Mitt Romney's campaign says I'm full of it. I said Romney's tax plan is mathematically impossible: he can't simultaneously keep his pledges to cut tax rates 20 percent and repeal the estate tax and alternative minimum tax; broaden the tax base enough to avoid growing the deficit; and not raise taxes on the middle class. They say they have six independent studies -- six! -- that "have confirmed the soundness of the Governorís tax plan," and so I should stop whining. Let's take a tour of those studies and see how they measure up.
The Romney campaign sent over a list of the studies, but they are perhaps more accurately described as "analyses," since four of them are blog posts or op-eds. I'm not hating -- I blog for a living -- but I don't generally describe my posts as "studies."
None of the analyses do what Romney's campaign says: show that his tax plan is sound. I'm going to walk through them individually, but first I want to make a broad point.
The Tax Policy Center paper that sparked this discussion found that Romney's plan couldn't work because his tax rate cuts would provide $86 billion more in tax relief to people making over $200,000 than Romney could recoup by eliminating tax expenditures for that group. That means his plan is necessarily a tax cut for the rich, so if Romney keeps his promise not to grow the deficit, he'll have to raise taxes on the middle class.