It becomes easy to communicate your ideas to the people you interface with, who in turn can give you better ideas or complement the ones you have. Collect all the material to one place. Having a business plan makes it possible to have all your ideas and plans in one place. It becomes easier for you refer to it and to use it to develop your business. You become a more committed business person and even others people, like your prospective financiers, can easily regard you as a serious business person.
If you're one of the many people thinking about starting a small business, having a business plan is one of the first things you should have on your list of things to do. It doesn't matter if you're starting a small business from home or away, having a plan for your business is considered a blue print for a successful small business. What is a business plan and why do you need one?