Economic strength of any country largely depends on how its financial institutions are operating. In developed countries, all the financial institutions affect almost same in their economy. But a developing country like Bangladesh, Banks are most effective as other financial institutions are not able to hold their sustainability for the long run. As the number of private banks is increasing in Bangladesh, the banking systems have become an integral part in the economic progress of Bangladesh. In Bangladesh, private banks are the direct contributor to the economy. It is known to all that every bank mainly operate for profit making but people and Government are dependent on private banks because of its growing pattern of branches, deposits, loans and advances, earning per share and so on. Banking process are becoming faster, easier, wider that attract people for believing on their work. Private banks of Bangladesh also provide financial support for startup business, providi