IMF Staff Position Notes

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Jonathan David Ostry, Atish R. Ghosh, Jun I Kim, and Mahvash S Qureshi. Fiscal Space, (USA: International Monetary Fund, 2010) accessed November 23, 2024

Summary

In this note, the authors reexamine the issue of debt sustainability in a large group of advanced economies. Their hypothesis is that, when debt is in a moderate range, its dynamics are sustainable in the sense that increases in debt elicit sufficient increases in primary fiscal balances to stabilize the debt-to-GDP ratio. At high debt levels, however, the dynamics may turn unstable, and the debt ratio may not converge to a finite level. Such a framework allows the authors to define a “debt limit” that is consistent with a country’s historical track record of adjustment in the sense that, without an extraordinary fiscal effort, any debt increment beyond this limit would cause debt to increase without bound. This debt limit is not an absolute and immutable barrier, however, but rather defines a critical point above which a country’s normal fiscal response to rising debt becomes insufficient to maintain debt sustainability. Nor should this debt limit be interpreted as being in any sense the optimal level of public debt. Indeed, since this limit delineates the point at which fiscal solvency is called into question—and the analysis abstracts entirely from liquidity/rollover risk—prudence dictates that countries will typically want to be well below their debt limit. Given a country’s normal pattern of adjustment, “fiscal space” is then simply the difference between its debt limit and its current level of debt.

Subject: Asset and liability management, Debt limits, Financial services, Fiscal policy, Fiscal space, Fiscal stance, Market interest rates, Public debt

Keywords: Debt limit, Debt limits, Fiscal space, Fiscal stance, Interest rate, Interest rate schedule, Interest rate-growth differential, Interest rate-growth rate differential, Interest rate-growth rate schedule, Interest rate-output growth rate differential, Market interest rates, Model-implied interest rate, Public debt debt ratio, Risk-free interest rate, Southern Europe, SPN

Publication Details

  • Pages:

    25

  • Volume:

    ---

  • DOI:

    ---

  • Issue:

    ---

  • Series:

    Staff Position Note No. 2010/011

  • Stock No:

    SPNEA2010011

  • ISBN:

    9781455228010

  • ISSN:

    2617-6742