Do I need to be over 18 to open an account? November 02, 2019 11:34 Updated Follow You must be 18 years or over to open a HyperJar account. Related articles Do I have to live in the UK? Is the HyperJar card a credit card? Do I need to have a good credit rating to open a HyperJar account? Why did you ask me for extra documents? How do I get started? Comments 0 comments Please sign in to leave a comment.