validate Australian Tax File Number
npm install tfn
var tfn = require('tfn');
//...
var tfnStatus = tfn('123 456 789');
console.log(tfnStatus);
// logs { valid: false, suggestion: '123456782' }
- https://en.wikipedia.org/wiki/Tax_file_number
- http://www.mathgen.ch/codes/tfn.html
- australian-business-number - validate ABN
- australian-tax-rate - calculate tax rate based on taxable income