OpenFisca
type: DataService
description: ### Calculer le droit OpenFisca est un moteur de calcul libre et ouvert qui permet de modéliser le système socio-fiscal de manière collaborative et transparente. Il permet de calculer un grand nombre de prélèvements sociaux, prestations sociales et d'impôts, et de simuler l'impact de réformes sur…
description: OpenFisca is a free, open-source rules-as-code engine for modelling France's tax and benefit system in a collaborative and transparent way. It allows users to compute a wide range of social contributions, social benefits, and taxes based on legislative rules encoded in the platform, and to simulate the impact of reforms on households or the population. The API is published as a public data service and can be queried without authentication, supporting analysis of fiscal and social policy. @en
endpoint URL: https://api.fr.openfisca.org/latest
landing page: https://api.fr.openfisca.org/latest/spec
spatial: FRA
keyword: taxation @en
access rights: PUBLIC
issued: 2026-06-07T22:08:34.741Z
modified: 2026-08-12T01:36:28.466Z
is part of: catalog