OpenFisca

The most widely adopted free and open-source engine to write Rules as Code

Contributors


Events

OpenFisca is hosting the following events.

Past event
01:30 PM-04:00 PM UTC
Meet fellow OpenFisca users and contributors

Attended by


Past event
08:00 AM-10:30 AM UTC
Be part of the official start of the next stage for the OpenFisca community!

Attended by


OpenFisca is all of us

Our contributors 40

Thank you for supporting OpenFisca.

Salsa Digital

Admin

€3,306 EUR

Mahdi Ben Jel...

Admin

€90 EUR

OpenFisca since 2011

Support

Core Contributor

Antoine Bozio

Legal entities users

€8,000 EUR

The Tides Fou...

€4,594 EUR

Codeur·euses ...

Service providers

€1,000 EUR

Assemblic

Service providers

€1,000 EUR

multi

Donation

€860 EUR

Verb

Service providers

€550 EUR

ESTHER

Individuals

€295 EUR

Budget


Transparent and open finances.

Expenses

All time

Expenses paid

12

Amount disbursed

€12,864.79

Tags# of ExpensesAmount
no tag
12€12,864.79

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Contributions

All time

Contributions received

39

Amount collected

€21,340.20

Tiers# of ContributionsAmount
one-time
6€11,010.05
recurring
33€10,330.15

View all contributions

About


The most widely adopted free and open-source engine to write rules as code

Government departments, lawmakers and civil society finally share a common language to debate and activate social and fiscal policies: OpenFisca enables collaboratively modelling laws and regulations and making them computable over open APIs for developers, datascientists and researchers.

Policy experts and governments

OpenFisca enables institutions to efficiently share regulation updates and to pool IT costs. Interconnecting rules across public bodies in the form of legible parameters and executable code provides algorithmic transparency and reduces the bill for the taxpayer.

Developers and datascientists

OpenFisca enables developers to easily deliver apps calculating complex taxes and benefits through its JSON web API, and datascientists to compute large-scale through its vectorial Python API. Contributing formulas and coding extensions enables building services for any business.

Economists and researchers

OpenFisca enables economists and researchers to use survey and administrative data to simulate the impact of any past or future reform on the income distribution of a given population. Linking all computed taxes and benefits enables analysing how multiple reforms interact.

International recognition

  • OpenFisca is recommended by the OECD to enable “better policy outcomes and enhanced service delivery”.
  • Received the Edge of Government Innovation Award 2023 at the World Government Summit
  • Received the Most Innovative Open-Source Software Award 2019 by the European Commission
  • Recognised as a Digital Public Good by the United Nations Development Programme (UNDP), UNICEF and Norad.

Learn all about OpenFisca on openfisca.org!