See our general guidelines for advice on putting together a successful proposal. A business proposal template standardizes the format and structure of proposals, enhancing clarity and organization.In this comprehensive guide, we'll cover everything you need to know about writing an effective proposal in 2023. A consulting proposal is a document that outlines everything that you, as a consultant, would deliver for a potential project or client. Common Agreement Templates. Learn how to write a business proposal in simple 10 steps. Based on our research and analysis of over 1.8 million proposals.