All teams should have a business plan. Your business plan will help define your team and what the team goals are. These plans will help drive your fundraising and will help potential sponsors.
FRC requires a "business plan" to be given to the judges in the pits if your team wants to compete for the Entrepreneurship Award.
Start here for the FRC definition of what should be in this submission:
http://www.usfirst.org/uploadedFiles...ip%20Award.pdf
Some good examples in the Mentor Resources Library here:
http://www.usfirst.org/roboticsprogr....aspx?id=14042
(NOTE: link to Entrepreneurship award is for last year. Use link above).
(NOTE: link to 234 business plan doesn't work. But this one should:
http://www.chiefdelphi.com/media/papers/2244