1.To test the feasibility of your idea. 2.To give your business the best possible chance of success. 3.To secure funding,such as,bank loans. 4.To make business planning manageable and effective. 5.To attract investors. 6.To prove that you are serious about your business. 7.To establish business milestones. 8.To better understand your competitors. 9.To understand your customers better and determine the most effective way to reach them,word of mouth,newspapers,magazines,email,SMS,website etc.

10.To test your assumptions. 11.To document your revenue model. 12.To determine your financial needs. 13.To reduce the need of pursueing the wrong opportunity. 14.To force you to research and really understand your market. 15.To entice employees and management team. 16.To plot your course and focus your efforts. 17.To attract partners.

18.To position your brand. 19.To reposition your business to deal with changing conditions. 20.To document your marketing plan. 21.To unveil new business opportunities 22.To identify operational weaknesses and formulate plans to overcome them.