Opening a joint account
You can open a joint account in the Monzo app:
Tap the Home icon in the menu bar
Tap the ‘plus’ icon in the top right of the screen
Tap Apply for a Joint Account
If you have your account co-owner's details saved in your contacts, and that you have Payments with Friends switched on in your app settings – you'll be able to select your co-owner from the list.
Alternatively, you can tap on the invite someone which generate a unique link you can send the other party. It's important to note that for security purposes, this link expires in 24 hours. You'll need to send it again if this time limit elapses.