# Internal Revenue Service (IRS) > The Internal Revenue Service (IRS) is the federal agency of the United States responsible for the collection of taxes and the enforcement of internal revenue laws. It functions as a bureau within the Department of the Treasury and handles the majority of the federal government's revenue through individual and corporate income taxes. - URL: https://optimly.ai/brand/internal-revenue-service-irs - Slug: internal-revenue-service-irs - BAI Score: 98/100 - Archetype: Challenger - Category: Government Agency