Summary
If you make USh 4,221,000 a year living in Uganda, you will be taxed USh 393,483. That means that your net pay will be USh 3,827,517 per year, or USh 318,960 per month. Your average tax rate is 9.3% and your marginal tax rate is 26.1%. This marginal tax rate means that your immediate additional income will be taxed at this rate. For instance, an increase of USh 100 in your salary will be taxed USh 26.11, hence, your net pay will only increase by USh 73.89.
Bonus Example
A USh 1,000 bonus will generate an extra USh 739 of net incomes. A USh 5,000 bonus will generate an extra USh 3,695 of net incomes.