The varying complexity, different maturity and rapid growth of the number of new e-services promote the assessment and their comparison with each other. This paper presents the application of e-service model in assessment and comparison of services in public sector. The model will assist the authorities to evaluate the maturity and complexity of the e-services they provide, and the systems that support these services. It could be helpful in comparing of e-services with other e-services provided by other authorities in the country and/or with other countries. The e-service model is based on the Reference Model for Service Oriented Architecture. A list of evaluation criteria that are based on the model is presented.