Payment systems are hugely important in any economy including the man on the street. They drive banking, financial sector, markets and the economy in general and their instability leads to systemic risk thus disrupting the normal flow of payments for goods and services. Payment systems are not well understood despite their importance. Not many books have been written on payment systems resulting in limited understanding of this very important field of banking. This book has 11 chapters and is written in a non-technical manner so that even a non-practitioner who would like to understand the field will find it easier to do so. Consequently, practitioners, employees, employers, regulators, delegated regulators, governments, professional bodies, academic institutions, students, researchers and the general public in any economy will find the book worth reading and rewarding.