 +0.7 - 143.3 Labour Bureau
Aug 2024139.20 -1.9 - 142.6 Labour Bureau
Jul 2024141.10 +0.5 - 142.7 Labour Bureau
Jun 2024140.60 +0.2 - 141.4 Labour Bureau
May 2024140.40 +3.4 - 139.9 Labour Bureau
Apr 2024137.00 +1.8 - 139.4 Labour Bureau
Mar 2024135.20 -1.5 - 138.9 Labour Bureau
Feb 2024136.70 -0.4 - 139.2 Labour Bureau
Jan 2024137.10 - - 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.