We examine global dynamics under infinite-horizon learning in New Keynesian models where the interest-rate rule is subject to the zero lower bound. As in Evans, Guse and Honkapohja (2008), the intended steady state is locally but not globally stable. Unstable deflationary paths emerge after...

We present a standard intertemporal model in which fiscal policy is determined by an optimizing but non-benevolent fiscal authority. If the fiscal authority is impatient, a money-based stabilization provides more fiscal discipline and higher welfare for the representative agent than does an...

This paper develops a political-economic model of fiscal policy - one in which government resources are a common property' out of which interest groups can finance expenditures on their preferred items. This setup has striking macroeconomic implications. Transfers are higher than a benevolent...

We revisit the question of what determines the credibility of macroeconomic policies here, of promises to repay public debt. Almost all thinking on the issue has focused on governments' strategic decision to default (or erode the value of outstanding debt via inflation/devaluation). But...

This paper develops a political-economic model of fiscal policy one in which" government resources are a common property' out of which interest groups can finance" expenditures on their preferred items. This setup has striking macroeconomic implications. " First, fiscal deficits and debt...

In recent years the conventional wisdom has held that fixed rates provide more fiscal discipline than do flexible rates. In this paper we show that this wisdom need not hold in a standard model in which fiscal policy is endogenously determined by a maximizing fiscal authority. The claim that...

Exchange rate policies depend on portfolio choices, and portfolio choices depend on anticipated exchange rate policies. This opens the door to multiple equilibria in policy regimes. We construct a model in which agents optimally choose to denominate their assets and liabilities either in...

We present a general equilibrium optimizing model in which we study the joint effects of centralization of wage setting and central bank conservatism on economic performance. Several striking conclusions emerge. In relatively centralized labor markets employment and output are decreasing and...

We study financial fragility, exchange rate crises and monetary policy in an open economy model in which banks are maturity transformers as in Diamond-Dybvig. The banking system, the exchange rate regime, and central bank credit policy are seen as parts of a mechanism intended to maximize social...

Using an optimizing model we derive the optimal monetary and exchange rate policy for a small stochastic open economy with imperfect competition and short run price rigidity. The optimal monetary policy has an exact closed-form solution and is obtained using the utility function of the...