For a new email to log on to the site, you must send an email to with the email address associated with your taxpayer number (NIF), according to the Tax Authority (AT).

"'I don't remember my access password and I don't know the answer to the security question I chose'. What do I do? You must send an email, using the same email address that is associated with your taxpayer number, to:", says AT, in a post shared on Facebook.