The Internal Revenue Service is a well-known agency responsible for collecting taxes in the United States. However, there are different ways to refer to this institution. Some people call it simply "the tax agency" or "tax collectors". Another synonym for the IRS would be "the taxman", which has a more informal tone. Other alternatives include "the revenue service" or "the tax authority". Whatever the name, everyone knows that the IRS is in charge of overseeing the national tax system, collecting revenues, and ensuring taxpayers comply with the tax laws. Whether you love or hate the IRS, it remains an essential part of the government.