The revised Syntec index measures changes in the cost of services in the engineering, IT services, research and consulting recruitment, and professional training sectors.
Its value reflects the evolution of salary costs (including charges). It is used, in particular, to index contracts for fixed-price projects, IT management, or software maintenance.
The revised Syntec index is calculated and published by the Syntec Federation (not INSEE) or by paying services such as “Le moniteur”.
It has been published since September 2022, replacing the old Syntec index.
Only the Syntec Federation will now monitor and publish the revised Syntec index. A “connection coefficient” has been calculated, equal to the ratio of the value of the Revised Index of August 2022 and the last computed value of the old index, similar to 0.97975, i.e. (280.6 / 286.4).
This adjustment coefficient may be necessary for contractual reasons.
Contents
Syntec 2023 Index
| Month & Year | Date of publication (or expected date of publication) | Revised Syntec Index | Change over 12 consecutive months in the revised index | Change / previous month of the revised index | Old Syntec index | Value to be used for contracts signed before August 2022 (revised index adjusted for the connection coefficient) | Change over 12 consecutive months of the old Syntec index | Variation / previous month of the old Syntec index |
| December 2023 | 2024-01-31 | 310.1 | 5.98% | 1.01% | N/A | 303.8 | 5.99% | 1.01% |
| November 2023 | 2023-12-29 | 307.0 | 5.90% | 0.10% | 300.8 | 5.91% | 0.10% | |
| October 2023 | 2023-11-30 | 306.7 | 5.98% | 0.23% | 300.5 | 5.99% | 0.23% | |
| September 2023 | 2023-10-31 | 306.0 | 6.55% | 0.10% | 299.8 | 6.54% | 0.10% | |
| August 2023 | 2023-09-29 | 305.7 | 6.74% | 0.30% | 299.5 | 6.74% | 0.30% | |
| July 2023 | 2023-08-31 | 304.8 | 6.65% | 0.26% | 298.6 | 6.50% | 0.26% | |
| June 2023 | 2023-07-31 | 304.0 | 6.78% | 0.43% | 297.8 | 6.37% | 0.43% | |
| May 2023 | 2023-06-30 | 302.7 | 6.36% | 0.36% | 296.6 | 5.92% | 0.26% | |
| April 2023 | 2023-05-31 | 301.9 | 6.38% | 0.40% | 295.8 | 5.71% | 0.40% | |
| March 2023 | 2023-04-28 | 300.7 | 5.66% | 0.74% | 294.6 | 5.26% | 0.74% | |
| February 2023 | 2023-03-31 | 298.5 | 5.55% | 1.57% | 292.5 | 5.12% | 1.57% | |
| January 2023 | 2023-02-28 | 293.9 | 4.29% | 0.44% | 287.9 | 3.77% | 0.44% | |
| December 2022 | 2023-01-31 | 292.6 | 4.24% | 0.93% | 286.7 | 3.39% | 0.95% | |
| November 2022 | 2022-12-30 | 289.9 | 3.42% | 0.17% | 284.0 | 2.56% | 0.18% | |
| October 2022 | 2022-11-30 | 289.4 | 3.36% | 0.77% | 283.5 | 2.46% | 0.75% | |
| September 2022 | 2022-10-31 | 287.2 | 2.57% | 0.28% | 281.4 | 1.77% | 0.29% | |
| August 2022 | 2022-09-30 | 286.4 | 2.36% | 0.21% | 280.6 | 1.48% | 0.07% | |
| July 2022 | 2022-08-31 | 285.8 | 2.33% | 0.39% | 280.4 | 0.0 | 1.67% | 0.14% |
| June 2022 | 2022-07-29 | 284.7 | 2.37% | 0.04% | 280.0 | 0.0 | 1.56% | 0.00% |
| May 2022 | 2022-06-30 | 284.6 | 2.71% | 0.28% | 280.0 | 0.0 | 1.71% | 0.07% |
| April 2022 | 2022-05-31 | 283.8 | 2.49% | -0.28% | 279.8 | 0.0 | 1.71% | -0.04% |
| March 2022 | 2022-04-29 | 284.6 | 3.15% | 0.64% | 279.9 | 0.0 | 1.93% | 0.61% |
| February 2022 | 2022-03-31 | 282.8 | 2.24% | 0.35% | 278.2 | 0.0 | 1.13% | 0.25% |
| January 2022 | 2022-02-28 | 281.8 | 2.14% | 0.39% | 277.5 | 0.0 | 0.91% | 0.07% |
| December 2021 | 2022-01-31 | 280.7 | 1.74% | 0.14% | 277.3 | 0.0 | 0.84% | 0.14% |
| November 2021 | 2021-12-31 | 280.3 | 1.89% | 0.11% | 276.9 | 0.0 | 0.76% | 0.07% |
| October 2021 | 2021-11-30 | 280.0 | 1.89% | 0.00% | 276.7 | 0.0 | 0.84% | 0.07% |
| September 2021 | 2021-10-29 | 280.0 | 1.74% | 0.07% | 276.5 | 0.0 | 0.47% | 0.00% |
| August 2021 | 2021-09-30 | 279.8 | 1.67% | 0.18% | 276.5 | 0.0 | 0.77% | 0.25% |
| July 2021 | 2021-08-31 | 279.3 | 1.34% | 0.43% | 275.8 | 0.0 | 0.33% | 0.04% |
| June 2021 | 2021-07-30 | 278.1 | 0.91% | 0.36% | 275.7 | 0.0 | 0.29% | 0.15% |
| May 2021 | 2021-06-30 | 277.1 | 0.54% | 0.07% | 275.3 | 0.0 | 0.04% | 0.07% |
| April 2021 | 2021-05-31 | 276.9 | 0.65% | 0.36% | 275.1 | 0.0 | 0.00% | 0.18% |
| March 2021 | 2021-04-30 | 275.9 | 0.22% | -0.25% | 274.6 | 0.0 | -0.25% | -0.18% |
| February 2021 | 2021-03-31 | 276.6 | 0.80% | 0.25% | 275.1 | 0.0 | 0.15% | 0.04% |
| January 2021 | 2021-02-26 | 275.9 | 0.44% | 0.00% | 275.0 | 0.0 | 0.04% | 0.00% |
How to use the SYNTEC index?
Rule:
The prices of the service contract may be revised at each contract expiration date according to a formula that integrates the evolution of the Syntec index. The reference index used will be that of November (example).
The formula for applying the Syntec 2023 index:
[New Price (P1)] = [Old Price (P0)] X [Known Reference Syntec Index (S1)] / [Reference Syntec Index (S0)] :
Tip:
For price revisions on the first of January of each year, it is advisable for practical reasons to take the November or October Syntec index as a baseline. Indeed, the December index is only known at the end of the following January, which is late for the application of contractual price increases.
The values in this table will be updated as the index is published during the year 2023.
