Ok, here's my question. I'm a sole proprietorship and I've been told that I need to file taxes quarterly. Well, it's getting close to time to file and I had to let my quasi-accountant go. She was very unprofessional. So, I have no idea what to do for taxes other than file them. (Hope there are no IRS folks on this site. ) So how do I determine: A) How much I need to file? B) Where I send it? C) How to double-check my numbers? Thanks guys, I know these are simple questions for the majority of you but hey, that's why we're here, right?