Syntec index for January 2026

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%

Syntec Index January 2026

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:

All revised and historical Syntec index values for 2026

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.

Official Syntec Index — Publication on February 27, 2026, of the Syntec index for January 2026

The Ministry of Economics and Finance in France has recognized the Syntec index since March 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

What is the Syntec Index?

The Syntec Index is a French economic indicator primarily used to adjust contract prices for intellectual services, particularly in engineering, IT services, consulting, and research and development. It is used, in particular, to adjust the prices of services on long-term contracts to account for cost fluctuations.

What is the value of the Syntec index for January 2026?

The value of the Syntec index for January 2026 is 323.1. It is up +2.51% over one year (January 2025 base) and up +0.15% compared to December 2025 (the previous month). The revised index corrected by the connection coefficient stands at 316.6.

How do you integrate the Syntec Index into a contract?

To integrate the Syntec Index into a contract, a price adjustment clause must be included that specifies that prices will be periodically adjusted based on changes in the Syntec Index. The adjustment frequency and the calculation formula must also be defined.

Can the Syntec Index decrease?

Yes, although rare, the Syntec Index can decrease if the costs of intellectual services decrease. This can occur when there are significant reductions in salaries, social charges, or operating costs for the relevant companies. It may decrease from one month to the next, but rarely in the annual trend.

Are there alternatives to the Syntec Index?

Economic indices, such as the Consumer Price Index (CPI) and the Producer Price Index (PPI), can be used to adjust contract prices. However, the Syntec Index is designed explicitly for intellectual services and is most relevant to this sector.

When is the Syntec Index published?

The Syntec Index is published monthly, usually at the end of each month, with a one-month lag.

Syntec Index History

Find all the values of the Syntec index since 2014:

Syntec Index History:

History of the Syntec index, a tool for measuring labor costs

What’s your opinion on the evolution of the Syntec index?

Tell us in the comments. THANKS.

The Syntec Index for January 2026 has been released