Each account is one taxpayer: one NIF, yours.
At least 10 characters. Three unrelated words — horse staple battery — are easier to remember and harder to guess than a word with symbols in it.
Type it a second time. A password field shows nothing, so this is the only way to catch a typo before it locks you out.
These details identify the invoice issuer to AEAT. The NIF cannot be changed once the first invoice has been issued.
I already have an account