a business plan is a form of proposal. if you are serious about starting a business, you will need to write a comprehensive, thoughtful business plan that ensures you have done your homework and know what it takes to launch your business. moreover, business plans are necessary to secure financial support. for instance, when you start your own business, you need financial backing, such as a loan or venture capital supplied by investors. to secure financial backing, your business plan needs to be accurate and persuasive. make sure you spend ample time carefully composing this type of proposal. the executive summary of a business plan should contain