Summary
If you make Rp. 321,487,296 a year living in Indonesia, you will be taxed Rp. 56,695,288. That means that your net pay will be Rp. 264,792,008 per year, or Rp. 22,066,001 per month. Your average tax rate is 17.6% and your marginal tax rate is 27.3%. This marginal tax rate means that your immediate additional income will be taxed at this rate. For instance, an increase of Rp. 100 in your salary will be taxed Rp. 27.25, hence, your net pay will only increase by Rp. 72.75.
Bonus Example
A Rp. 1,000 bonus will generate an extra Rp. 728 of net incomes. A Rp. 5,000 bonus will generate an extra Rp. 3,638 of net incomes.