Senator Marco Rubio would convert the income tax into a progressive consumption tax, an ambitious idea that would eliminate the income tax’s penalty on saving. However, a new Tax Policy Center analysis finds that Rubio’s version would slash federal tax revenues by $6.8 trillion over the next decade with most of the benefits going to high-income households. Unless Rubio offsets those revenue losses with big spending cuts, he’d lose most if not all of the economic benefit of his plan.

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