In his Budget, the President proposes to raise $1.56 trillion in revenue from high-income households, including $1 trillion from the expiration of the Bush high-income and estate tax cuts and additional revenue from limiting tax expenditures for high-income households as a part of reforming the tax system to make it simpler, fairer and more efficient. Some have suggested that limits on high-income tax expenditures could substitute for rate increases and that it would be possible to raise $1 trillion or more while keeping the top income tax rate at 35 percent. But a careful look at the math of these types of caps and limits shows that, once one takes into account the reality of their impact on middle-class families and on charitable donations, plausible limits raise only a fraction of the $1 trillion or more some have suggested. Consider the example of a $25,000 cap on itemized deductions, which some claim would raise in the range of $1 trillion or more from high-income households: read more

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Limiting Tax Deductions: The Reality of the Math