This article, based on two books (Barr and Diamond 2008, forthcoming), sets out a series of principles for pension design rooted in economic theory: pension systems have multiple objectives, analysis should consider the pension system as a whole, analysis should be framed in a second-best...

Two of the Social Security Commission's plans restore actuarial balance without their individual accounts, primarily or entirely through benefit reductions. Both have voluntary carve-out individual accounts, with one requiring (subsidized) add-on contributions for opening accounts. "Liability...

The President's Commission to Strengthen Social Security proposed three reform plans. Two, analyzed here, restore actuarial balance in the absence of individual accounts. One achieves this balance solely through benefit reductions. The other uses new dedicated revenue to cover one-third of the...