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It's not the size, but how you use it: A note on the debt-ceiling limit

According to the New York Times we barely averted the government shutdown to move on to the war over the debt-ceiling limit. Tim Geithner has argued that the government will hit, no later than May 16, the federal debt-ceiling limit of US$ 14,2 trillion. In fact, contrary to what one might expect the debt-ceiling limit is often increased. The question, of course, is whether the increase in debt vis-à-vis the capacity to repay, normally measuring debt as a share of GDP, is of such magnitude that the economy is doomed.

When we hit the limit, federal public debt will be slightly below the 100% mark. Historically, is not the highest debt-to-GDP level in the US, neither unprecedented by historical standards. The graph below shows British debt-to-GDP from 1692 to 2011.

The peak in British debt, at the end of the Napoleonic wars, was about 260%, and it had grown consistently during the 18th century. David Hume argued in 1752 that: “either the Nation must destroy public credit, or public credit will destroy the Nation.” He was obviously wrong (that’s probably why his theories are still taught by economists!). Not only public debt, which is what he meant by public credit, did not bankrupt the UK, but also it allowed for an Industrial Revolution and the victory in the hegemonic wars against France. A pile of debt laid the foundations for the Victorian economy boom and world dominance.

Note that during the 18th century the UK had higher taxes to pay for the higher debt levels than France, but interest rates were considerably lower, which implied that the burden of debt (interest payments out of total spending) was not much bigger than in France. James MacDonald has a very good book on the British debt history.

This suggests that more important than the growing debt-to-GDP ratio in the US is how it is used, and how it is funded. The function of the deficits and debt is more important than the size, as Abba Lerner argued. Hence, if we spend money to create jobs (e.g. remaking the infrastructure) and tax the rich rather then cut spending on programs for the poor, increasing the debt-ceiling limit should be a no-brainer.


  1. Let's hope the Dems don't bow to GOP pressures then. It's been hard enough.

  2. Oh wait... from the Associated Press

    "Obama's speech will set a new long-term deficit-reduction goal and establish a dramatically different vision from a major Republican proposal that aims to cut more than $5 trillion over the next decade, officials said Monday.

    Details of Obama's plan are being closely held so far, but the deficit-cutting target probably will fall between the $1.1 trillion he proposed in his 2012 budget proposal and the $4 trillion that a fiscal commission he appointed recommended in December."

    Link to Article

  3. Well at least there is some talk that Obama will start defending higher taxes for the rich (above 250K).

  4. And notably, the British debt wasn't exactly temporary, they spend just over 100 years with a public debt greater than 100% of GDP! If that doesn't force a rethinking of what sustainable debt means, I don't know what does.

  5. Of course that would mean people care about evidence.


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