The majority of organizations realize that training must be a worthwhile effort; there must be returns towards labor productivity after training. Evaluation is possibly the least developed aspect of the training cycle. The principal objective of this research study is to identify the practices and challenges of training impact assessment in Commercial Bank of Ethiopia. For this study, sample survey research method has been chosen where the questionnaire was used to collect the information. The research approach applied for this study was quantitative and qualitative approach in nature, the data that were collected using primary data sources were analyzed and summarized by using tables, mean and standard deviation and analyzed using descriptive statistics for the general information and employeesâ€™ perception; and interview report was summarized. The major finding of the study shows since behavioral and result evaluation models would provide training managers with the idea of what is training evaluation on a systematic approach however the aspect of training measurement method was not well explored or detailed. And also these models have not reached a stage of clarity for in-depth training evaluation to be carried out. Based on the conclusion made, recommendation for Commercial bank Ethiopia is proposed to make possible effort in exploring systematic approach and detailed method for behavioral and result training evaluation models to make clarity for in-depth training evaluation to be carried out. And also the organization has to develop the capability of the existing experts which are equipped in conducting TIA.