Despite growing interest among policymakers, there is no theory of independent fiscal institutions. The emerging literature on "fiscal councils" typically makes informal parallels with the theory of central bank independence, but a very simple formal example shows that such a shortcut is flawed....

This paper develops a full-fledged cost-benefit analysis of monetary integration, and applies it to the currency unions actively pursued in Africa. The benefits of monetary union come from a more credible monetary policy, while the costs derive from real shock asymmetries and fiscal disparities....

We develop a multicountry model in which governments aim at excessive spending in order to serve the narrow interests of the group in power. This puts pressure on the monetary authorities to extract seigniorage, and thus affects the incentives countries would have to participate in a monetary...