No one has officially announced that Social Security will be cash-negative this year. But you can figure it out for yourself, as I did, by comparing two numbers in the recent federal budget update that the nonpartisan CBO issued last week.
The first number is $120 billion, the interest that Social Security will earn on its trust fund in fiscal 2010 (see page 74 of the CBO report). The second is $92 billion, the overall Social Security surplus for fiscal 2010 (see page 116).
This means that without the interest income, Social Security will be $28 billion in the hole this fiscal year, which ends Sept. 30.
Why disregard the interest? Because as people like me have said repeatedly over the years, the interest, which consists of Treasury IOUs that the Social Security trust fund gets on its holdings of government securities, doesn't provide Social Security with any cash that it can use to pay its bills. The interest is merely an accounting entry with no economic significance.
But this year's Social Security cash shortfall is a watershed event. Until this year, Social Security was a problem for the future. Now it's a problem for the present.