PolicyEngine/policyengine-taxsim

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TAXSIM emulator using the PolicyEngine US federal and state tax calculator

Stars: 17
Forks: 10
Open beginner issues: 0
Indexed issues: 49
Avg merge: 15h 55m
Merged PRs (30d): 1

Dominant language: Python
License: MIT
Last GitHub push: Aug 24, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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49 open issues indexed

What is the phaseout rate for the 2021 CT child tax rebate Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

PolicyEngine/policyengine-taxsim#1191 · 1 comment · Opened Sep 17, 2026
MD joint 2021 26Kpwages 9Kswages 1Kchildcare 3dpex Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

PolicyEngine/policyengine-taxsim#1190 · 1 comment · Opened Sep 17, 2026
MT 2021 joint 84Kpwages 22Kswages 1Kchildcare 3depx Open

Difficulty 3/5 1-2 days Newbie friendliness 64/100

PolicyEngine/policyengine-taxsim#1189 · 1 comment · Opened Sep 17, 2026
DE 2021 joint 2depx 59Kpwages 55Kswages 18Kchildcare Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

PolicyEngine/policyengine-taxsim#1188 · 1 comment · Opened Sep 17, 2026
NY HoH 2021 24Kpwages 1depx Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

PolicyEngine/policyengine-taxsim#1185 · 3 comments · Opened Sep 14, 2026
AL HoH 2021 104Kpwages Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

PolicyEngine/policyengine-taxsim#1184 · 1 comment · Opened Sep 13, 2026
MT 2021 single 63page 20Kpwages 1Kproptax Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PolicyEngine/policyengine-taxsim#1180 · 1 comment · Opened Sep 11, 2026
AR 2021 single 112Kpwages 31Kpui Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

PolicyEngine/policyengine-taxsim#1179 · 1 comment · Opened Sep 11, 2026
OR 2024 HoH 2depx 81Kpwages 3Kproptax Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

PolicyEngine/policyengine-taxsim#1174 · 4 comments · Opened Sep 7, 2026
IL 2021 joint elderly 119Kswages 57Kintrec 19Kgssi 3Kproptax Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

PolicyEngine/policyengine-taxsim#1172 · 1 comment · Opened Sep 7, 2026
OH joint 100Kpwages 19Kintrec 19Kpensions Open

Difficulty 3/5 1-2 days Newbie friendliness 65/100

PolicyEngine/policyengine-taxsim#1168 · 2 comments · Opened Sep 4, 2026
PA elderly joint 2023 37Kintrec 201Kpensions 52Kgssi Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

PolicyEngine/policyengine-taxsim#1165 · 1 comment · Opened Sep 2, 2026
CA 2023 joint 1depx 8Kswages Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

PolicyEngine/policyengine-taxsim#1161 · 1 comment · Opened Aug 29, 2026
MI joint 1depx 68page 67sage 84Kpensions 48Kgssi Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

PolicyEngine/policyengine-taxsim#1159 · 2 comments · Opened Aug 26, 2026
AR sep-combined 2023 209Kswages 33Kpensions 55page 52sage 1depx Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PolicyEngine/policyengine-taxsim#1157 · 2 comments · Opened Aug 25, 2026
VA 2023 joint 209Kswages 33Kpensions 1depx Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

PolicyEngine/policyengine-taxsim#1156 · Opened Aug 25, 2026
WA joint 2023 1depx 20Kpwages 29Kswages 1depx Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

PolicyEngine/policyengine-taxsim#1155 · 1 comment · Opened Aug 25, 2026
MT 2023 joint 110Kpwages 3Kswages 1dpex Open

PolicyEngine/policyengine-taxsim#1152 · 2 comments · 1 assignee · Opened Aug 24, 2026
KY 2022 joint elderly 31Kswages 1depx Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PolicyEngine/policyengine-taxsim#1149 · 1 comment · Opened Aug 23, 2026
AR joint 2022 88Kpwages 162Kswages 1depx Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

PolicyEngine/policyengine-taxsim#1143 · 1 comment · Opened Aug 19, 2026
CT joint 2022 62Kswages 4Kproptax 1depx Open

Difficulty 4/5 3-5 days Newbie friendliness 50/100

PolicyEngine/policyengine-taxsim#1142 · 2 comments · Opened Aug 19, 2026
AR 2022 HoH 26Kpwages 2depx Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

PolicyEngine/policyengine-taxsim#1137 · 1 comment · Opened Aug 15, 2026
MD 2022 single 621Kpwages 10Kintrec Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

PolicyEngine/policyengine-taxsim#1133 · 1 comment · Opened Aug 13, 2026
MD 17Kpwages 1depx Open

