Public debt, the unit root hypothesis and structural breaks: a multi-country analysis

We assess fiscal performances in G7 and selected Latin American and Asian countries. We analyze two questions: (i) have public finances been sustainable? (ii) do countries follow more restrictive fiscal policies when debt starts to rise? We find that: (i) The traditional unit root tests often overlook the corrective actions taken by many governments. Controlling for structural breaks changes the nonstationarity results dramatically among the three groups; (ii) Estimation of a reaction function for governments, expanded by incorporating structural breaks, provides further evidence for significant active anti-debt policies among the G7 and to a lesser extent in the other regions.