Repositories list

• 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

  •3434 forks in PolicyEngine/policyengine-uk•5353 stars in PolicyEngine/policyengine-uk•218218 issues in PolicyEngine/policyengine-uk•4646 pull requests in PolicyEngine/policyengine-uk•Updated Oct 26, 2026Oct 26, 2026

• uk-triple-lock

  Public

  PolicyEngine/uk-triple-lock’s past year of commit activity
  State Pension triple lock vs the Prime Minister's April 2030 plan and alternatives: cost, distribution and forecast uncertainty (PolicyEngine UK).

  Python

  •

  GNU Affero General Public License v3.0

  •00 forks in PolicyEngine/uk-triple-lock•00 stars in PolicyEngine/uk-triple-lock•88 issues in PolicyEngine/uk-triple-lock•44 pull requests in PolicyEngine/uk-triple-lock•Updated Oct 26, 2026Oct 26, 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

  •217217 forks in PolicyEngine/policyengine-us•170170 stars in PolicyEngine/policyengine-us•894894 issues in PolicyEngine/policyengine-us•219219 pull requests in PolicyEngine/policyengine-us•Updated Oct 26, 2026Oct 26, 2026

• uk-autumn-budget-dashboard-2026

  Public

  PolicyEngine/uk-autumn-budget-dashboard-2026’s past year of commit activity
  PolicyEngine dashboard for the UK Autumn Budget 2026: candidate measures modelled before the Budget (not announced policy), household impacts and living standar…

  Python

  •00 forks in PolicyEngine/uk-autumn-budget-dashboard-2026•00 stars in PolicyEngine/uk-autumn-budget-dashboard-2026•2121 issues in PolicyEngine/uk-autumn-budget-dashboard-2026•4747 pull requests in PolicyEngine/uk-autumn-budget-dashboard-2026•Updated Oct 26, 2026Oct 26, 2026

• microcosm-dynamics

  Public
  Design and validation program for populace's Dynamics layer — an open, scored longitudinal extension of PolicyEngine's microdata stack. First validation domain:…

  Python

  •

  MIT License

  •22 forks in PolicyEngine/microcosm-dynamics•11 star in PolicyEngine/microcosm-dynamics•2222 issues in PolicyEngine/microcosm-dynamics•2020 pull requests in PolicyEngine/microcosm-dynamics•Updated Oct 26, 2026Oct 26, 2026

• microcosm

  Public

  PolicyEngine/microcosm’s past year of commit activity
  The micro stack: weighted entity bundles, synthesis, calibration, and rules-engine adapters for survey microdata

  Python

  •

  MIT License

  •66 forks in PolicyEngine/microcosm•00 stars in PolicyEngine/microcosm•309309 issues in PolicyEngine/microcosm•133133 pull requests in PolicyEngine/microcosm•Updated Oct 25, 2026Oct 25, 2026

• policyengine-scorecard

  Public
  Scorecard comparing PolicyEngine/Populace estimates against external analyses — instance 1: Urban Institute's State of the Safety Net

  Python

  •00 forks in PolicyEngine/policyengine-scorecard•00 stars in PolicyEngine/policyengine-scorecard•4141 issues in PolicyEngine/policyengine-scorecard•1212 pull requests in PolicyEngine/policyengine-scorecard•Updated Oct 25, 2026Oct 25, 2026

• policyengine-app-v2

  Public

  PolicyEngine/policyengine-app-v2’s past year of commit activity
  The second iteration of PolicyEngine's free web app for computing the impact of public policy. Currently under development.

  HTML

  •33 forks in PolicyEngine/policyengine-app-v2•11 star in PolicyEngine/policyengine-app-v2•101101 issues in PolicyEngine/policyengine-app-v2•4848 pull requests in PolicyEngine/policyengine-app-v2•Updated Oct 25, 2026Oct 25, 2026

• newsletters

  Public

  PolicyEngine/newsletters’s past year of commit activity
  Newsletters

  HTML

  •

  GNU Affero General Public License v3.0

  •11 fork in PolicyEngine/newsletters•00 stars in PolicyEngine/newsletters•00 issues in PolicyEngine/newsletters•1515 pull requests in PolicyEngine/newsletters•Updated Oct 25, 2026Oct 25, 2026

• policyengine-taxsim

  Public
  TAXSIM emulator using the PolicyEngine US federal and state tax calculator

