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. Cover letter – This letter should introduce the proposal and include the specific request amount.Written answer format: Choose one of your questions, to seek an answer to write up and hand in the following week. Instantly draft and send a business proposal template to establish the terms and conditions between your business and clients. Organized, paginated, table of contents. Organized, paginated, table of contents. Proposal Checklist - These items should be considered in the preparation and review of proposals. The applicant must use this section to present his or her argument as to why the project should be funded. Explain your proposed approach and how it will effectively address the identified problem or opportunity. PreAward Support Services is responsible for the review, routing and submission of externally funded proposals for Texas State University.