A joint account is an account that you share with one or more people. The money in the joint account is legally owned by the people listed as the account holders. To open a joint account, you may be able to apply online with some providers or if not, you will be able to apply in a branch. If you can only open a new joint account in a branch with your chosen new provider, you should make an appointment now so that your appointment time is secured. All parties to the account will need to provide documentation that proves their identity and address. Your new provider will give you more details about the criteria that apply if you are applying for a joint account and how you can open it.