I searched around, however, my case is a little bit different. My wife and I married last year, so I decided to file a joint tax return. But she does not have ssn/itin and she is not in US right now. She'll be back in May this year, which surpasses the April 15th. So I couldn't help her apply for an ITIN by then. From my limited knowledge of google, that there're 2 approaches:
1. File my own tax return first, then after she came back, apply for ITIN and amend my previous tax return.
2. Extend my current tax return, then wait for her come back and apply for ITIN & file tax return together.
Which one works for me? Appreciate your help!
