australian-tax-rate

return tax rate based on annual income

usage:

  npm install australian-tax-rate

var taxRate = require('australian-tax-rate');
//...
var pay = gross*(1 - taxRate(gross));

This is what ATO says about personal tax:

| Taxable income | Tax on this income | | ------------------|--------------------| | 0 – $18,200 | Nil | | $18,201 – $37,000 | 19c for each $1 over $18,200 | | $37,001 – $80,000 | $3,572 plus 32.5c for each $1 over $37,000 | | $80,001 – $180,000| $17,547 plus 37c for each $1 over $80,000 | | $180,001 and over | $54,547 plus 45c for each $1 over $180,000 |

Above as graphs: