Date Certain Tax Code Replacement Act

[AI summary unavailable — showing source text] Date Certain Tax Code Replacement Act - Prohibits the imposition of any tax by the Internal Revenue Code: (1) for any taxable year beginning after December 31, 2004; and (2) in the case of any tax not imposed on the basis of a taxable year, on any taxable event or for any period after December 31, 2004. Excepts the: (1) tax on self-employment income (chapter 2 of the Code); (2) Federal Insurance Contributions Act (chapter 21 of the Code); and (3) Railroad Retirement Tax Act (chapter 22 of the Code). Establishes the National Commission on Tax Reform and Simplification to review: (1) the present structure and provisions of the Code; (2) whether the tax systems of other countries could provide more efficient and fair methods of funding government revenue requirements; (3) whether the income tax should be replaced with a tax imposed in a different manner or on a different base; and (4) whether the Code can be simplified, absent wholesale restructuring or replacement. Requires a Commission report to Congress on review results, with recommendations for Code reform and simplification. Terminates the Commission 90 days after such report. Authorizes appropriations (with interim funding). De…