Lane Kenworthy on Reducing Inequality: How to Pay for It:
But while it may be smart electoral politics, committing not to increase taxes’ share of GDP, as Blair did, or to lower taxes for most of the population, as Obama has done, makes it difficult for a government to make much headway in addressing income inequality. Obama has some leeway; the economic crisis has necessitated increases in government spending that can justifiably excuse some backtracking on his campaign pledge. Fully consistent with his promise, he should increase the tax rate on high-end incomes (beyond simply letting the Bush reductions expire). Two other progressive tax reforms are worth pursuing, though they would affect some in the bottom 95%. One is to reduce or end the homeownership subsidy. More than 80% of the $160 billion in foregone revenues from the deduction for mortgage interest and property tax payments goes to households in the top income quintile. The other is to introduce a modest tax on financial transactions.
But should the focus be confined to steps that make the tax system more progressive? Many on the left view heightened progressivity as the key to inequality reduction. Yet in the United States and other rich countries the tax system overall, including taxes of all types and at all levels of government, is essentially flat; households throughout the income distribution pay roughly similar shares of their market income in taxes.
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