Final answer:
There are currently seven different tax brackets in the United States, with progressive tax rates.
Step-by-step explanation:
In the United States, there are currently seven different tax brackets. These brackets represent different income ranges and have corresponding tax rates. The tax rates are progressive, which means that as your income increases, your tax rate also increases.
For example, for the tax year 2021, the lowest tax bracket is 10% for individuals with a taxable income of up to $9,950. The highest tax bracket is 37% for individuals with a taxable income over $523,600.
It's important to note that tax brackets can change over time due to legislative changes.
Learn more about Tax brackets in the United States