Repositories list

• policyengine-us-data

  Public
  A package to create representative microdata for PolicyEngine US.

  Python

  •1111 forks•22 stars•115115 issues•2121 pull requests•Updated May 5, 2026May 5, 2026

• policyengine-api

  Public
  PolicyEngine's REST API for computing policy impacts.

  Python

  •

  GNU Affero General Public License v3.0

  •3434 forks•1717 stars•127127 issues•151151 pull requests•Updated May 5, 2026May 5, 2026

• policyengine-api-v2

  Public
  Python

  •

  GNU Affero General Public License v3.0

  •11 fork•11 star•5050 issues•66 pull requests•Updated May 5, 2026May 5, 2026

• policyengine-uk-data

  Public
  Repository creating UK microdata.

  Python

  •22 forks•11 star•2727 issues•1010 pull requests•Updated May 5, 2026May 5, 2026

• policyengine-api-v2-alpha

  Public
  Testing out a reduced APIv2 as a middle ground

  Python

  •00 forks•00 stars•1414 issues•162162 pull requests•Updated May 5, 2026May 5, 2026

• working-parents-tax-relief-act

  Public
  PolicyEngine dashboard for the Working Parents Tax Relief Act of 2026

  TypeScript

  •11 fork•00 stars•11 issue•11 pull request•Updated May 5, 2026May 5, 2026

• policyengine-app-v2

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

  HTML

  •33 forks•11 star•151151 issues•3131 pull requests•Updated May 5, 2026May 5, 2026

• nj-ctc-eitc-expansion

  Public
  Dashboard modeling the NJ Cash Alliance coalition's CTC + EITC expansion proposal

  TypeScript

  •00 forks•00 stars•00 issues•00 pull requests•Updated May 5, 2026May 5, 2026

• policyengine-us

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

  pythontaxpolicy+ 6

  pythontaxpolicyeconomicsunited-statespublic-policyinequalitypovertyeconomic-policy

  Python

  •

  GNU Affero General Public License v3.0

  •207207 forks•144144 stars•1.1k1.1k issues•3535 pull requests•Updated May 5, 2026May 5, 2026

• policyengine-household-api

  Public
  Python

  •

  GNU Affero General Public License v3.0

  •33 forks•11 star•2323 issues•88 pull requests•Updated May 5, 2026May 5, 2026

• us-cliff-survey

  Public
  Empirical survey of the largest income tax cliffs in the US, using PolicyEngine-US to sweep earnings across archetypes and households.

  Python

  •00 forks•00 stars•00 issues•00 pull requests•Updated May 5, 2026May 5, 2026

• Coverage-Compass

  Public
  Python

  •00 forks•00 stars•00 issues•00 pull requests•Updated May 5, 2026May 5, 2026

• uk-land-value-tax

  Public
  Interactive dashboard modelling the impact of replacing council tax with a land value tax in the UK

  JavaScript

  •00 forks•00 stars•00 issues•22 pull requests•Updated May 5, 2026May 5, 2026

• south-carolina-2026-tax-changes

  Public
  PolicyEngine dashboard for South Carolina's 2026 tax changes (H.4216)

  TypeScript

  •00 forks•00 stars•00 issues•00 pull requests•Updated May 5, 2026May 5, 2026

• newsletters

  Public
  Newsletters

  HTML

  •

  GNU Affero General Public License v3.0

  •11 fork•00 stars•00 issues•44 pull requests•Updated May 5, 2026May 5, 2026

• california-wealth-tax

  Public
  Interactive tool analyzing fiscal impacts of California's proposed billionaire wealth tax under varying assumptions

  HTML

  •00 forks•00 stars•00 issues•00 pull requests•Updated May 5, 2026May 5, 2026

• policyengine-uk

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

  pythonunited-kingdomtax+ 7

  pythonunited-kingdomtaxpolicyeconomicspublic-policyinequalitypovertypsl-catalogedeconomic-policy

  Python

  •

  GNU Affero General Public License v3.0

  •3232 forks•4242 stars•145145 issues•33 pull requests•Updated May 5, 2026May 5, 2026

• policyengine-uk-chat

  Public
  UK tax and benefit policy chat assistant powered by PolicyEngine and Claude

  TypeScript

  •11 fork•11 star•00 issues•44 pull requests•Updated May 5, 2026May 5, 2026

• policyengine-ads-dashboard

  Public
  Public transparency dashboard for PolicyEngine advertising performance

  JavaScript

  •00 forks•00 stars•00 issues•00 pull requests•Updated May 5, 2026May 5, 2026

• qbi-visualizer

  Public
  Qualified Business Income Deduction (§199A) calculator and implementation visualizer powered by PolicyEngine US

  TypeScript

  •00 forks•00 stars•00 issues•00 pull requests•Updated May 5, 2026May 5, 2026

• taxsim-emulator-demo-day-slides

  Public
  Demo day slide deck for the PolicyEngine TAXSIM Emulator

  TypeScript

  •00 forks•00 stars•00 issues•00 pull requests•Updated May 4, 2026May 4, 2026

• nc-stein-2027-tax-proposals

  Public
  Dashboard for NC Gov. Josh Stein's FY2026-27 Budget tax proposals

  TypeScript

  •00 forks•00 stars•00 issues•00 pull requests•Updated May 4, 2026May 4, 2026

• wv-sb392-tax-cut

  Public
  Dashboard modeling West Virginia's SB 392 (2026) income tax rate cut

  TypeScript

  •00 forks•00 stars•00 issues•00 pull requests•Updated May 4, 2026May 4, 2026

• policyengine-core

  Public
  Core microsimulation engine for PolicyEngine models. Forked from OpenFisca-Core.

  frameworktaxmicrosimulation+ 1

  frameworktaxmicrosimulationbenefit

  Python

  •

  GNU Affero General Public License v3.0

  •2727 forks•1717 stars•107107 issues•22 pull requests•Updated May 4, 2026May 4, 2026

• policyengine.py

  Public
  PolicyEngine's main user-facing Python package, incorporating country packages and integrating data visualization and analytics.

  pythonmodeltax-benefit

  pythonmodeltax-benefit

  Python

  •

  GNU Affero General Public License v3.0

  •88 forks•55 stars•2525 issues•1515 pull requests•Updated May 4, 2026May 4, 2026

• missouri-income-tax-elimination

  Public
  PolicyEngine dashboard exploring paths to eliminate Missouri's state income tax (HJR 173 & 174)

  TypeScript

  •00 forks•00 stars•00 issues•11 pull request•Updated May 4, 2026May 4, 2026

• cliff-watch

  Public
  JavaScript

  •

  MIT License

  •00 forks•00 stars•11 issue•11 pull request•Updated May 4, 2026May 4, 2026

• github-wrapped

  Public
  Year in Code: PolicyEngine team GitHub activity for self-reviews

  JavaScript

  •00 forks•00 stars•00 issues•00 pull requests•Updated May 4, 2026May 4, 2026

• council-tax-ctr-map

  Public
  TypeScript

  •00 forks•00 stars•00 issues•00 pull requests•Updated May 4, 2026May 4, 2026

• policyengine-slides

  Public
  Monorepo for PolicyEngine presentation slide decks

  TypeScript

  •00 forks•00 stars•00 issues•11 pull request•Updated May 3, 2026May 3, 2026