Hello, I have a couple of things going through my head. #1. I moved recently, and my old address is on my EIN. I think it takes about 2 months to update. Should I fill out my W-9(for my client) with my old address that is on the EIN file, or the new, current address? #2. I am an LLC company(sole proprietor). And for the last 2 years I've been filing with my wife(together). Should I be filing separately?