Two new types of consumption taxes are proposed as replacements for th
e income tax in the United States: the ''flat expenditure tax'' and th
e ''value-added tax.'' Both of these consumption taxes have been viewe
d as being much easier to comply with by individuals and businesses. T
his paper examines the implementation issues arising from such radical
tax reform: complexity, transition arrangements, international issues
, and federal-state fiscal harmony. The overall conclusion is that nei
ther the flat expenditure tax nor valve-added tax would lead to a simp
lification of the tax system compared to the income tax.