The Internal Revenue Service (IRS) is a government agency responsible for administering and enforcing tax laws and collecting federal taxes from U.S. individual and corporate taxpayers. The IRS is a bureau of the Department of the Treasury and one of the worlds most efficient tax administrators. The mission of the IRS is to provide Americas taxpayers top quality service by helping them understand and meet their tax responsibilities and to enforce the law with integrity and fairness to all. The IRS routinely conducts audits to ensure that taxpayers comply with tax laws. The agency was established in 1862 and handles gift, excise, and estate taxes in addition to income taxes. The IRS provides a free electronic filing online portal to file Form 1099 series information returns called the Information Returns Intake System (IRIS) . Taxpayers can also use the IRS2Go mobile app to check their tax refund status and get tax updates.