for ITIN and SSN number

If F-1 file W-7 for ITIN ( reason f: nonresident alien student,professor,or researcher filing US tax return.), does he/she has to file tax return form? The application instruction didn't say so. But could the application be denied?

If one gets ITIN, can he/she get a Social security number later on? It seems you cannot
get them both. How to replace ITIN number?

Thanks again!

所有跟帖： 

• 回复：for ITIN and SSN number -鄂小梨- ♀ (103 bytes) () 03/21/2006 postreply 06:30:18

• F1前五年其间至少要报8843+1040NR, 不管有没有收入. -stp- ♂ (76 bytes) () 03/21/2006 postreply 09:41:09