This book is the outcome of 15 years of research developing dynamic microsimulation models (DMMs) and using them for analysis. It describes some of the issues in developing a dynamic microsimulation model with applicability for multiple purposes. It outlines a number of methods for dealing with some of the difficult issues in building these models and has a range of applications using different versions of model. The book is aimed at both practitioners and students in the fields of microsimulation and tax and social policy analysis.