TaxJs is a typescript and javascript library to calculate german tax.
The code is generated from pseudo code from https://www.bmf-steuerrechner.de/
Test page: https://taxcalcs.github.io/taxjs-test/
let tax = new Lohnsteuer2021Big();
tax.initInputs();
tax.setLZZ(2); // Lohnzahlungszeitraum
tax.setKVZ(1.3); // Einkommensbezogener Zusatzbeitragssatz
tax.setSTKL(1); // Steuerklasse
tax.setPVZ(1); // Zuschlag soziale Pflegeversicherung
tax.setRE4(new Big(1234500)); // Steuerpflichtiger Arbeitslohn in Cent
tax.calculate();
tax.getLSTLZZ().toNumber(); // Lohnsteuer in Cent
You can find all fields on the test page.
As replacement for the Java BigDecimal class the library big.js and the typescript definition @types/big.js are used.
For convert xslt file into xslt sef file you have to install xslt3.
npm install -g xslt3
and
npm run compile-xsl
For compile typscript into javascript you have to install typescript.
npm install -g typescript
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