Beck, Roland, Ferrucci, Gianluigi, Hantzsche, Arno, Rau-Goehring, Matthias, (2016), “Determinants of sub-sovereign bond yield spreads: the role of fiscal fundamentals and federal bailout expectations”, European Central Bank, 9 Δεκεμβρίου
This paper investigates to what extent yield spreads on bonds issued by sub-sovereign entities within federations are driven by bailout expectations and investors’ risk appetite, as opposed to fundamental values related to default risk. The question is analysed both across and within federations using a novel dataset for sub-sovereign governments that includes Australian states, Canadian provinces, Swiss cantons, German Länder, US states, Spanish communities, and Indian states. The paper finds that, regardless of the prevailing set-up of the federal system, sub-sovereign debt levels relative to GDP and global risk aversion are important drivers of sub-sovereign spreads. Moreover, within federations, the market’s expectation of a federal bailout of the sub-sovereign entity and the capacity of the federal government to provide support to the weaker members of the federation affect the extent to which fundamental factors are priced into spreads. In particular, the paper shows that the positive link between debt and risk premia tends to break down when sub-sovereign government debt rises above certain thresholds. This could reflect the market’s expectation of a federal bailout as fundamentals deteriorate. Additionally, larger sub-sovereign entities tend to pay higher premia as fundamentals worsen which could be linked to the limited capacity of the federal government to provide support as the size of the expected bailout increases. A pattern of rising risk premia as fundamentals worsen is also found for sub-sovereign entities when the central government faces borrowing constraints.
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