Krugman's Back

And he wants to inject the truth into the Social Security debate,

Here's the truth: by law, Social Security has a budget independent of the rest of the U.S. government. That budget is currently running a surplus, thanks to an increase in the payroll tax two decades ago. As a result, Social Security has a large and growing trust fund.

When benefit payments start to exceed payroll tax revenues, Social Security will be able to draw on that trust fund. And the trust fund will last for a long time: until 2042, says the Social Security Administration; until 2052, says the Congressional Budget Office; quite possibly forever, say many economists, who point out that these projections assume that the economy will grow much more slowly in the future than it has in the past.

So where's the imminent crisis? Privatizers say the trust fund doesn't count because it's invested in U.S. government bonds, which are "meaningless i.o.u.'s." Readers who want a long-form debunking of this sophistry can read my recent article in the online journal The Economists' Voice (www.bepress.com/ev).

The short version is that the bonds in the Social Security trust fund are obligations of the federal government's general fund, the budget outside Social Security. They have the same status as U.S. bonds owned by Japanese pension funds and the government of China. The general fund is legally obliged to pay the interest and principal on those bonds, and Social Security is legally obliged to pay full benefits as long as there is money in the trust fund.

There are only two things that could endanger Social Security's ability to pay benefits before the trust fund runs out. One would be a fiscal crisis that led the U.S. to default on all its debts. The other would be legislation specifically repudiating the general fund's debts to retirees.

That is, we can't have a Social Security crisis without a general fiscal crisis - unless Congress declares that debts to foreign bondholders must be honored, but that promises to older Americans, who have spent most of their working lives paying extra payroll taxes to build up the trust fund, don't count.