Business plans may target changes in perception and branding by the customer, client, taxpayer, or larger community. When the existing business is to assume a major change or when planning a new venture, a 3 to 5 year business plan is required, since investors will look for their investment return in that timeframe.
Make it clear and concise; include only the most important elements, keeping it at a maximum of half a page. To create the summary go back over your plan, pick three or four key messages and write a brief overview, then conclude with details of the action you want the reader to take.
A business plan is a blueprint for how your business will run and reveals what future direction your business will take. Understandably you will want to be careful who you show your plan to and avoid your competition seeing it.
Set yourself a reminder to review your business plan regularly. If you have a team in your business, holding brainstorming sessions is a good way to benefit from their knowledge - it ensures you are all on the same page and that you get their support.