I would like to make (my first) plugin for german tax calculation in cakephp 3.
There is a logic scheme available for each year (http://www.bundesfinanzministerium.de/Content/DE/Downloads/Steuern/Steuerarten/Lohnsteuer/Programmablaufplan/2016-11-11-PAP-2017.pdf?__blob=publicationFile&v=3).
Until now I've put this logic in a single component which Ive updated every single year and copied manually to several projects. Works like a charme
But I think a "closed" plugin is a better place for this for easier distribution and community-availablity
I am struggling where to but calculation logic Is a component (in a plugin) the right place for this? No database access is required. And whats the best practice for managing different years?