When you're logged in, click on your account, select 'My details' in the menu on the left, and then 'Tax details'.
You'll then be able to amend your tax details and your Tax identification Number. Just enter the new information and press 'Add new'.
When you're logged in, click on your account, select 'My details' in the menu on the left, and then 'Tax details'.
You'll then be able to amend your tax details and your Tax identification Number. Just enter the new information and press 'Add new'.