Mastering Negotiable Instruments (UCC Articles 3 and 4) and Other Payment Systems explains the essential concepts in the law governing payment systems. The book focuses primarily on the prototypical payment systems that for centuries have used negotiable instruments: notes, checks, and other types of drafts. It explores the rules and mechanisms that regulate transactions in negotiable instruments from issue to collection. Study of the rules starts with UCC Article 3 (governing negotiable instruments generally) and Article 4 (governing check collection), but also requires consideration of federal statutes such as the Expedited Funds Availability Act, the new Check Clearing for the 21st Century Act, and related federal regulations. The book also explores the largely federal law governing newer payment systems that have evolved from negotiable instruments, such as credit cards and debit cards. This book is part of the Carolina Academic Press Mastering Series edited by Russell L.Weaver, University of Louisville School of Law.