Alright guys, I have nearly acquired nearly EVERYTHING needed for the final interview in Guangzhou!! The co-sponsorship i-864 from my relative came in the mail last week (took a month!) along with the photocopies of the last year's most recent tax forms, etc.... The only thing I need to complete now is get my taxes in order. I need to back-file. I've been in China for 6 years and never made enough money to merit filing... I was a student here for 5 years, did some part time jobs (from teaching centers, which sent me pay stubs, and deducted tax) but also I never made more than 50K RMB per year. Anyway, which forms are relevant to my filing needs? I need some very generic advice here, and possibly some additional pointers if you are familiar with those forms and feel like there's possible points of confusion I'd run into... For those past years I'd need to file single, and for this past year I'd need to do a married but separate file (since we're married but my wife has a job in China, not america, doesn't even have an SSN?)