How old do I need to be to open an account? February 24, 2021 19:27 Updated Follow You need to be 16+ to open a HyperJar account. Related articles Do I need to have a good credit rating to open a HyperJar account? Do I have to live in the UK? Is the HyperJar card a credit card? Why should I use HyperJar? How do I get started? Comments 0 comments Please sign in to leave a comment.