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In 2014, the Policy Simulation Library [1] added a model called Tax-Simulator [2], which is a Python reimplementation of TAXSIM [3][4]. It is available as open-

by tmm1 4y ago

In 2014, the Policy Simulation Library [1] added a model called Tax-Simulator [2], which is a Python reimplementation of TAXSIM [3][4]. It is available as open-source [5], and designed to let researchers both change existing policy variables and implement new tax reforms in Python. [1] https://pslmodels.org/ https://pslmodels.org/ [2] https://taxcalc.pslmodels.org/ https://taxcalc.pslmodels.org/ [3] https://taxcalc.pslmodels.org/about/history.html https://taxcalc.pslmodels.org/about/history.html [4] https://github.com/PSLmodels/Tax-Calculator/blob/master/taxcalc/validation/taxsim27/README.md https://github.com/PSLmodels/Tax-Calculator/blob/master/taxc... [5] https://github.com/PSLmodels/Tax-Calculator https://github.com/PSLmodels/Tax-Calculator

runlevel1 4y ago
`policy_current_law.json` is really interesting: https://github.com/PSLmodels/Tax-Calculator/blob/master/taxcalc/policy_current_law.json https://github.com/PSLmodels/Tax-Calculator/blob/master/taxc... Looks like the data in there goes back to 2013/2014. I'd love to see older historical policy data.
fsflyer 4y ago
France has an open source implementation of their tax code [0]. The paper [1] gives an overview of the implementation language, mlang. [0] https://github.com/MLanguage/mlang https://github.com/MLanguage/mlang [1] https://arxiv.org/abs/2011.07966 https://arxiv.org/abs/2011.07966
- MaxGhenis 4y ago
  France has also developed the OpenFisca framework [1] for tax and benefit rules as code, and its OpenFisca France [2] model is widely used (I think significantly more than mlang). We've extended it to the UK [3] and the US [4]. [1] https://openfisca.org https://openfisca.org [2] https://github.com/openfisca/openfisca-france https://github.com/openfisca/openfisca-france [3] https://github.com/policyengine/openfisca-uk https://github.com/policyengine/openfisca-uk [4] https://github.com/policyengine/openfisca-us https://github.com/policyengine/openfisca-us
MaxGhenis 4y ago
My team at PolicyEngine [1] is also now further reimplementing Tax-Calculator in the Python-based OpenFisca framework [2]. OpenFisca US [3] includes all tax logic in Tax-Calculator, plus many means-tested benefit programs like SNAP, and some state tax logic (currently only Massachusetts is complete, though we'll finish the country in the next 12-18 months). You can try it in our PolicyEngine US web app [4]. (OpenFisca US is part of the Policy Simulation Library, and it's developed by a number of former Tax-Calculator developers, myself included.) [1] https://policyengine.org https://policyengine.org [2] https://openfisca.org https://openfisca.org [3] https://github.com/policyengine/openfisca-us https://github.com/policyengine/openfisca-us [4] https://policyengine.org/us https://policyengine.org/us

by tmm1 4y ago

runlevel1 4y ago

`policy_current_law.json` is really interesting: https://github.com/PSLmodels/Tax-Calculator/blob/master/taxcalc/policy_current_law.json https://github.com/PSLmodels/Tax-Calculator/blob/master/taxc... Looks like the data in there goes back to 2013/2014. I'd love to see older historical policy data.

fsflyer 4y ago

France has an open source implementation of their tax code [0]. The paper [1] gives an overview of the implementation language, mlang. [0] https://github.com/MLanguage/mlang https://github.com/MLanguage/mlang [1] https://arxiv.org/abs/2011.07966 https://arxiv.org/abs/2011.07966

MaxGhenis 4y ago
France has also developed the OpenFisca framework [1] for tax and benefit rules as code, and its OpenFisca France [2] model is widely used (I think significantly more than mlang). We've extended it to the UK [3] and the US [4]. [1] https://openfisca.org https://openfisca.org [2] https://github.com/openfisca/openfisca-france https://github.com/openfisca/openfisca-france [3] https://github.com/policyengine/openfisca-uk https://github.com/policyengine/openfisca-uk [4] https://github.com/policyengine/openfisca-us https://github.com/policyengine/openfisca-us

MaxGhenis 4y ago

My team at PolicyEngine [1] is also now further reimplementing Tax-Calculator in the Python-based OpenFisca framework [2]. OpenFisca US [3] includes all tax logic in Tax-Calculator, plus many means-tested benefit programs like SNAP, and some state tax logic (currently only Massachusetts is complete, though we'll finish the country in the next 12-18 months). You can try it in our PolicyEngine US web app [4]. (OpenFisca US is part of the Policy Simulation Library, and it's developed by a number of former Tax-Calculator developers, myself included.) [1] https://policyengine.org https://policyengine.org [2] https://openfisca.org https://openfisca.org [3] https://github.com/policyengine/openfisca-us https://github.com/policyengine/openfisca-us [4] https://policyengine.org/us https://policyengine.org/us