Final answer:
The United States currently has 7 different tax brackets, each with different tax rates based on income levels.
Step-by-step explanation:
In the United States, there are currently 7 different tax brackets. A tax bracket represents a range of income levels and corresponding tax rates. Each tax bracket has a different tax rate, and as your income increases, you move into a higher tax bracket with a higher tax rate. For example, the lowest tax bracket for the year 2021 is 10%, and the highest tax bracket is 37%.
Learn more about tax brackets in the United States