Deposit is important in the banking industry . The objective of bank is increase the amount of despot to utilize it in producing credits and meet their financial obligations . The purpose of this research is to determine the factors affecting bank deposits in Tunisia . we used a panel static for a sample of 11 banks in Tunisia for the period ( 2005…2022) . We found that (ROA ; NIM ; Size , capital ; credit ; GDP, inflation) have a positive effect on deposit but (ROE ; operating costs ; asset liquids )have a negative effect on deposits .