Understanding the nature of national savings behavior is critical in designing policies tornpromote savings and investment which in turn enhance economic growth through capitalrnformation. This paper empirically examines the determinants of savings in private commercialrnbanks of Ethiopia for the 2001-2015 periods. From total of sixteen private Banks which arernengaged in commercial activities, six selected based on the historical time formation of banks.rnThe conceptual framework for this study is originally derived from Life-Cycle model andrnappropriately modified to accommodate the peculiarities of a developing country and builds onrnthe existing cross-country literature on determinant of saving mobilization. The researcherrnadopted Quantitative research approach. Bank specific and macroeconomic variables werernanalyzed by using the balanced panel fixed effect regression model. Different diagnostic testsrn(test for assumption of Homoscedasticity, Autocorrelation, Normality, average value of the errorrnis zero and independent variables are non-stochastic) were conducted to check thernappropriateness of the model. The results reveal that disposable income, real GDP growth,rnbranch expansion, are positively and statistically significant on bank deposit growth; whereas,rnloan to deposit ratio (bankâ€™s liquidity)influence is negatively and statistically significant on bankrndeposit growth. Deposit rate and profitability had insignificant positive influence on bankrndeposit growth. Whereas population growth and capital to loan ratio (capital adequacy) hadrninsignificant negative influence on bank deposit growth. The study implies that stimulation ofrneconomic growth is most important factors that affect bank deposit growth. The researchrnrecommends that private commercial banks should have to intensify branch expansion to areasrnwhere there are potential deposit sources even to remote locations .moreover, privaterncommercial banks required to have enough liquid assets to meet the demand for cash outflowsrnso as to generate and sustain public confidence of the depositors.rnKeywords: Private commercial Banks, Bank deposit, Regression Analysis