How are progressive taxes and regressive taxes similar? Both charge high-income individuals more. Both are considered flat taxes. Both are determined based on income. Both are types of indirect taxes.

Progressive taxes are those tax amounts that increase when the payer’s income also increases. On the other hand, regressive taxes are charged more to the low-income generating individuals. That said, the lower income a person have then, the higher is the amount of the tax that needs to be paid. The similarity of these two taxes is that they are both determined based on a person’s income. Thus, the answer is the third choice.