I'm an American, and I didn't apply for the residency certificate from the IRS. I'm only here for 6 months, taxes aren't high enough to outweigh the cost of the certificate, etc. However, the other day, my mentor teacher asked me about it. Her English is very broken and I don't speak Korean, but she seemed to be implying that there was a way I could still get it. I thought I had to have it in before my first paycheck to have it count, but she wanted me to go through with the process. I have no idea what exactly the process entails, but could anyone offer any insight on this matter?