The Barnett critique states that there is an internal inconsistency between the theory that is implied by simple sum monetary aggregation (perfect substitutability among components) and the economic theory that produces the models within which those aggregates are used. That inconsistency causes...

We provide a quantitative assessment of the welfare cost of tax competition or, equivalently, the welfare benefit of international tax policy cooperation. We use a simple multi-country general equilibrium model of a world economy, in which there are two types of cross-country spillovers: the...

We welfare rank various tax-spending-debt policies in a New Keynesian model of a small open economy featuring sovereign interest-rate premia and loss of monetary policy independence. When we compute optimized state-contingent policy rules, our results are: (a) Debt consolidation comes at a...