One advantage of the joint account over two individual accounts is lower service charges. In addition, the account has rights of survivorship: for a married couple, this means that if one spouse dies, the surviving spouse, after fulfilling a specified legal requirement, can draw checks on the account. If account owners are treated as tenants in common rather than having rights of survivorship, then the survivor gets only his or her share of the account. Thus, when you’re opening a joint account, be sure to specify the rights you prefer.