PolicyEngine/policyengine-taxsim#1132 · 1 comment · 1 assignee · Opened Aug 13, 2026
CT 2022 HoH 54Kpwages 1depx Open

PolicyEngine/policyengine-taxsim#1127 · 4 comments · 1 assignee · Opened Aug 10, 2026
ME 2022 HoH 44Kpwages 17Krentpaid 1depx Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

PolicyEngine/policyengine-taxsim#1126 · 3 comments · Opened Aug 9, 2026
MT sngl 2021 17Kpensions 48Kgssi 1Kintrec Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

PolicyEngine/policyengine-taxsim#1120 · 1 comment · Opened Aug 3, 2026
ME single 2021 35page 47Kpwages 83Kpensions Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

PolicyEngine/policyengine-taxsim#1116 · 3 comments · Opened Jul 31, 2026
Important questions for pension exclusions Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

PolicyEngine/policyengine-taxsim#1114 · 1 comment · Opened Jul 25, 2026
DE 2021 married/combined 1depx 75Kpwages 39Kswages 1Kintrec 16Kchildcare Open

PolicyEngine/policyengine-taxsim#1113 · 1 comment · 1 assignee · Opened Jul 24, 2026
MT 2021 married//combined 172Kpwages 25Kswages Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

PolicyEngine/policyengine-taxsim#1112 · 1 comment · Opened Jul 23, 2026
IA 2021 sep/combined 66Kintrec 84Kpensions 39Kgssi Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

PolicyEngine/policyengine-taxsim#1111 · 1 comment · Opened Jul 23, 2026
IA married/combined 2021 58page 57sage 104Kpwages 44pensions 14Kintrec Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

PolicyEngine/policyengine-taxsim#1110 · 1 comment · Opened Jul 23, 2026
IA 2021 HoH 94Kpwages 2Kintrec 2Kchildcare Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

PolicyEngine/policyengine-taxsim#1108 · 1 comment · Opened Jul 22, 2026
AZ 2021 HoH 20Kpwages 5depx Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

PolicyEngine/policyengine-taxsim#1105 · 1 comment · Opened Jul 21, 2026
eCPS PE↔TAXSIM diff drivers (8k sample × TY2021/2023/2025) — prioritized roadmap Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

PolicyEngine/policyengine-taxsim#1059 · 8 comments · Opened Jul 6, 2026
Restore `scorp → s_corp_income` mapping (revert #1051's change back to the pe-us #8613 leaf) Open

Difficulty 2/5 1-3 hours Newbie friendliness 75/100

PolicyEngine/policyengine-taxsim#1055 · Opened Jul 5, 2026
S-corp income: emulator treats scorp as active (no NIIT, no passive-loss limit); TAXSIM treats it as passive (3.8% NIIT) Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

PolicyEngine/policyengine-taxsim#1053 · Opened Jul 5, 2026
scorp Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

PolicyEngine/policyengine-taxsim#1018 · 1 comment · Opened Jun 23, 2026
US joint -294Kpsemp 7Kssemp 159intrec -4403Kscorp Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

PolicyEngine/policyengine-taxsim#1003 · 1 comment · Opened Jun 21, 2026
Does `taxsimtest` lump MN Form M1PR refunds into `siitax`, and has it modeled the 2024 MN Renter's Credit reform? Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

PolicyEngine/policyengine-taxsim#968 · 8 comments · Opened Jun 5, 2026
scorp income Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

PolicyEngine/policyengine-taxsim#943 · 1 comment · Opened May 29, 2026
ND 2025 single 951Kpsemp plus lots more Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

PolicyEngine/policyengine-taxsim#762 · 4 comments · Opened Mar 10, 2026
Add full output functionality in State and others Open

PolicyEngine/policyengine-taxsim#759 · 2 comments · 1 assignee · Opened Mar 9, 2026
R package: use Config/reticulate for Python dependency declaration Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

PolicyEngine/policyengine-taxsim#722 · 1 comment · Opened Feb 26, 2026
Proposal: new repo for general survey microdata calculator Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

PolicyEngine/policyengine-taxsim#698 · 2 comments · Opened Feb 10, 2026
When computing multiple records, display results as they are computed Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

PolicyEngine/policyengine-taxsim#648 · 1 comment · Opened Dec 2, 2025
FICA and QBI income Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

PolicyEngine/policyengine-taxsim#384 · 6 comments · Opened Jul 2, 2025
In the `variable_mappings.yaml` rename `additional_tax_units` to `additional_tax_unit_inputs` and `additional_income_units` to `additional_person_level_inputs` Open

Backlog

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

PolicyEngine/policyengine-taxsim#165 · 1 comment · 1 reaction · Opened Dec 27, 2024

PolicyEngine/policyengine-taxsim

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