Dissertation Submitted in Partial Fulfilment of the Requirements for Award of the Degree of Master of Business Administration (MBA) of the Mzumbe UniversityThis study intended to examine the influence of employee motivation on organisational non-financial performance at Tanzania Revenue Authority, (TRA) Tanga City. The research was carried out at TRA Tanga City Tanzania. The study was guide by specific objectives which were to: identify factors that influence motivation of employees; determine the effect of motivation on service delivery speed; determine the effect of motivation on service quality at TRA Tanga City, and the last one but not least to determine the effect of motivation on productivity at TRA Tanga City. Data were collected through Questionnaires and documentary review. The questionnaires were administered to TRA Staffs and Traders of Tanga City who were customers of TRA Tanga City. Documentary review was used to collect information on service delivery speed. The study used descriptive statistics (frequencies, and percentages) to answer one research question of the study. Spearman Rank Correlation Coefficient was also used to test the remained three hypotheses of this study. From the findings, the researcher concludes that extrinsic motivational factors; salary and job security were the most valued factors by employees at TRA Tanga City. However other factors, intrinsic motivational factors; growth opportunities and recognition were found to be next to above mentioned factors in the ranking order. The study also found that, motivation had significant influence on service quality and productivity at TRA Tanga City; but to the contrary motivation was found to have no significant influence on service delivery speed at TRA Tanga City. The study generally concludes that the management should put enough emphasise on the most valued motivational factors. Applying appropriate motivational factors will lead to the improvement in service quality, productivity and ultimately organisational performance.