I was looking for some advice on the best way to file officially as a business. For the past year and a half I have been in school and have been doing carpet cleaning/tile cleaning/installation jobs on the side. Every now and then I will get a check from someone who forgot to put it in my personal name and instead writes it in the business name. I just went to one of those check cashing places since my bank couldn't cash the checks and they wouldn't take them without an EIN number. Just looking for advice on what should I file/register my business as..LLC, Sole proprietorship, S-corp? Should I get business insurance? I am by myself and do not have any employees. 90% of what I collect is cash and usually goes into my personal account. The past year I've made about 10k after expenses with the jobs i have done and have only filed taxes for my other part-time job as a bartender. I thought I could open a business account at my bank but they also need documentation such as articles of incorporation and entity information. Any advice is greatly appreciated.