  Python

  •

  MIT License

  •1010 forks in PolicyEngine/policyengine-taxsim•1818 stars in PolicyEngine/policyengine-taxsim•106106 issues in PolicyEngine/policyengine-taxsim•2323 pull requests in PolicyEngine/policyengine-taxsim•Updated Oct 25, 2026Oct 25, 2026

• chronicle

  Public
  Canonical documentation of microdata sources and their mappings to statute-defined concepts

  Python

  •

  MIT License

  •33 forks in PolicyEngine/chronicle•00 stars in PolicyEngine/chronicle•4242 issues in PolicyEngine/chronicle•2525 pull requests in PolicyEngine/chronicle•Updated Oct 25, 2026Oct 25, 2026

• policyengine-sim-api

  Public
  Python

  •

  GNU Affero General Public License v3.0

  •11 fork in PolicyEngine/policyengine-sim-api•11 star in PolicyEngine/policyengine-sim-api•6666 issues in PolicyEngine/policyengine-sim-api•2020 pull requests in PolicyEngine/policyengine-sim-api•Updated Oct 25, 2026Oct 25, 2026

• policyengine-api

  Public
  PolicyEngine's REST API for computing policy impacts.

  Python

  •

  GNU Affero General Public License v3.0

  •3333 forks in PolicyEngine/policyengine-api•1818 stars in PolicyEngine/policyengine-api•9999 issues in PolicyEngine/policyengine-api•2828 pull requests in PolicyEngine/policyengine-api•Updated Oct 25, 2026Oct 25, 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

  •1010 forks in PolicyEngine/policyengine.py•88 stars in PolicyEngine/policyengine.py•5858 issues in PolicyEngine/policyengine.py•2828 pull requests in PolicyEngine/policyengine.py•Updated Oct 25, 2026Oct 25, 2026

• policybench

  Public
  LLM benchmark for public policy

  Python

  •

  The Unlicense

  •33 forks in PolicyEngine/policybench•22 stars in PolicyEngine/policybench•1515 issues in PolicyEngine/policybench•2424 pull requests in PolicyEngine/policybench•Updated Oct 25, 2026Oct 25, 2026

• policyengine-slides

  Public
  Monorepo for PolicyEngine presentation slide decks

  TypeScript

  •

  MIT License

  •22 forks in PolicyEngine/policyengine-slides•00 stars in PolicyEngine/policyengine-slides•00 issues in PolicyEngine/policyengine-slides•22 pull requests in PolicyEngine/policyengine-slides•Updated Oct 25, 2026Oct 25, 2026

• california-wealth-tax

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

  HTML

  •

  MIT License

  •00 forks in PolicyEngine/california-wealth-tax•00 stars in PolicyEngine/california-wealth-tax•00 issues in PolicyEngine/california-wealth-tax•11 pull request in PolicyEngine/california-wealth-tax•Updated Oct 25, 2026Oct 25, 2026

• uk-childcare-100k-threshold

  Public
  PolicyEngine UK analysis: removing the £100,000 income limit on 30 funded childcare hours and Tax-Free Childcare (Conservative proposal, Oct 2026)

  Python

  •00 forks in PolicyEngine/uk-childcare-100k-threshold•00 stars in PolicyEngine/uk-childcare-100k-threshold•33 issues in PolicyEngine/uk-childcare-100k-threshold•22 pull requests in PolicyEngine/uk-childcare-100k-threshold•Updated Oct 25, 2026Oct 25, 2026

• policyengine-uk-data

  Public
  Repository creating UK microdata.

  Python

  •33 forks in PolicyEngine/policyengine-uk-data•11 star in PolicyEngine/policyengine-uk-data•7272 issues in PolicyEngine/policyengine-uk-data•3636 pull requests in PolicyEngine/policyengine-uk-data•Updated Oct 25, 2026Oct 25, 2026

• microdf

  Public
  Analysis tools for working with survey microdata as DataFrames.

  analysispandasmicrodata+ 4

  analysispandasmicrodatadataframestax-calculatorpsl-catalogedsurvey-microdata

  Python

  •

  MIT License

  •1010 forks in PolicyEngine/microdf•1616 stars in PolicyEngine/microdf•1111 issues in PolicyEngine/microdf•44 pull requests in PolicyEngine/microdf•Updated Oct 25, 2026Oct 25, 2026

• policyengine-ui-kit

  Public
  PolicyEngine UI kit — design tokens, Tailwind CSS v4 theme, and React components for dashboards and calculators

