Step 2 of 4 · ProjectsTax engines
PolicyEngine Core
Core microsimulation engine for PolicyEngine models, forked from OpenFisca Core.
What it does
The microsimulation engine under the PolicyEngine country models: the parameter tree, variable system and reform machinery each country package builds on, forked from OpenFisca-Core. It is a Python package (3.11 to 3.14) installed with pip; the README says most users reach it through a country model and import it directly only to build a new one, write a reform or extend the core. AGPL licence.
Where it fits on the map
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Maintain this project?
Link to this page from your README, so readers find the facts, the notes and where it fits. The badge is a small SVG served from this site.
[](https://tax-oss.com/projects/policyengine-core/)