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@PolicyEngine

PolicyEngine

Our free open-source software platform computes the impact of public policy.

PolicyEngine is a nonprofit with the mission to compute the impact of public policy for the world.

Our free, open-source software models the tax and benefit systems in the US and UK, using our microsimulation framework based on OpenFisca, enhances representative survey microdata for macroeconomic analysis, and makes those available as Python packages, APIs, or web apps. The PolicyEngine web app lets users design custom tax-benefit reforms and see how they would affect the population (budget, poverty, and inequality) and individual households (net income and marginal tax rates). Users can also skip the policy reform and estimate their tax liability and benefit eligibility under current law.

We welcome contributions to our repositories, especially our core ones:

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  1. policyengine-uk policyengine-uk Public

    An open-source static tax-benefit microsimulation model for the UK.

    Python 34 29

  2. policyengine-us policyengine-us Public

    The PolicyEngine US Python package contains a rules engine of the US tax-benefit system, and microdata generation for microsimulation analysis.

    Python 109 192

Repositories

Showing 10 of 101 repositories
  • policyengine-us-data Public

    A package to create representative microdata for PolicyEngine US.

    PolicyEngine/policyengine-us-data’s past year of commit activity
    Python 2 7 79 7 Updated Jun 12, 2025
  • PolicyEngine/policyengine-api-v2’s past year of commit activity
    Python 0 1 44 2 Updated Jun 12, 2025
  • PolicyEngine/policyengine-household-api’s past year of commit activity
    Python 1 AGPL-3.0 2 17 11 Updated Jun 12, 2025
  • policyengine-api Public

    PolicyEngine's REST API for computing policy impacts.

    PolicyEngine/policyengine-api’s past year of commit activity
    Python 12 AGPL-3.0 35 111 (7 issues need help) 26 Updated Jun 12, 2025
  • policyengine-us Public

    The PolicyEngine US Python package contains a rules engine of the US tax-benefit system, and microdata generation for microsimulation analysis.

    PolicyEngine/policyengine-us’s past year of commit activity
    Python 109 AGPL-3.0 192 1,052 (19 issues need help) 114 Updated Jun 12, 2025
  • policyengine-uk Public

    An open-source static tax-benefit microsimulation model for the UK.

    PolicyEngine/policyengine-uk’s past year of commit activity
    Python 34 AGPL-3.0 29 249 (1 issue needs help) 2 Updated Jun 12, 2025
  • microimpute Public

    Repository for benchmarking different imputation methods for survey data.

    PolicyEngine/microimpute’s past year of commit activity
    Jupyter Notebook 0 2 5 1 Updated Jun 12, 2025
  • hr1-tax-benefit-impacts-case-study Public

    A breakdown of the impacts of the HR1 provisions including tax and benefit impacts

    PolicyEngine/hr1-tax-benefit-impacts-case-study’s past year of commit activity
    Python 0 2 4 4 Updated Jun 11, 2025
  • code-snippets Public

    A home for code snippets and fragments relevant to the team

    PolicyEngine/code-snippets’s past year of commit activity
    Python 0 MIT 0 1 0 Updated Jun 11, 2025
  • us-sources Public

    Source documents for federal US policies.

    PolicyEngine/us-sources’s past year of commit activity
    0 Unlicense 4 8 2 Updated Jun 11, 2025

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