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Forgive, or Award, Your Debtor? - A Barrier Option Approach

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  • Sun, David
  • Chow, Da-Ching

Abstract

We introduced in this study a model of sovereign debt with an embedded Down-and-In Put (DIP) to capture the discontinuity in sovereign debt pricing. This study suggests that debt forgiveness is a more effective solution in debt crisis, as repayment bonus or award or capital market exclusion penalty invites moral hazard and push up yields. Although a debtor’s current repayment capability reflects its current levels of repayment award, debt forgiveness or default threshold. While forgiveness works unconditionally, a debtor can only receive repayment award conditional on full debt repayment, which could result in unfavored consequences due to moral hazard. A creditor should therefore avoid offering repayment award to, or attempting to lower default threshold on, a debtor. Granting more forgiveness is, however, beneficial always. Overall, a strong GDP growth is still the most effective solution to lower long-run sovereign yields. Reexamining the argument of Krugman (1988) verifies that extra financing is indeed inferior to forgiveness. The forecasting errors in our model are only at fractions of those produced by other related studies, as our unscented Kalman filter procedure is free of potential econometric problems. Our model of default threshold for sovereign debt is more tractable than existing works in literature, especially in the calibration of sovereign yields under various debt load levels, economic cycles, time to maturity and forecasting capability. Our model can be applied in the operation of risk management, as well as portfolio investments, for investors of sovereign debt instruments.

Suggested Citation

  • Sun, David & Chow, Da-Ching, 2014. "Forgive, or Award, Your Debtor? - A Barrier Option Approach," MPRA Paper 44826, University Library of Munich, Germany, revised 06 Jan 2014.
  • Handle: RePEc:pra:mprapa:44826
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    References listed on IDEAS

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    More about this item

    Keywords

    Default risks; sovereign debt; government bonds; debt forgiveness; default threshold; fixed income; barrier option.;
    All these keywords.

    JEL classification:

    • C14 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Semiparametric and Nonparametric Methods: General
    • D81 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Criteria for Decision-Making under Risk and Uncertainty
    • D86 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Economics of Contract Law
    • F34 - International Economics - - International Finance - - - International Lending and Debt Problems
    • G01 - Financial Economics - - General - - - Financial Crises
    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates

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