A joint account is a bank account equally shared by two or more individuals. Parties involved all share the associated rights and liabilities of the account and are regarded by law as co-owners of the account. This means that if anything happens to the account, such as defaults, overdrafts and fraud, all parties are affected. Being a joint account holder is different from being an authorized user. An authorized user has permission to make charges to a card, but is not responsible for payment.