The first one. I file a 1040NR every year using my SSN.Would they file under their SSN (supposed to be only for USCs)? Or would they be required to obtain an ITIN?
Actually, the 1040 isn't reserved for USCs, but rather for "US Persons" (which includes Green Card holders and US residents subject to income taxes). The SSN is for USCs and those working in the US.Thanks Bev.
I realized later - it's the 1040 that's reserved for USCs, not the SSN. Senior moment.
Not for renunciants, at any rate. That's the restriction I absentmindedly and incorrectly transferred to SSNs.Actually, the 1040 isn't reserved for USCs, but rather for "US Persons" (which includes Green Card holders and US residents subject to income taxes).
ITINs and SSNs are distinguishable. ITINs start with a '9', SSNs never do. A USC should never hold an ITIN, so if a foreign bank encounters one it can be pretty sure the customer is not reportable. That's your first case covered.I was thinking it would be useful if there was a type of number USCs couldn't have, or a type of number only USCs/USPs could have (so it would be obvious to a bank that a customer was not reportable, therefore not risky).
That's not what happens, for Model 1 countries. The bank holds the self-certifications and gets periodically audited. On the self-certification forms I've seen, TINs are required at onboarding (and for pre-existing accounts, at review) for each jurisdiction of tax-residence "if available", i.e. if it's a jurisdiction which uses TINs.In any case, I doubt non-US banks are at all interested in working to make this type of subtle distinction. Far easier to just send the whole lot to the IRS and let them try to sort the wheat from the chaff.