This paper provides a tractable framework to assess how the structure of debt instruments—specifically by currency denomination and indexation to GDP—can raise the debt limit of a sovereign. By calibrating the model to different country fundamentals, it is clear that there is no one-size-fits-all approach to optimal instrument design. For instance, low income countries may find benefit in issuing local currency debt; while in advanced economies debt tolerance can be substantially enhanced through issuing GDP-linked bonds. By looking at the marginal impact of these instruments, the paper also provides insight into the optimal portfolio compostion.

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This report discusses how the total debt of the federal government can increase, a historical overview of debt limits, and how the current economic slowdown has led to higher deficits and thereby a series of debt limit increases, as well as legislation related to these increases.

Considers Administration proposal to increase the permanent public debt ceiling to finance Federal expenditures, especially the Vietnam Conflict. Focuses on jurisdictional relationships between the Federal Reserve System and the Treasury Dept in setting and implementing monetary policy.