Whether the sustainability of public debt is promoted or foiled by credit market imperfections depends upon the fiscal policy rules. Under the golden rule, as credit constraints dissipate, public debt is more likely sustainable, whereas under the balanced budget rule, it is less likely...

We investigate how large a primary deficit-to-GDP ratio Japan’s government can sustain. For this investigation, we construct an overlapping generations model in which multi-generational households live and the government maintains a constant ratio of the primary deficit to GDP. We numerically...