Install

What to install?

Depending on your usage you'll want to install some parts of OpenFisca, or none:

• If you need to implement some parts of the legislation as OpenFisca formulas, or fill some values for parameters of the legislation, you'll want to install OpenFisca-France.
• If you're developing a web application and need to trigger a computation, you won't need to install anything. Just send an AJAX request to the public Web API.
  • But if you generate too much traffic we ask you to deploy your own version of the web API. This happens with important applications like https://mes-aides.gouv.fr/

For which use ?

Furthermore you might use OpenFisca with two different approaches:

• if you're more an economist who just wants to do some tax simulations, or implement your own fiscal reforms, follow the instructions in section "Basic Use".

• if you want to contribute to the source code and to develop and/or fix part of it, you will have to install OpenFisca on your machine. Just follow the section "For Developers".