This paper presents comparative review of existent (inter-)national approaches to e-government projects evaluation with the stress on intangible/hidden costs and public value dimension which are the two components usually missed out in traditional investments evaluation methods (e.g., net present value, cost/benefit analysis, return on investment). Based on the literature review and weaknesses identified through comparative review, the authors developed models for ex-ante and ex-post evaluation of e-government projects for Slovenian public administration. The models were developed together with representatives of Ministry of Public Administration.