A business plan is basically a carefully prepared document in which whatever is going to be done in the company that one is starting, is written down. You have to list every little detail about what you are planning to do. It will include the type of business you are planning to set up, how much money is going to be required for it, how that money will be sourced, who that money will be sourced from, how the sourced money will be spent, what prospects could the business have in the future & many more. All those things have to be carefully written down in your business plan. The business plan has to be prepared in such a manner which will give a clear idea to people about the nature & future of the business. A business plan has to be made irrespective of whether the business is a small or a large one. It is the very first step towards establishing a business organization.