The last several years saw the rise of Customer relationship management (CRM) as an important business approach. Customer relationship management is a comprehensive business and marketing strategy that integrates technology, process, and people. The paper describes a research methodology, which is specialized at the diagnostics of the level of Slovak companies in the CRM area. For better understanding value of the research medium and large businesses had been addressed. The paper presents all results of question research and is focused to base results, which evaluate a level of Slovak companies in the CRM area