About IRS :
 The IRS mission is to provide America's taxpayers top quality service by helping them understand and meet their tax responsibilities and to enforce the law with integrity and fairness to all.
  Statutory Authority
We're organized to carry out the responsibilities of the Treasury secretary per Internal Revenue Code (IRC) Section 7801. The IRS was created based on the secretary's authority to administer and enforce the internal revenue laws.
 The Agency
    The IRS is a bureau of the Department of the Treasury and one of the world's most efficient tax administrators. In fiscal year 2020, the IRS collected almost $3.5 trillion in revenue and processed more than 240 million tax returns. The IRS spent just 35 cents for each $100 it collected in FY 2020.