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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 35 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 115 193

Repositories

Showing 10 of 110 repositories
  • PolicyEngine/policyengine-api-v2’s past year of commit activity
    Python 0 AGPL-3.0 1 41 3 Updated Aug 5, 2025
  • policyengine-uk-data Public

    Repository creating UK microdata.

    PolicyEngine/policyengine-uk-data’s past year of commit activity
    Python 0 2 29 1 Updated Aug 5, 2025
  • microimpute Public

    Repository for benchmarking different imputation methods for survey data.

    PolicyEngine/microimpute’s past year of commit activity
    Jupyter Notebook 0 2 11 1 Updated Aug 5, 2025
  • 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 9 90 9 Updated Aug 5, 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 35 AGPL-3.0 29 213 (1 issue needs help) 8 Updated Aug 5, 2025
  • policyengine-app-v2 Public

    The second iteration of PolicyEngine's free web app for computing the impact of public policy. Currently under development.

    PolicyEngine/policyengine-app-v2’s past year of commit activity
    TypeScript 1 0 32 1 Updated Aug 4, 2025
  • policyengine-api Public

    PolicyEngine's REST API for computing policy impacts.

    PolicyEngine/policyengine-api’s past year of commit activity
    Python 13 AGPL-3.0 34 111 (5 issues need help) 25 Updated Aug 5, 2025
  • PolicyEngine/policyengine-household-api’s past year of commit activity
    Python 1 AGPL-3.0 2 18 37 Updated Aug 4, 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 115 AGPL-3.0 193 1,078 (19 issues need help) 105 Updated Aug 4, 2025
  • policyengine-app Public

    PolicyEngine's free web app for computing the impact of public policy.

    PolicyEngine/policyengine-app’s past year of commit activity
    Jupyter Notebook 58 AGPL-3.0 141 391 (2 issues need help) 27 Updated Aug 4, 2025

People

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