Steven Landsburg: The Case for a National Sales Tax
University of Rochester economist Steven E. Landsburg (author of Armchair Economics) comes out in support of Huckabee's national sales tax in his most recent Slate.com column titled "Huckabee's Tax Plan Is Brilliant: So why is it getting trashed?":
A national sales tax is the exact equivalent of an income tax with a provision for unlimited IRA contributions (and no withdrawal penalties). The merits and demerits of the Huckabee tax plan are identical to the merits and demerits of a vastly liberalized IRA policy.
A lot of economists, myself included, think that there's a lot to be said for unlimited IRAs. Any conceivable tax system discourages work, which is unfortunate but unavoidable. But the current system also discourages saving, which is avoidable. A liberalized IRA policy—or, equivalently, a sales tax—eliminates that problem.
Bottom line: Unlimited IRAs, coupled with somewhat higher tax rates, have advantages and disadvantages, but the advantages are bigger. And whatever can be said about unlimited IRAs coupled with somewhat higher tax rates can equally be said of a national sales tax.