TAX WHAT YOU DON'T WANT, NOT WHAT YOU DO:

What would a minimally damaging, simple, fair tax code look like? First, the corporate tax should be eliminated. Every dollar of taxes that a corporation seems to pay comes from higher prices to its customers, lower wages to its workers, or lower dividends to its shareholders. Of these groups, wealthy individual shareholders are the least likely to suffer. If taxes eat into profits, investors pay lower prices for less valuable shares, and so earn the same return as before. To the extent that taxes do reduce returns, they also financially hurt nonprofits and your and my pension funds.

With no corporate tax, arguments disappear over investment expensing versus depreciation, repatriation of profits, too much tax-deductible debt, R&D deductions, and the vast array of energy deductions and credits.

Second, the government should tax consumption, not wages, income or wealth. When the government taxes savings, investment income, wealth or inheritance, it reduces the incentive to save, invest and build companies rather than enjoy consumption immediately. Taxes on capital gains discourage people from moving or reallocating capital toward their most productive uses.

Recognizing the distortion, the federal government provides a complex web of shelters, including IRAs, Roth IRAs, 527(b), 401(k), health-savings accounts, life-insurance exemptions, and the panoply of trusts that wealthy individuals use to shelter their wealth and escape the estate tax. If investment isn't taxed, these costly complexities can disappear.

All the various deductions, credits and exclusions should be eliminated--even the holy trinity of tax breaks for mortgage interest, charitable donations and employer-provided health insurance. The extra revenue, over a trillion dollars annually, could finance a large reduction in marginal rates. This step would also simplify the code and make it fairer.

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