Obama and the Tax Tipping Point

By ADAM LERRICK

In 2006, the latest year for which we have Census data, 220 million Americans were eligible to vote and 89 million -- 40% -- paid no income taxes. According to the Tax Policy Center (a joint venture of the Brookings Institution and the Urban Institute), this will jump to 49% when Mr. Obama's cash credits remove 18 million more voters from the tax rolls. What's more, there are an additional 24 million taxpayers (11% of the electorate) who will pay a minimal amount of income taxes -- less than 5% of their income and less than $1,000 annually.

In all, three out of every five voters will pay little or nothing in income taxes under Mr. Obama's plans and gain when taxes rise on the 40% that already pays 95% of income tax revenues.

The plunder that the Democrats plan to extract from the "very rich" -- the 5% that earn more than $250,000 and who already pay 60% of the federal income tax bill -- will never stretch to cover the expansive programs Mr. Obama promises.

What next? A core group of Obama enthusiasts -- those educated professionals who applaud the "fairness" of their candidate's tax plans -- will soon see their $100,000-$150,000 incomes targeted. As entitlements expand and a self-interested majority votes, the higher tax brackets will kick in at lower levels down the ladder, all the way to households with a $75,000 income.

Calculating how far society's top earners can be pushed before they stop (or cut back on) producing is difficult. But the incentives are easy to see. Voters who benefit from government programs will push for higher tax rates on higher earners -- at least until those who power the economy and create jobs and wealth stop working, stop investing, or move out of the country.

Tomorrow's children may come to question why their parents sold their birthright for a mess of "fairness" -- whatever that will signify when jobs are scarce and American opportunity is no longer the envy of the world.

Mr. Lerrick is a professor of economics at Carnegie Mellon University and a visiting scholar at the American Enterprise Institute.