  TypeScript

  •11 fork in PolicyEngine/policyengine-ui-kit•00 stars in PolicyEngine/policyengine-ui-kit•11 issue in PolicyEngine/policyengine-ui-kit•22 pull requests in PolicyEngine/policyengine-ui-kit•Updated Oct 25, 2026Oct 25, 2026

• policyengine-ads-dashboard

  Public
  Public transparency dashboard for PolicyEngine advertising performance

  JavaScript

  •00 forks in PolicyEngine/policyengine-ads-dashboard•00 stars in PolicyEngine/policyengine-ads-dashboard•00 issues in PolicyEngine/policyengine-ads-dashboard•11 pull request in PolicyEngine/policyengine-ads-dashboard•Updated Oct 25, 2026Oct 25, 2026

• snap-qc-sim

  Public
  Monte Carlo simulation of SNAP payment error rates, quality control sampling, and state cost-share exposure under policy and audit choices

  Python

  •

  Apache License 2.0

  •00 forks in PolicyEngine/snap-qc-sim•00 stars in PolicyEngine/snap-qc-sim•1717 issues in PolicyEngine/snap-qc-sim•33 pull requests in PolicyEngine/snap-qc-sim•Updated Oct 24, 2026Oct 24, 2026

• free-childcare-reform

  Public
  Costing a two-part UK childcare reform — 15 free hours for all from 9 months plus a 75% subsidy replacing Tax-Free Childcare. Dashboard: https://free-childcare-…

  Python

  •

  GNU Affero General Public License v3.0

  •00 forks in PolicyEngine/free-childcare-reform•22 stars in PolicyEngine/free-childcare-reform•00 issues in PolicyEngine/free-childcare-reform•11 pull request in PolicyEngine/free-childcare-reform•Updated Oct 24, 2026Oct 24, 2026

• uk-cgt-reform

  Public
  PolicyEngine analysis of reforms to UK capital gains tax rates: equalisation with income tax rates, plus a live explorer for any rate schedule

  JavaScript

  •00 forks in PolicyEngine/uk-cgt-reform•00 stars in PolicyEngine/uk-cgt-reform•44 issues in PolicyEngine/uk-cgt-reform•33 pull requests in PolicyEngine/uk-cgt-reform•Updated Oct 24, 2026Oct 24, 2026

• uk-energy-autumn-budget

  Public
  UK household energy bills at forecast prices and Autumn Budget 2026 support options, scored with PolicyEngine on Microcosm UK

  Python

  •

  GNU Affero General Public License v3.0

  •00 forks in PolicyEngine/uk-energy-autumn-budget•00 stars in PolicyEngine/uk-energy-autumn-budget•11 issue in PolicyEngine/uk-energy-autumn-budget•33 pull requests in PolicyEngine/uk-energy-autumn-budget•Updated Oct 24, 2026Oct 24, 2026

• uk-living-standards-outlook

  Public
  UK living standards outlook (demo): PolicyEngine baseline incomes, inequality and poverty for the Autumn Budget 2026. Live: https://uk-living-standards-outlook.…

  JavaScript

  •00 forks in PolicyEngine/uk-living-standards-outlook•00 stars in PolicyEngine/uk-living-standards-outlook•11 issue in PolicyEngine/uk-living-standards-outlook•33 pull requests in PolicyEngine/uk-living-standards-outlook•Updated Oct 24, 2026Oct 24, 2026

• givecalc

  Public
  Giving pledge calculator

  TypeScript

  •22 forks in PolicyEngine/givecalc•00 stars in PolicyEngine/givecalc•44 issues in PolicyEngine/givecalc•11 pull request in PolicyEngine/givecalc•Updated Oct 24, 2026Oct 24, 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

  •3030 forks in PolicyEngine/policyengine-core•2222 stars in PolicyEngine/policyengine-core•108108 issues in PolicyEngine/policyengine-core•1717 pull requests in PolicyEngine/policyengine-core•Updated Oct 24, 2026Oct 24, 2026

• bus-fare-cap

  Public
  Microsimulation of two bus fare policies for young people — free buses for under-25s and a £1 fare cap — on the PolicyEngine UK Enhanced FRS. Live dashboard ↓

  HTML

  •

  GNU Affero General Public License v3.0

  •00 forks in PolicyEngine/bus-fare-cap•00 stars in PolicyEngine/bus-fare-cap•00 issues in PolicyEngine/bus-fare-cap•11 pull request in PolicyEngine/bus-fare-cap•Updated Oct 24, 2026Oct 24, 2026