If you make S$85,200 a year living in Singapore, you will be taxed S$17,036. That means that your net pay will be S$68,164 per year, or S$5,680 per month. Your average tax rate is 20.0% and your marginal tax rate is 7.0%. This marginal tax rate means that your immediate additional income will be taxed at this rate. For instance, an increase of S$100 in your salary will be taxed S$7, hence, your net pay will only increase by S$93.
A S$1,000 bonus will generate an extra S$930 of net incomes. A S$5,000 bonus will generate an extra S$4,650 of net incomes.
NOTE* Withholding is calculated based on the tables of Singapore, income tax. For simplification purposes some variables (such as marital status and others) have been assumed. Earned Income Relief of 1,000 (age is under 55) has been used for the calculation. This document does not represent legal authority and shall be used for approximation purposes only.