A tax rate is the percentage at which an individual or business is taxed on their income or profits. It determines how much money must be paid to the government based on earnings. Tax rates can vary depending on the type of tax, such as income tax, sales tax, or property tax, and can be progressive, flat, or regressive. Governments use tax rates to generate revenue for public services like education, healthcare, and infrastructure. Different countries and regions may have different tax rates, and these rates can change over time due to new laws or economic conditions.