finjs

• Financial calculator for taxes: calculate net, VAT and gross amounts.
• 🇩🇪 Finanzrechner: Steuer, Netto, MwSt und Brutto berechnen.

Features:

• correct floating point calculations.
• calculate taxes, net, VAT and gross amounts.
• set precision of decimal places

Development features:

• unit tests for every function
• UMD (Universal Module Definition) - runs in Node, AMD or browser.

Install

• node.js: npm i --save finjs
• browser: <script src="/path/to/fin.js"></script>

Use

Addition and Multiplication

• fin(0.1 + 0.2) === 0.3; // true
• fin(2.18 * 100) === 218; // true

Net, Vat and Gross

• fin.vat(100) === 19; // true
• fin.gross(100) === 119; // true
• fin.net(119) === 100; // true
• fin.vatFromGross(119) === 19; // true
• fin.validateNetVatGross([100, 19, 119]) === true; // true

Roadmap

• Create user-friendly github.io page for the calculations with social links.
• Add additional functions as needed for the creating of German invoices and calculation of taxes.

Support

• If you find any issue or have a question, please open a GitHub issue.

License

MIT

Inspiration

• Inspired by Fincalc.

History

• 0.0.2 - add fin.validateNetVatGross([net, vat, gross]) function and tests.
• 0.0.1 - initial commit