Final answer:
A proportional tax, also known as a flat tax, applies a constant tax rate to all income levels.
Explanation:
Proportional Tax: Also known as a flat tax, it applies the same flat tax rate to all income levels, ensuring the tax percentage remains constant regardless of income. For example, a person making [tex]$20,000 would pay the same rate as one making $[/tex]120,000 under a proportional tax system.
Learn more about tax structures here:
https://brainly.com/question/37865082
