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

Add unit test for `capital_gains_tax` Open

PolicyEngine/policyengine-us#5377 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Model take-up of itemized medical deduction Open

PolicyEngine/policyengine-us#5378 · 0 comments · 0 reactions · 2 assignees · Indexed Sep 16, 2026
South Carolina sales tax cut for people age 85 and older Open

states/sc

PolicyEngine/policyengine-us#5387 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Rename `mn_income_tax_before_credits` to `mn_income_tax_before_non_refundable_credits` Open

PolicyEngine/policyengine-us#5390 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Add unit tests for classes in `labor_supply_response.py` Open

PolicyEngine/policyengine-us#5391 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Flag SNAP asset limits as not applying in microsim Open

snap

PolicyEngine/policyengine-us#5397 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Remove flag about TANF non-cash not applying in microsim Open

snap

PolicyEngine/policyengine-us#5398 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
DC Produce Plus Open

states/dc

PolicyEngine/policyengine-us#5405 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Calculate deciles in labor supply elasticities dynamically Open

code-health

PolicyEngine/policyengine-us#5408 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 16, 2026
Add SSA uprating to Colorado OAP and AND-CS programs Open

states/co

PolicyEngine/policyengine-us#5414 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Add a new variable for adjusted gross income for charitable deductions to align with IRC definition (§ 170(b)(1)(H)) Open

tax

PolicyEngine/policyengine-us#5415 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Clarify description of ny_itemized_deductions_reduction Open

PolicyEngine/policyengine-us#5426 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Prevent NY filers from claiming both college tuition credit and deduction Open

states/ny

PolicyEngine/policyengine-us#5432 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Tax unit count blind head or spouse Open

PolicyEngine/policyengine-us#5439 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Include federal tax concepts in state tax variables for states that adopt federal ones Open

PolicyEngine/policyengine-us#5440 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Zero out credits in years they don't exist Open

PolicyEngine/policyengine-us#5441 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
SNAP weekly-to-monthly multiplier Open

snap

PolicyEngine/policyengine-us#5445 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Use state-specific SLCSP age curves Open

PolicyEngine/policyengine-us#5471 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Update CA SLCSP for 2025 Open

PolicyEngine/policyengine-us#5472 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Use `greater_age_head_spouse` in DC property tax credit formula Open

states/dc

PolicyEngine/policyengine-us#5473 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Applying behavioral responses to empty reform causes nonzero change Open

bug

PolicyEngine/policyengine-us#5504 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Add a condition to use reported sales income tax amount Open

PolicyEngine/policyengine-us#5506 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Adopt consistent approach to looking up TANF values based on household size Open

code-health

PolicyEngine/policyengine-us#5524 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Iowa Health Insurance deduction Open

states/ia

PolicyEngine/policyengine-us#5529 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Iowa capital gains deduction Open

states/ia

PolicyEngine/policyengine-us#5530 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Reform: SSI unearned income % exclusion Open

reforms ssi

PolicyEngine/policyengine-us#5534 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Upgrade to python 3.13.0 Open

PolicyEngine/policyengine-us#5535 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Model local sales tax tables Open

PolicyEngine/policyengine-us#5538 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Unify parameter for Colorado ABLE and CollegeInvest subtractions Open

states/co

PolicyEngine/policyengine-us#5586 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Rename taxsim validation test files to indicate they're not unit tests Open

code-health

PolicyEngine/policyengine-us#5587 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
State Sales Tax 2021, 2022, 2024 Open

PolicyEngine/policyengine-us#5589 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Uprate non-food/energy expenses by CPI without food and energy Open

uprating

PolicyEngine/policyengine-us#5610 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Separate `medical_out_of_pocket_expenses` variable into IRS- and USDA-specific ones Open

PolicyEngine/policyengine-us#5611 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Model FISC phase-out as stepped rather than smooth Open

reforms

PolicyEngine/policyengine-us#5621 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Add linecheck as dev dep Open

PolicyEngine/policyengine-us#5628 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Toggles for full take-up Open

PolicyEngine/policyengine-us#5640 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Update North Carolina SCCA age parameters to use proper unit type after core fix Open

PolicyEngine/policyengine-us#5642 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Replace brackets with bullets for test outputs with multiple entities Open

code-health

PolicyEngine/policyengine-us#5647 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Consolidate the `aca_ptc` and `premium_tax_credit` variables Open

PolicyEngine/policyengine-us#5650 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Impute pregnancy for FISC Act pregnancy credit Open

reforms

PolicyEngine/policyengine-us#5659 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Massachusetts Full‐Cost State Supplement for Aged+Blind with Large Income Open

states/ma

PolicyEngine/policyengine-us#5676 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Massachusetts Bay Transportation Authority Income-Eligible Reduced Fare Program payout amount Open

states/ma

PolicyEngine/policyengine-us#5680 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Massachusetts Bay Transportation Authority Middle and High School Student CharlieCards Open

states/ma

PolicyEngine/policyengine-us#5681 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Puerto Rico implementation of Child Tax Credit Open

territories/pr

PolicyEngine/policyengine-us#5706 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Maryland Pension Income Deduction is Inconsistent Open

PolicyEngine/policyengine-us#5745 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Massachusetts TAFDC Roomer and Boarder Income Open

states/ma

PolicyEngine/policyengine-us#5753 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Massachusetts TAFDC Grandparent Income for Teen Parent Open

states/ma

PolicyEngine/policyengine-us#5755 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Fails in Colab notebook Open

PolicyEngine/policyengine-us#5786 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
California Has 3 Counties with Different CHIP FPL Cutoffs Open

medicaid states/ca

PolicyEngine/policyengine-us#5799 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
California's income limit for senior's on Medicaid is above the federal limit Open

medicaid

PolicyEngine/policyengine-us#5906 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026

PolicyEngine/policyengine-us

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