Summary
If you make $369,687,500 a year living in New Zealand, you will be taxed $144,160,238. That means that your net pay will be $225,527,262 per year, or $18,793,938 per month. Your average tax rate is 39.0% and your marginal tax rate is 39.0%. This marginal tax rate means that your immediate additional income will be taxed at this rate. For instance, an increase of $100 in your salary will be taxed $39, hence, your net pay will only increase by $61.
Bonus Example
A $1,000 bonus will generate an extra $610 of net incomes. A $5,000 bonus will generate an extra $3,050 of net incomes.