Answer: A progressive tax
Explanation: A progressive tax has a direct relationship with the income earned, that is, it increases as the income increases. The tax rate applied to each income level varies such that low-income earners pay less than high-income earners but people who earn the same income pay the same amount.
Other types of taxes are proportional tax which taxes all income levels equally and regressive tax which translates into higher taxes for low-income earners.