The present investigation was conducted in Jammu district of Jammu and Kashmir state during the year 2008. Two blocks were selected from Jammu district having the highest area under mango fruit. Cobb-Douglus function was used to study the relationship between output and various inputs. Coefficient of variation was calculated in order to analyze the instability in cropped area, yield and net returns. The study on per hectare costs of mango indicated that on an average the cost A, cost B and cost C were Rs. 1523.95, Rs. 4456.20 and Rs. 12910.80, respectively. The benefit cost ratio with respect to cost A was 9.31, 3.28 with respect to cost B and 1.10 with respect to cost C. Human labour was significant and underutilized in mango in all groups except in 20-24`h year group where it was non significant and over utilized. Manures + fertilizers, plant protection and pruning and training over utilized in 10-14`h year group while as in other groups these inputs were under utilized in all groups except pruning + training in the overall group where it was over utilized. The pruning + training were over utilized upto 14`h year and from 15'h year onwards it was underutilized. The instability was found higher in case of area as compared to yield and net returns.