Write your plan using language that your audience will understand. Accommodate your investors, and keep explanations of your product simple and direct, using terms that everyone can understand. You can always use the appendix of your plan to provide the full specs if needed.
Investors and loan providers need to know that you have a solid understanding of the trajectory of your business. You need to prove that there is an attainable and sustainable need for your solution, that you have a strong business strategy, and that your business can be financially stable.
If you are writing a business plan to get a bank loan or because you`re asking angel investors or venture capitalists for funding, you must include the details of what you need in the executive summary.
The executive summary of your business plan introduces your company, explains what you do, and lays out what you`re looking for from your readers. Structurally, it is the first chapter of your business plan. And while it`s the first thing that people will read, I generally advise that you write it last.
People who read your business plan will already know a little bit about your business because they read your executive summary. But this chapter is still hugely important because it`s where you expand on your initial overview, providing more details and answering additional questions that you won`t cover in the executive summary.
The business plan is a necessary but not sufficient condition for finding outside investors. The plan describes the business and what it might become, and that`s all. A beautifully written, edited, and formatted business plan will not make a less investible business more investible.