The day the US defaulted on treasury bills
Saying that the US hasn't defaulted on federal debt since the days of Alexander Hamilton is great rhetoric. If only it were true.
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T-bill rates spiked upwards four times in the months around the default. In November 1978, Henry “Dr. Doom” Kaufman predicted that interest rates would rise. They did. Turn-of-the-year cash management caused rates to fall and then rise as 1978 became 1979. And rates spiked and fell in October 1979 when Paul Volcker announced that the Fed would target monetary aggregates rather than interest rates (the “Saturday night special”).Skip to next paragraph
Donald B. Marron is director of the Urban-Brookings Tax Policy Center. He previously served as a member of the President's Council of Economic Advisers and as acting director of the Congressional Budget Office.
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The fourth big move was the day of the first default, when T-bill rates rose almost 0.6 percentage points (i.e., 60 basis points).There’s no indication this increase reversed in the days that followed (the vertical line on the chart is just a marker for the day of default). Indeed, using more sophisticated means, including comparing T-bill rates to interest on commercial paper, the authors conclude that default led to a persistent increase in T-bill rates and, therefore, higher borrowing costs for the federal government.
The financial world has changed dramatically in the intervening decades. T-bill rates hover near zero compared to the 9-10 percent range of the late 1970s; that means a temporary delay in payments would be less costly for creditors. Treasury’s IT systems are, one hopes, more reliable that 1970s vintage word processors. And one should take care not to make too much of a single data point.
But it’s the only data point we have on a U.S. default. Not surprisingly it shows that even temporary default is a bad idea.
P.S. Some observers believe the United States also defaulted in 1933 when it abrogated the gold clause. The United States made its payments on time in dollars, but eliminated the option to take payment in gold. For a quick overview of this and related issues, see this blog post by Catherine Rampell at the New York Times and the associated comments.
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