Abstract
Banks play an important role in the economic life of countries by encouraging individuals to deposit their savings and then convert them in to productive funds by lending to others. Banking activity is heavily dependent on capital consisting of the total amount of depositors funds , the process of depositing money with the bank is carried out under contract or agreement between the deposited customer and the bank , and accordingly one account is opened to the deposited customer or several , similar or different accounts in the same bank or its multiple branches.These accounts are subject to the principle of independence of bank accounts from each other so that the credit balance of one of these accounts can not guarantee the balance owed in the other account, which has several negative effects that can be avoided through spending between the parties on legal means such as spending on the inclusion of the clearing clause in the contract or the merger of multiple accounts .