If you make RM 2,000,000 a year living in Malaysia, you will be taxed RM 735,393. That means that your net pay will be RM 1,264,607 per year, or RM 105,384 per month. Your average tax rate is 36.8% 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 40.25, hence, your net pay will only increase by RM 59.75.
A RM 1,000 bonus will generate an extra RM 598 of net incomes. A RM 5,000 bonus will generate an extra RM 2,988 of net incomes.