Sustainability is "meeting the needs of the present without compromising the ability of future generations to meet their own needs”. The study on internal sustainability of banks is based on survey, descriptive and analytical method of research. The research study comprises the three categories of banks operating in Karnataka and Maharashtra states and located in Mumbai, Pune, Bangalore and Mangalore centers (known as banking hubs) namely, public sector, private sector and foreign banks as sampling units with top level management (n=20), bank managers (n=4) and banks staff (n=40) as sampling units from each sectors to the tune of 192 (20+4+40=64X3) numbers as sample size.
The research study analyses the banking policy, culture, philosophy, programmes, vision, mission, goals and objectives of sample public sector, private sector and foreign banks. For the analysis causal relationship between independent and dependent variables have been appropriately aligned. For the measurement of sustainability, scaling techniques and statistical tools and techniques such as averages, percentages, standard deviation, factor analysis, t-test, chi-square test, cross correlation, multiple regressions and Cronbach’s alpha, have been used. To make the data presentable in a meaningful way, wherever necessary tables, charts, diagrams, graphs have been made use of. The qualitative data under the study have been quantified by using Likert’s scale.