Question: Which of the following example(s) describe a proportional tax?
- Social Security tax rate of 6.2% on earned income below $117,000 and 0% on income earned above $117,000
- Medicare payroll tax of 2.9% of income for everyone, regardless of how much they earn
- Income tax with a 10% tax rate on low income households and 20-30% tax rates on higher income households