Currently, the functionality to close an account on your Trade profile is only available via the Trade mobile app.

1. Sign in to the Trade app on your mobile device
2. Tap the Profile icon on the top left of the screen
3. Choose Accounts from the menu
4. Select the account you wish to close from your list of opened accounts
5. Scroll to the bottom
6. Tap Close this account
   
7. This will bring up a confirmation screen for you to confirm if you'd like to close your account

Note: Your account balance must be at $0 before you are able to close it.