Internal Revenue Code (IRC)
The Internal Revenue Code is the domestic portion of federal statutory tax law in the United States, published in various volumes of the United States Statutes at Large, and separately as Title 26 of the United States Code (USC). It is organized topically, into subtitles and sections, covering income tax (see Income tax in the United States),payroll taxes, estate taxes, gift taxes, and excise taxes; as well as procedure and administration. Its implementing agency is the Internal Revenue Service. IRC code governing tax-deferred employer-sponsored retirement savings plans include 401(k), 457, 403(b) as well as tuition assistance programs such as 529 plans.