If you make RM 2,000,000 a year living in Malaysia, you will be taxed RM 739,315. That means that your net pay will be RM 1,260,685 per year, or RM 105,057 per month. Your average tax rate is 37.0% and your marginal tax rate is 40.3%. This marginal tax rate means that your immediate additional income will be taxed at this rate. For instance, an increase of RM 100 in your salary will be taxed RM 40.34, hence, your net pay will only increase by RM 59.66.
A RM 1,000 bonus will generate an extra RM 597 of net incomes. A RM 5,000 bonus will generate an extra RM 2,983 of net incomes.