→ Exploring how Belgian compensations are computed.
The goal of Refli is to make Belgian employee compensation rules approachable for everyone, by providing documentation, data, and computation tools. Those should be relevant for everyone, including professionals and developers.
This project is currently in an early stage.
The withholding tax (or "précompte professionnel" in French) is described in the Belgian official journal. The relevant parts are listed on the FPS Finance website (although only in Dutch and French).
In particular there are three links. The data of the second one, Barèmes 1er
janvier 2021, are available in source code form in
Refli.Data.Scales.
A simple set of rules written in Publicodes to compute a net revenue given a
gross income is provided in
publicodes/compensation.yaml.
Provided the publicodes NPM package is installed, displaying the result with
intermediate values can be done with the helper script run-publicodes.sh.
Some code in compensation.yaml is generated with the
withholding-tax/scales.hs script. E.g.:
$ nix-shell --run 'runghc -isrc/ -XNoImplicitPrelude withholding-tax/scales.hs worker-scale-1'
- Acerta: Calculateur brut/net
- Acerta: Calcul brut-net en Belgique
- Attentia: Calculez votre salaire (powered by Jobat)
- Billy: Billy.tech (for freelancers, and not really a simulation)
- Bright Plus: Calculez votre salaire net
- CSC: Calculez votre salaire en net
- FGTB: Calculateur de salaire brut - net
- Group S: Salary Sim
- HelloSafe: Calcul salaire brut en net (can be embedded)
- Jobat: Calculez votre salaire
- Kluwer: Brut-Net
- Liantis: Calculateur brut/net
- Partena Professional: Simulateur de salaire brut-net
- References (Le Soir): Calculateur brut/net (powered by SD Worx)
- Refli (this project): Calcul de salaire
- SD Worx: Simulation salariale
- Securex: Brut Net
- SSN (Fednot): Calculateur brut-net (specific to notaries)
- Talent: Calcul du salaire brut / net
Some data collected manually using those simulations are in
tests/examples.hs.
- Acerta: Simulateur cotisations sociales
- Avixi (Via E-Loket): Simulation calcul de cotisations
- Securex: Calcul cotisations sociales
- UCM: Calcul de cotisations
- Xerius: Simulation de cotisations sociales
- CNH (Via E-Loket): Simulation calcul de cotisations
- Group S (Via E-Loket): Outil de simulation
- Liantis: Calcul des cotisations sociales
- Partena Professional: Cotisimul
The e-loket (or e-guichet, e-counter) seems to be Ventouris, an application written by Cegeka for multiple SIFs.
The refli.be website is running some closed source code, but most of its
content is a set of static files defined in this repository. To create a root
directory and serve it locally, use the scripts/serve.sh script:
$ scripts/serve.sh
/nix/store/bh131nxx7rpgmlsb72l8anlx53kxdc92-all-with-static
You can now visit http://127.0.0.1:9000/.
^C
Under NixOS, adding an Nginx virtual host looks like this (where refli-be is
this directory, and static is provided by
hypered/design):
virtualHosts."refli.be" = {
forceSSL = true;
enableACME = true;
locations = {
"/".alias = (import refli-be {}).site + "/";
"/static/".alias = static + "/";
};
};
Note: Some pages use HTML comments triggering the SSI (server-side include) feature of Nginx. It means they pull some additional content served, normally, by the closed source backend.
Refli.be is hosted on a droplet at Digital Ocean.
The favicon is a manually written SVG file, converted to PNG, then to ICO:
$ nix-shell -p inkscape --run \
'inkscape -w 512 -h 512 letter-R-favicon.svg --export-filename letter-R-favicon.png'
$ nix-shell -p imagemagick --run \
'convert letter-R-favicon.png -define icon:auto-resize=256,64,48,32,16 favicon.ico'
To add a white background:
$ inkscape -w 512 -h 512 -b FFFFFF letter-R-favicon.svg --export-filename letter-R-favicon.png
Note: I had to remove the font-face definition from the SVG file, or I add an error.
For files with the .pikchr extension, use something like
$ pikchr --svg-only pages/fr/blog/introducing-layers.pikchr > introducing-layers.svg