OpenFisca

Write rules as code

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Calculate citizens' rights

From an individual situation, calculate any rule of a tax and benefit system.

Mes Aides
Mes Aides uses OpenFisca and its Web API to inform French citizens on their eligibility to national and local benefits.
Les mes ajudes
Les meves ajudes uses OpenFisca and its Web API to inform Barcelona citizens on their eligibility to social benefits.

Evaluate the impact of public policy

Compare the legislation now to what it could be.

LexImpact
LexImpact uses OpenFisca and its Python API to evaluate the impact of public policy on households, thanks to a simulator dedicated to the income tax.

Comment appréhender le coût d’un revenu de base ?
Publication of the French Movement for a Basic Income that uses OpenFisca and its Python API to evaluate the cost and benefits of a reform introducing a basic income in France.

Explore the Rules

Model any kind of government rule, explore them and evaluate who is eligible to what.

Rapu Ture - Exploring the Rules
Rapu Ture (Exploring the Rules) is a web interface to explore the rules in New Zealand's Openfisca built from government legislation, regulation and some policies.
New South Wales's Legislation Explorer
New South Wales uses OpenFisca and its Legislation Explorer to allow citizens, civil servants, policy officers and developers to explore government rules.
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