usincometaxes vs mlang

usincometaxes

Calculate Federal and State US Income Taxes (by shanejorr)

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Source Code

shaneorr.io

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mlang

Compiler for the M language, used to compute the income tax of French taxpayers (by MLanguage)

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Source Code

mlanguage.github.io

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usincometaxes		mlang
	Project
1	Mentions	7
11	Stars	175
-	Growth	0.0%
5.9	Activity	9.1
3 months ago	Latest Commit	6 days ago
JavaScript	Language	OCaml
GNU General Public License v3.0 or later	License	GNU General Public License v3.0 only

The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

usincometaxes

Posts with mentions or reviews of usincometaxes. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-06-29.

Show HN: Calculator for US Individual Income tax, from 1970-present
13 projects | news.ycombinator.com | 29 Jun 2022

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

mlang

Posts with mentions or reviews of mlang. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-06-29.

IRS builds task force to explore running its own free e-file system
1 project | news.ycombinator.com | 12 Feb 2023

french tax code has a semi-official DSL syntax
https://github.com/MLanguage/mlang
Show HN: Calculator for US Individual Income tax, from 1970-present
13 projects | news.ycombinator.com | 29 Jun 2022

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
Open Source Tax Software
6 projects | news.ycombinator.com | 4 Oct 2021

The french initiative started in 2013 is still alive (last commit a few days ago), and passes the gov test suite (they keep in touch with our version of the IRS): https://github.com/openfisca/openfisca-france
The way we got this is interestingly twisted.
French citizens requested the software used by the administration, and they managed to get it!
But, it's was written in Mlang is a proprietary language created by the french administration in the 90: https://github.com/MLanguage/mlang.
Someone then decided to create an OCaml compiler that takes mlang and emits python: https://arxiv.org/abs/2011.07966
As a result, we got we got open fisca. I know believe there are other techs in the mix...
A slide of the story: https://www.slideshare.net/Etalab/opening-up-the-french-tax-...
Catala: A Programming Language for the Law
5 projects | /r/programming | 4 May 2021
Code isn’t law—law is law
1 project | /r/bitcoincashSV | 24 Mar 2021

They have open sourced the algorithm they use to compute taxes here: https://gitlab.adullact.net/dgfip/ir-calcul which used a purpose made programming language https://github.com/MLanguage/mlang
Software engineers make the best CEOs, at least when measured by market cap
5 projects | /r/programming | 17 Mar 2021

It's important to note that this isn't universal across the entire legal system. Some subsets like France's tax system are defined in code, and there's some efforts to create more general systems as computational law advances as a field.
Templating for Lawyers
1 project | news.ycombinator.com | 13 Mar 2021

--> https://github.com/MLanguage/mlang
*"Compiler for the M language, used to compute the income tax of French taxpayers"*

What are some alternatives?

When comparing usincometaxes and mlang you can also consider the following projects:

openfisca-france - French tax and benefit system for OpenFisca

catala - Programming language for literate programming law specification

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

Textual - Textual is an IRC client for OS X

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

UsTaxes - Tax filing web application

taxsim.js - JS/WebAssembly version of NBER TAXSIM

Keka - The macOS & iOS file archiver

openfisca-us