Business plans often vary depending on your target audience, the scope, and the goals for the plan. Startup plans are the most common among the different types of business plans.  A start-up plan is used by a new business to present all the necessary information to help get the business up and running. They are usually used by entrepreneurs who are seeking funding from investors or bank loans. The established company alternative to a start-up plan is a feasibility plan. A feasibility plan is often used by an established company looking for new business opportunities. They are used to show the upsides of creating a new product for a consumer base. Because the audience is usually company people, it requires less company analysis. The third type of business plan is the lean business plan. A lean business plan is a brief, straight-to-the-point breakdown of your ideas and analysis for your business. It does not contain details of your proposal and can be written on one page. Finally, you have the what-if plan. As it implies, a what-if plan is a preparation for the worst-case scenario. You must always be prepared for the possibility of your original plan being rejected. A good what-if plan will serve as a good plan B to the original.