The Internal Revenue Service (IRS) is the agency of the United States federal government responsible for administering and enforcing tax laws. It oversees the collection of federal taxes, including income, payroll, and corporate taxes, ensuring that individuals and businesses comply with tax regulations. The IRS also processes tax returns and issues refunds to taxpayers. In addition to tax collection, the IRS provides resources and assistance to help taxpayers understand their obligations. It offers guidance on tax forms, deductions, and credits, and conducts audits to verify compliance. The agency plays a crucial role in funding government operations through tax revenue.