摘要：This study, investigates the relationship between some banking ratios such as cash to asset ratio, size of bank, capital adequacy and debt to equity with liquidity, operational and credit risks. Financial data was collected from 10 Iranian banks from 2006 to 2011. Regression methods for data analyzing was used and the results shown that capital adequacy had a inverse relationship and debt to equity ratio had an positive relationship with credit risk that there werent any relation between another variables with credit risk. The capital adequacy had a positive relationship with liquidity risk , as well as the cash to asset ratio, sizes of banks and debt to equity ratio had an inverse relationship with liquidity risk .On the other hand, the cash to asset ratio, sizes of banks and capital adequacy had a inverse statistically significant relationship with operational risk. The regression results reports that there werent any relation between the debts to equity ratio and operational risk.
