Generally, income tax systems are progressive, meaning a high income earner has to pay a higher rate. Tax systems vary from country to country; however, often tax systems contain numerous tax slabs or brackets in them. Generally, income tax systems are progressive, meaning a high income earner has to pay a higher rate. Tax systems vary from country to country; however, often tax syste... https://finxl.in/advance-excel-online-classes-courses-training.html