Who can determine how much people pay in taxes?

Tax rates and policies are typically determined by government authorities, such as legislatures or parliaments, which pass tax laws. Additionally, tax agencies, such as the Internal Revenue Service (IRS) in the United States, are responsible for implementing and enforcing these laws. Local, state, and federal governments can all set different tax rates, depending on their jurisdiction and the types of taxes involved. Ultimately, tax policy is shaped by political decisions, economic conditions, and public input.