Answer: C
Step-by-step explanation:
A proportional tax is an income tax system where the same percentage of tax is levied on all taxpayers, regardless of their income. A proportional tax applies the same tax rate across low, middle, and high-income taxpayers.
In contrast, the progressive tax system adjusts tax rates by incomes. A marginal rate taxing system, such as the flat tax, has a constant rate for both businesses and individual taxpayer . In some instances, a sales tax can also be considered a type of proportional tax since all consumers, regardless of earnings, are required to pay the same fixed rate. The sales tax rate applies to goods and services, and the income of the purchaser is not a part of the equation. Other examples include poll taxes and the capped portion of the Federal Insurance Contributions Act (FICA) payroll deductions.
In a proportional tax system, all taxpayers are required to pay the same percentage of their income in taxes. For example, if the rate is set at 20%, a taxpayer earning $10,000 pays $2,000 and a taxpayer earning $50,000 pays $10,000. Similarly, a person earning $1 million would pay $200,000.