Abstract: A computer-implemented method of processing data for evaluating service providers is disclosed. The method comprises providing a qualitative rating scale for each of a number of service actions performed by the service providers; receiving data from a user in the form of subjective scores on the rating scale for each service action and for each service provider; processing the data to compare ratings scores for service actions of a specific service provider with ratings scores of other service providers for those service actions; and collating the ratings score comparisons to provide an evaluation of the specific service provider's comparative performance. In preferred examples, the method is implemented in the form of web-based software. Aspects of the invention are applicable, for example, to the assessment of equity brokers by traders using their services, and to similar business relationships.