The ESANE system combines administrative data and survey data collected from a sample of entreprises (Annual Sector Surveys, in French, Enquêtes Sectorielles Annuelles / ESA) to produce structural business statistics. The administrative data come from annual tax returns that companies provide to the tax authorities, and from annual social data that supply information on the employees. Set up in 2009 on fiscal year 2008, this system replaced the previous one which was consisting in two parts with the Annual Business Surveys (Enquêtes Annuelles d'Entreprises / EAE) and the Unified Corporate Statistics System (Système Unifié de Statistiques d'Entreprises / SUSE), by unifying them.
From fiscal year 2008, SUSE was replaced by the ESANE system. As SUSE, ESANE performs exhaustive exploitation of tax data reported by the entreprises to the Central Tax Office (Direction Générale des Impôts / DGI), completed by ESA (new EAE surveys) and, if necessary, by other information, but using a new method.
"Composite aggregates" are calculated using a statistical estimation procedure that "composes" a synthesis of tax data and survey data.
The change of system generates breaks at the level of results produced by the previous system, for three main reasons. The questionnaire of the ESANE surveys was redesigned, which may have lead to some changes in the answering behaviour of entreprises. The combined use of survey data and administrative data, in particular the confrontation of the available information in both sources on the breakdown of turnover by activities, required the implementation of new statistical estimation methods. Then, the data are published based on the NACE Rev. 2 classification while the previous results were published by NACE Rev. 1.