This document discusses fiscal federalism and problems faced by local governments. It notes that many countries have stratified or tiered systems of government with different levels having taxing powers, which can cause fiscal problems. There are issues around which level of government should fund and provide different services. Local governments face social problems like poverty and declining quality of spending. Their tax bases are often inelastic while expenditures are growing. Rationales for local government systems include matching geographic benefits of public goods to decision-making costs. The Tiebout-Musgrave "layer cake" model proposes that central governments handle stabilization and redistribution while local governments focus on allocation. It is criticized for assuming costless mobility and full knowledge, and for not accounting for external