Value-added tax (VAT) now dominates tax systems around the world. But should every country have a VAT? Is the current VAT always as good as it could be in economic, equity, and administrative terms? In developing and transitional countries the answers to such questions are critical to stability, growth, and development. But can VAT be better designed and better administered? These are the key questions that must be answered in designing and implementing VAT. But different tax designs may better suit different countries facing different circumstances. This book reviews experiences with VATs around the world and assesses how the choice of particular design features may affect outcomes in particular contexts.