The revised Syntec index (base 100 in 1961) for January 2026 was published on February 27, 2026.
The value of the Syntec index for January 2026 is 323.1 to 315.2, up from 315.2 in January 2025, an annual increase of +2.51 % over 12 months. It’s up 0.15% from the previous month (314.8 in December 2025).
Contents
Table of changes in the Syntec index for January 2026
| January 2026 Syntec Index | December 2025 Syntec Index | January 2025 Syntec Index | |
| Syntec index value | 323.1 | 314.8 | 315.2 |
| Change in % from the base | Up 0.15% | Up 2.51% |
The official source is Syntec Federation (not INSEE).
The value for the month of January 2026 to be used for contracts signed before August 2022 (revised index corrected by the connection coefficient) is: 316.6.
Our Syntec Index 2026 table has been updated here:
Revised Syntec Index corrected for the adjustment coefficient and monthly and annual percentage changes:
The Syntec index reflects the evolution of salary costs (mainly intellectual services) of companies in the professional branches of the Syntec Federation:
- “Syntec IT“,
- “Syntec Engineering“,
- “Syntec Group of Study and Consulting Unions“.
It is mainly used to update the financial clauses of engineering, contracted personnel, maintenance, and IT contracts. Its value is calculated each month based on a survey of representative companies.
The Ministry of Economics and Finance in France has recognized the Syntec index since November 11, 1974. It is updated and published at the end of each month, with a one-month lag. The following index will be released around March 31, 2026: the Syntec February 2026 index.
For companies in the technology and services sector, the Syntec Index is an essential tool for maintaining fair contracts aligned with actual costs. It provides an objective basis for price reviews and helps protect against unforeseen cost variations.
Frequently Asked Questions (FAQ) on the Syntec Index of January 2026
Syntec Index History
Find all the values of the Syntec index since 2014:
Syntec Index History:
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