Bank deposits play a pivotal role in financial inter mediation process in the financial system of Bangladesh. Bank transform deposit liabilities of assets by making loans and advances. In Bangladesh, like many developing economies, bank deposits remain the predominant source of funding for banks, accounting for about 74.5 percent of bank liabilities in 2019. The growth of banks deposit might associate with a range of supply and demand factors. The demand for deposits expositors supply them. These activities were disrupted during the COVID 19 pandemic period, the very first COVID-19 positive case was detected at the beginning of March 2020. It is observed that overall deposit grew 13.1 percent on average in the last twelve months between July 2020 to June 2021, whereas private sector credit grew 8.6 percent on average for the same period of time. Total deposit stood at BDT 14 20 trillion in FY21 which percent of GDP FY21 up from 3.37 trillion in FY 10 (42.2 percent of GDP).