Main object of a business of a business plan?

The main object of a business plan can vary from business to business here are some common objectives for creating a business plan;

start up in need of funding - the business plan should be written to convince the banks or investors to grant funding

start up business for business owner - the plan should provide the business owner with a road map to success, including the exact steps he should take to get the business up and running and targets for sales and expansion of the business

existing business for expansion - this plan should be written to provide detailed information about how the business will expand, if they are taking on staff, new premises etc and how it will be funded - if funding is required then the business plan should convince investors of the potential of the business expansion