Abstract
Determinants of bank performance can be split between those that are internal and those that are external. Internal determinants are also sometimes called microeconomic determinants or inherent performance, while external determinants are variables that reflect economic and legal environment in which the bank operates. This paper investigates the determinants of banks performance in the Tunisian banking. In attempts to identify the determinants in order to provide practical guides for improved profitability performance. In view of our results, size, control and credit quality are the important variables can determine the performance of bank.