Can I use ITR-U if I never filed that year at all?
Yes. The updated return is aimed at two situations, and that is one of them: filers who missed both the original and the revised deadlines, and filers who now need to report income they left out. A year with nothing filed falls in the first group, so the absence of an earlier return is not a bar. What does decide the matter is the window. The route is open only for a limited period after the year in question, and once that has passed the updated return is no longer available for it. So the first thing to establish is which of your unfiled years can still be reached.
Can I claim a refund on an updated return?
No. Certain outcomes sit outside what an updated return may do, and a refund is one of them, as is a correction whose effect is to reduce a liability already declared. This catches people who have found over-withholding or a missed deduction and assume the updated return is the way to recover it. It is not that instrument. If your correction runs in that direction, the updated return will not deliver it, and filing one does not preserve the claim, so the question to settle first is whether any other route is open on your facts.
I forgot to report foreign interest income, so is ITR-U the fix?
It is the usual one, if the year is still inside the window. Omitted income is the second of the two situations the updated return exists for, and interest credited abroad is a common example, because it appears on no Indian statement the filer sees. Before filing, gather the statements for the whole period rather than the one account you have remembered, because a second updated return for the same year is not a comfortable position to be in. Expect the filing to carry more tax than a timely return would have: it is a paid route, with additional tax on top of the tax and interest.
Is an updated return the same as a revised return?
No, and the difference is when each is available. A revised return corrects a return you have already filed, inside its own deadline. The updated return is what remains after the original and revised deadlines have both gone, which is why it carries a cost the revised return does not. Describing it as a free correction is the mistake to avoid: additional tax applies, and some outcomes, such as reducing a declared liability or producing a refund, are outside what it can do at all. If the revised deadline has not passed on your year, that is the better instrument.
Does filing ITR-U stop the department from asking questions?
It is a voluntary route, not immunity. Filing puts the income and your own account of it on the record, which is a materially better starting point than being asked about it, and it is the outcome we aim for where the window is still open. But the filing does not by itself decide what happens next, and it does not undo the original default. Anyone telling you that it closes the year is overstating what the instrument does. What can be influenced is the quality of what goes in: the right years, in the right order, with the computation supported by documents.
My Indian income was small, so do I still have to file?
The obligation is decided by the facts of the year rather than by the tax that turns out to be payable, so a small amount, or none, does not on its own remove it. The practical point is different. An updated return cannot produce a refund or reduce a liability already declared, so on a small omission the question becomes what the filing is for: putting the year on the record, which is often the real purpose, particularly for someone who will need a filed history later. Decide that before anything is prepared.
What are Form 15CA and Form 15CB?
They are the certification pair required before certain remittances leave India. Form 15CA is the remitter's declaration filed online; Form 15CB is the accountant's certificate supporting the tax treatment and the rate applied, including any treaty relief. Which combination you need depends on the nature and size of the payment, and banks will generally not process the remittance without them. See Form 15CA.
Can an NRI claim back TDS deducted on Indian income?
Yes, by filing an Indian return for the year. Withholding on rent, interest, dividends, professional fees or a property sale is an advance payment, not a final tax, so where the actual liability is lower — because of the treaty, because of the basic exemption, or because the deduction was computed on gross proceeds rather than gain — the excess comes back as a refund. It needs your PAN, a validated Indian bank account and the deductor's statement filed. See Indian filing and credit claims.