Rand Paul’s tax plan would result in an “enormous” tax cut for the wealthy, a new analysis says. But lower-income Americans would also benefit: their effective rate would be nearly zero.

In a post titled “Rand Paul’s tax cut isn’t quite what it seems,” Howard Gleckman of the Tax Policy Center takes a look at a new plan from Paul, the Kentucky Republican senator who is running for president. Paul floated the idea of a 14.5% flat tax in a Wall Street Journal op-ed published Wednesday. He also calls for eliminating the payroll tax on workers, as well as the estate tax. But he would keep the deductions for mortgage interest and charitable giving.