Non-fiction books are sold on proposal — not on finished manuscripts. This is one of the most fundamental differences between fiction and non-fiction publishing, and it changes the entire relationship between writer and publisher.
A book proposal is a business document that makes the case for your book's commercial viability. It answers three questions an editor needs to say yes: Is this a compelling idea with real readers? Is this author the right person to write it? Can they actually deliver?
Who Needs a Proposal
Virtually all non-fiction sold to traditional publishers — including narrative non-fiction, memoir, self-help, business, health, food, travel, and most prescriptive categories — requires a proposal before a deal is offered. Editors commit to acquiring the book based on the proposal, then the author writes it (or finishes it).
Memoir is a partial exception: literary memoirs with exceptional prose sometimes sell on a complete or near-complete manuscript rather than a proposal. If you're writing a memoir and your prose is the primary selling point, it may be worth completing the manuscript first and then deciding whether to write a full proposal or let the manuscript speak for itself. Talk to agents in your category about their preferences.
Illustrated books, practical how-to books, cookbooks, and most non-fiction categories need proposals. Fiction does not — fiction agents want complete manuscripts.
The Standard Proposal Structure
Most successful proposals run 30–50 pages and include the following sections, in roughly this order:
1. The Hook / Overview (2–3 paragraphs)
This is the most important section of your proposal. An agent or editor may read only these paragraphs before deciding whether to continue. The overview should open with a clear, compelling statement of what the book is and why it matters right now. Not a summary — a pitch. Think of it as the back-cover copy for a book that doesn't yet exist.
The best hooks answer immediately: What problem does this book solve? What experience does it deliver? Why is this the right book for this moment? They're written in the same voice as the book itself, giving agents a preview of your prose sensibility even in this utilitarian document.
After the hook paragraph, the overview typically includes: a brief description of the book's scope and argument, the target reader, and why you are the right author. Then it moves into the body of the proposal.
2. Market Analysis
This section demonstrates that you understand your book's commercial context. It includes:
- Target reader: Who specifically will buy this book? Be concrete — not "everyone interested in productivity" but "managers and team leaders at mid-size companies who want frameworks for remote team communication." The more specific, the more credible.
- Market size: Data on the size of the potential readership. Cite relevant statistics where possible — industry reports, survey data, size of comparable audiences. Don't just assert "this is a large market."
- Comparable titles: 4–6 recently published books in the same space, with brief analysis of each. For each comp, note what it covers, how it's positioned, and how your book differs. The analysis should demonstrate that you've read and thought about these books — not just listed them.
3. About the Author
For non-fiction, author credentials matter more than in fiction. This section covers your platform (social media following, newsletter list, podcast audience, speaking profile), your professional credentials (relevant expertise, academic position, practice, media presence), and any personal experience that makes you the right person to write this book.
Platform is not just the size of your audience — it's evidence that you can reach the people who will buy this book. An agent considering a business book will look at your LinkedIn following, whether you speak at industry conferences, and whether you have corporate clients. An agent considering a wellness book will look at your Instagram following and whether you've been featured in relevant media.
If your platform is modest, be honest about what you're actively building rather than inflating what you have. Agents check.
4. Chapter-by-Chapter Outline
This section gives a detailed description of each chapter — typically 100–200 words per chapter. Each description should convey what the chapter covers, the key argument or content, and how it advances the book's overall arc. This is not a table of contents — it's a substantive account of what each chapter actually does.
Strong chapter outlines demonstrate that you've thought through the book at the level of execution, not just concept. An editor reading the outline should be able to see the book's structure and feel confident that you know how to build it.
5. Sample Chapters
Typically 2–3 complete, polished chapters — usually the introduction and one or two body chapters. These are the proof of concept: they demonstrate that you can actually write the book at the level the proposal promises. The sample chapters should be edited to the same standard you'd expect in a finished book.
Some agents will ask to see specific chapters — often the introduction plus a chapter that's representative of the book's main approach. If you have discretion in choosing, select your strongest material.
What Agents Look at First
When an agent opens a proposal, they typically read the hook paragraph, then skip to the "About the Author" section, then go back to the market analysis. If all three pass initial scrutiny, they'll read the sample chapters. The chapter outline is often the last thing they look at closely.
This means: the hook paragraph and your platform section carry disproportionate weight. An uncompelling hook or a thin platform will end the read before the agent reaches your strongest material.
Common Proposal Mistakes
- No platform: For prescriptive non-fiction, an author with no platform asking for a six-figure advance is rarely viable. Build your platform before you query — or be realistic about what kind of deal your platform can command.
- No real market research: Listing comps you haven't read, or citing market statistics without sources, signals that you haven't done the work.
- Weak hook paragraph: The most common failure. If the opening of your proposal doesn't immediately make the case for why this book exists and why you should write it, no amount of supporting material will save it.
- Proposal too short: A 10-page proposal suggests you haven't thought through the book deeply enough to write it.
- Proposal too long: Proposals over 60–70 pages often bury the compelling material in unnecessary padding.
How Long Should a Proposal Be?
The standard range is 30–50 pages, not including sample chapters. With two complete sample chapters (typically 5,000–8,000 words each), total proposal length often runs 60–80 pages. This is normal and expected.
Some categories have different conventions: cookbook proposals are heavy on visual representation, proposal pages can vary significantly with the inclusion of spreads and photography direction. Children's book proposals are much shorter. Ask agents in your specific category what they expect before you draft.
Your sample chapters need to be in their best possible shape before they go out with the proposal. EditRoast can provide editorial feedback on your sample chapters to ensure they're performing at the level your proposal promises.