"Tax-free retirement" has a nice ring to it. If, like two-thirds of Americans, you are unsure you've saved enough for your out years, it's especially nice to know that Uncle Sam won't be pinching a slice of your meager pie. Or maybe you're an ample saver convinced by the tax talk in Washington that the feds will undo your careful planning by raising taxes by the time you call it quits. 
No wonder financial advisors say that current clients and prospects have taxes on their minds, or that titles containing "tax free" are popping up on the personal finance shelves at the bookstore
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