This work presents a model for the evaluation and selection of Enterprise Resource Planning (ERP) systems. Although these systems are used more and more there have been reports of different kind of problems, underlining the need of having models for their evaluation. Evaluation also permits the possibility, for the prospective user, of being able to establish its own requirements and compare different systems to assess which is the one that better adapts to the user’s needs. The model we present here is based on the Logic Score of Preference (LSP) method. An overview of the LSP method is also given.