PolicyEngine/policyengine-us

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

Stars: 163
Forks: 213
Open beginner issues: 17
Indexed issues: 747
Avg merge: 3d 3h
Merged PRs (30d): 96

Dominant language: Python
License: AGPL-3.0
Last GitHub push: Sep 17, 2026
Latest indexed: Sep 16, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue

Open All

741 open issues indexed

Complete `is_aca_eshi_eligible` by modeling disqualifying ESI offers Open

aca-subsidy

PolicyEngine/policyengine-us#5963 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Senior and Disabled medicaid needs more details Open

PolicyEngine/policyengine-us#6010 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Arkansas individual income tax parameters Open

states/ar

PolicyEngine/policyengine-us#6128 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Review and revise federal CCDF parameter and variable values Open

PolicyEngine/policyengine-us#6248 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Consider migrating from mask approach to np.divide for division by zero handling Open

PolicyEngine/policyengine-us#6356 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Refactor medicaid_group to use state-level override pattern for state-funded Medicaid programs Open

PolicyEngine/policyengine-us#7026 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Proposal: revamping HR1 rules for Medicaid Community Engagement Open

PolicyEngine/policyengine-us#7751 · 9 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
SNAP always_standard utility allowance parameter may model wrong concept Open

PolicyEngine/policyengine-us#7853 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
CA SSP: payment standard double-counts for facility residents and stores combined totals requiring annual updates Open

PolicyEngine/policyengine-us#7892 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Tighten remaining tail in Census SPM childcare cap replication Open

PolicyEngine/policyengine-us#7961 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Model Medicare Part B premiums in baseline SPM MOOP Open

PolicyEngine/policyengine-us#7967 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Retire temporary `has_itin` aliases after `has_tin` migration Open

PolicyEngine/policyengine-us#7970 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Security: verify the downloaded Taxsim executable before execution Open

PolicyEngine/policyengine-us#7982 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Audit and fix TANF resource tests against populated microdata assets Open

PolicyEngine/policyengine-us#7987 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Fix TANF application-month income and assistance-unit modeling in CPS baseline Open

PolicyEngine/policyengine-us#7988 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Formalize spouse-level income ownership for joint filers in state tax logic Open

PolicyEngine/policyengine-us#7993 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Add federal vs. state cost attribution for benefit programs (Medicaid FMAP, SNAP OBBBA, CHIP eFMAP, etc.) Open

PolicyEngine/policyengine-us#8075 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Refine IL CHIP premium encoding for Level 1 child-count schedule Open

medicaid

PolicyEngine/policyengine-us#8087 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
MOOP should use computed premiums instead of fully imputed, so reforms propagate to SPM Open

PolicyEngine/policyengine-us#8089 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Rules-based Marketplace net premium and Medicare Part B for reform-responsive MOOP Open

PolicyEngine/policyengine-us#8095 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Replace Line 49 proxy with direct M-CHIP sheet premium collections for CT, DE, MA, MI, NY Open

PolicyEngine/policyengine-us#8099 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Add Connecticut Unemployment Insurance Open

PolicyEngine/policyengine-us#8166 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Calibrate Marketplace take-up and selected-plan premium ratios Open

aca-subsidy

PolicyEngine/policyengine-us#8168 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Add New York STAR property tax relief (focus on Enhanced STAR) Open

PolicyEngine/policyengine-us#8183 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Add Arkansas age 65 or disabled homeowner property tax relief Open

PolicyEngine/policyengine-us#8193 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Add Louisiana Special Assessment Level freeze for seniors Open

PolicyEngine/policyengine-us#8197 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Add South Dakota senior property tax relief programs Open

PolicyEngine/policyengine-us#8202 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
RuntimeWarning: invalid value encountered in divide — QBI / labor-supply variables (84 occurrences in policyengine.py test suite) Open

PolicyEngine/policyengine-us#8216 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Implement Montana State Supplementary Payment (SSP) Open

PolicyEngine/policyengine-us#8232 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Medicaid CE: model state-optional hardship exceptions Open

PolicyEngine/policyengine-us#8270 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Harmonize state_standard_deduction and state_itemized_deductions coverage Open

PolicyEngine/policyengine-us#8275 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Add COFA immigration status for OBBBA SNAP, Medicaid, and ACA eligibility Open

aca-subsidy enhancement medicaid snap

PolicyEngine/policyengine-us#8296 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Track income-flow integration for state UI programs Open

PolicyEngine/policyengine-us#8301 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
PyPI storage limit blocks policyengine-us releases Open

PolicyEngine/policyengine-us#8316 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Model North Dakota Homestead Property Tax Credit Open

PolicyEngine/policyengine-us#8325 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Implement Census-style housing subsidy capping Open

PolicyEngine/policyengine-us#8328 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Wisconsin SSP 2017, 2018, 2019 Open

PolicyEngine/policyengine-us#8345 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Vermont SSP 2017, 2018, 2019 Open

PolicyEngine/policyengine-us#8346 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Washington SSP 2017, 2018, 2019 Open

PolicyEngine/policyengine-us#8347 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Implement Medicaid medically needy/spenddown pathway for aged, blind, and disabled people Open

medicaid

PolicyEngine/policyengine-us#8361 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Audit SSI-recipient Medicaid state handling: 1634, SSI-criteria, and 209(b) states Open

medicaid ssi

PolicyEngine/policyengine-us#8362 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Model Medicaid Buy-In eligibility for working disabled people beyond Illinois Open

medicaid

PolicyEngine/policyengine-us#8363 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Model D.C. TANF 60-month phase-down and hardship extensions Open

PolicyEngine/policyengine-us#8367 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Investigate USDA/SNAP disabled status modeling and data support Open

PolicyEngine/policyengine-us#8430 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Audit broad is_disabled usage across program-specific disability rules Open

PolicyEngine/policyengine-us#8431 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Update Michigan SSI-related Medicaid asset limits and ABD pathways Open

PolicyEngine/policyengine-us#8453 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Reconcile reported Medicaid coverage when modeled eligibility is false Open

PolicyEngine/policyengine-us#8495 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Separate Medicaid legal eligibility categories from cost/risk groups Open

PolicyEngine/policyengine-us#8497 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Define Microplex mp-300k default switch and rollback behavior Open

PolicyEngine/policyengine-us#8506 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Model Rhode Island Ticket to Work and Sherlock as separate Medicaid buy-in pathways Open

enhancement medicaid

PolicyEngine/policyengine-us#8512 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026

PolicyEngine/policyengine-us

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