Show HN: Calculator for US Individual Income tax, from 1970-present

• policyengine-us

  4 92 10.0 Python

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

  

Agreed. We're building an open source version of taxsim at https://github.com/policyengine/openfisca-us.

• UsTaxes

  51 1,379 8.7 TypeScript

  Tax filing web application

  

Sort of tangentially, I'm working with other contributors on https://ustaxes.org, an open source tax filing webapp https://github.com/ustaxes/UsTaxes.

Currently, many Federal tax forms are supported, as well as tax filing for the state of Illinois. Filing for Oregon and California is under development!

• InfluxDB

  www.influxdata.com sponsored

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• taxsim.js

  1 21 1.8 HTML

  JS/WebAssembly version of NBER TAXSIM

[4] https://github.com/tmm1/taxsim.js

• taxsim.app

  4 47 0.0 JavaScript

  US Income Tax simulator, built on NBER TAXSIM and taxsim.js

[6] https://github.com/tmm1/taxsim.app

• usincometaxes

  1 11 5.9 JavaScript

  Calculate Federal and State US Income Taxes

[7] https://github.com/shanejorr/usincometaxes/pull/11

• Tax-Calculator

  3 250 9.1 Python

  USA Federal Individual Income and Payroll Tax Microsimulation Model

  

`policy_current_law.json` is really interesting:

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.

• mlang

  7 175 9.1 OCaml

  Compiler for the M language, used to compute the income tax of French taxpayers

  

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

• WorkOS

  workos.com sponsored

  The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  

• openfisca-france

  3 245 9.8 Python

  French tax and benefit system for OpenFisca

  

• policyengine-uk

  2 21 8.9 Python

  The UK's only open-source static tax-benefit microsimulation model.

  

• openfisca-us

  1 - -

FWIW, we'll have Maryland income taxes, including local income taxes, by the end of July: https://github.com/policyengine.org/openfisca-us

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