Instantly draft and send a business proposal template to establish the terms and conditions between your business and clients. For any competitive proposal, send the following four items to your Pre-Award Research Administrator at least 5 business days before the sponsor deadline:.In this article, we discuss how to write a business proposal letter and we offer sample letters and templates you can use as a guide. I am looking forward to having you join our team! You can pick the proposal template for services you like, fill it in, and customize it to ensure the main selling points of your proposal pop. Simple! Here are a few example proposal letters to inspire you as you create your own. In this article, we discuss how to write a business proposal letter and we offer sample letters and templates you can use as a guide. Grab a Proposal Example in DOC, PDF, or Other Format. You Can Create Professional Proposal Documents in a Few Easy Steps. Complete the Grant Match section of the application. 12.