A reasonable amount of detailed information on various methods of categorization, collection and measurement of quality costs can be found in the literature (Plunkett and Dale, 1987; Williams et al., 1999; Schiffauerova and Thomson, 2004). However, there are only a few published, practical examples from industry that give specifics about the costs that are included or excluded in quality costing and about how the costs are practically collected and measured. More detailed descriptions of CoQ systems from industry can be found in Whitehall (1986), Hesford and Dale (1991) and Purgslove and Dale (1996). This paper intends to contribute to this area by providing an analysis of the quality costing practices of four successful companies.