Most people think that businesses have to register a business name. They are not correct. You can always trade using your own name or your company name and it is not necessary to separately register a business name. Of course there are some rules that must be followed if you chose to do this. Firstly you must trade using your full name. In the case of company this means using all of the name of the company and this includes the end part of that name. For example a company called The Groovy Herb Pty Ltd must in all documentation signage etc. include the whole of that name which means writing "Pty Ltd" on everything.