United Kingdom
Figure 2.2 (continued)
Sweden
United States
Japan
2.6 Conclusion
This chapter analyses the sustainability of EU15 public finances in line with the recent
literature on fiscal reaction functions. According to this approach a positive response of
the primary surplus to debt accumulation is sufficient for sustainability in a wide range of
dynamic stochastic general equilibrium models, thus providing a rather general condition
for testing the sustainability of fiscal policy.
Our baseline fiscal reaction function specification assumes that the primary surplus
responds to debt accumulation and to the output gap, and also incorporates the lagged
surplus to capture fiscal inertia. The estimation of this baseline model for the sample
period 1977-2005 suggests that a positive response to debt accumulation is quite
widespread, thus indicating that fiscal policy is sustainable in most countries.
A main concern of the chapter is the robustness of this result. Therefore, we consider
several alternatives to our baseline in order to investigate the potential existence of
simultaneity bias, the effect of including and excluding different explanatory variables,
and the effect of specifying a non-linear fiscal reaction function. The qualitative baseline
result is robust to these changes. We also explore the existence of structural breaks in the
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