Comp titles for a book proposal are the four to seven recently published books you name to prove your book has a proven, buying audience. Pick books published in the last three to five years, in your exact category, that sold well but did not become mega-bestsellers.
In this guide, you will learn:
- How many comp titles to include and how recent they need to be
- How to estimate a book’s sales without BookScan access
- The exact format agents and editors expect in the competitive titles section
- The five comp title mistakes that get proposals rejected on sight
Here is how to build a comp section that helps an editor say yes.
What Are Comp Titles in a Book Proposal?
Comp titles — the published books you name in a proposal to show that readers already buy books like yours, and that yours offers something those books do not.
The abbreviation is deliberately slippery. Some agents say “comparative titles,” some say “competitive titles,” some say “comparable titles.” All three mean the same section of your proposal.
That section exists to answer one question an acquisitions editor has to answer for their finance team: how many copies will this sell? Editors build a profit and loss statement using the sales history of your comps, so the books you name directly shape the advance you are offered.
This is why comps are not a formality. They are the closest thing your proposal has to a revenue forecast.
Why Do Publishers Care About Comp Titles?
Publishers care about comp titles because past sales are the only available proof of future sales. Your book does not exist yet, so the editor substitutes the performance of similar books as a stand-in. Strong comps make the acquisition defensible in the editorial meeting.
Two questions get answered in this section, and both need a yes:
- Is there a market for this book? If books on your topic sell, the category is alive.
- Is there room in that market for yours? If three recent books already say what you plan to say, the editor has no reason to buy a fourth.
Your comp section has to hold both at once. Similar enough to prove demand. Different enough to justify existing.
Get the balance wrong in either direction and the proposal reads as either “nobody wants this” or “somebody already did this.”
How Many Comp Titles Should a Book Proposal Have?
A nonfiction book proposal should include four to seven comp titles. Fewer than four looks like you have not read your category. More than seven turns a persuasive argument into a bibliography that nobody finishes reading.
The split matters more than the number:
| Comp type | How many | What it proves |
|---|---|---|
| Recent bestsellers in your category (last 2-3 years) | 3-4 | The market is active right now |
| Mid-list titles with solid, steady sales | 2-3 | Books like yours sell without a celebrity name attached |
| Adjacent-category or “vibe” comps | 0-1 | Your book has crossover reach |
Note the difference from fiction. A query letter for a novel usually names just two comps — one for genre, one for tone. Nonfiction proposals need the fuller competitive analysis because the book is being bought on the pitch alone, before a single chapter is written.
If you are still assembling the surrounding sections, the nonfiction book proposal template shows where the comp section sits relative to the overview, author bio, and chapter outline.
How Recent Do Comp Titles Need to Be?
Comp titles should be published within the last three to five years, with at least half from the last two. Publishing moves on a short memory. A comp from 2014 tells an editor about a market that no longer exists.
There is one narrow exception. If a book genuinely defined your category and still sells steadily, you can name it as context — but never as your primary comp. Frame it explicitly as the foundation your book builds on, then follow it with recent titles that prove current demand.
A practical test: if the comp came out before the last major shift in your category, drop it. Business books written before remote work went mainstream, health books written before GLP-1 drugs, tech books written before generative AI — all of them date your proposal instantly.
Recency signals something beyond market data. It tells the editor you are actually reading in your field.
How to Find Comp Titles for Your Book
Finding comps is research, not recall. The books you already know are the books everyone knows, which makes them the worst possible comps. Work through these five sources in order.
1. Amazon category bestseller lists
Go to the Amazon category your book will be shelved in — not the broad one, the third or fourth level down. Sort by bestsellers and by newest releases. The titles that appear in both lists are your strongest candidates.
Then use the “Customers also bought” and “Products related to this item” carousels. They surface mid-list books that never crossed your radar but that Amazon’s own data says share a readership with your book.
2. Publishers Marketplace deal announcements
Search deal reports for your category over the last two years. Every announcement names the comps the agent used to sell that book, which effectively gives you a list of comps that already worked on an editor.
3. Independent booksellers and librarians
Ask a bookseller in your category what sells steadily rather than what sold big. They will name books with reliable, quiet appeal — exactly the mid-list titles that make a comp section look researched rather than Googled.
4. The acknowledgments and endnotes of recent books
Authors in your category cite each other. Follow the trail through three or four recent books and you will map the entire conversation your book is joining.
5. Goodreads “readers also enjoyed”
Goodreads recommendations are built on reader behavior rather than purchase data, which surfaces tonal and stylistic matches that Amazon misses.
Keep a running spreadsheet with title, author, publisher, publication date, page count, price, and format. You will need every one of those fields for the proposal itself.
How to Estimate Comp Title Sales Without BookScan
You cannot access BookScan. Subscriptions run into the thousands of dollars and are effectively restricted to publishers, agents, and retailers. Editors will run your comps through it — you have to estimate from public signals instead.
Two proxy methods are widely used:
- Goodreads ratings Ă— 4 to 5. A book with 20,000 ratings has likely sold 80,000 to 100,000 copies. A book with 800 ratings has probably sold 3,000 to 4,000. Use ratings, not written reviews.
- Amazon reviews Ă— 10 to 20. Rougher than the Goodreads method, but useful as a sanity check when the two estimates disagree wildly.
Both are approximations, and worth knowing why. BookScan captures roughly 75% of print sales and Amazon does not report its numbers to it at all — so even the industry standard is working from partial data.
Here is the part most guides skip: do not put your sales estimates in the proposal. Naming a specific number you cannot source makes you look either careless or dishonest to the one person in the room who can check it. Use the estimates privately, to filter which books make your list, then write about the books qualitatively.
The right target range is a book that sold well enough to prove a market — roughly 15,000 to 100,000 copies — without being so large that the comparison reads as fantasy.
What Is the “Goldilocks Zone” for Comp Titles?
The Goldilocks zone for comp titles is a book that sold strongly but not phenomenally, in your exact category, within the last three years. Too big and you look naive. Too small or too obscure and the editor cannot picture the sales.
There is an inverse relationship worth internalizing: the more famous the comp, the less room you have to be different from it. Comping to a household name means claiming you will do the same thing at nearly the same scale, which is a claim almost no debut can support.
Editors have specific allergies here. As one put it, a comp title that nobody in publishing wants to see is Harry Potter — and the nonfiction equivalents are Atomic Habits, Sapiens, and Educated. Naming any of them says you did not research; you recalled.
The books that impress are the ones an editor half-remembers. Solid performers, well-reviewed, clearly in your lane, not in the cultural bloodstream. Naming those proves you read your category rather than the bestseller list.
What Should Each Comp Title Entry Include?
Each comp entry should include the bibliographic details plus a short paragraph that describes the book fairly and then names the specific gap your book fills. Three to four sentences per comp is the standard length.
Format each entry like this:
Title: Subtitle Author Name | Publisher, Year | 288 pages | $28.00 hardcover
[Two sentences describing what the book does and who it reached — written objectively, as the author would recognize it.] [One to two sentences naming what it does not cover, and how your book addresses that.]
The order inside the paragraph matters. Describe the comp generously first, then differentiate. Leading with criticism reads as insecurity, and editors notice.
One more constraint: differentiate on substance, not on quality. “This book is excellent on the science but written for clinicians rather than patients” is a real gap. “This book is poorly written” is an opinion the editor may not share, and possibly about a book their colleague acquired.
What Not to Say in Your Comp Section
These five moves sink otherwise strong proposals.
- “There is no book like mine.” This is the single most damaging sentence in the section. No comparable books means no proven market, which means no reason to invest. Absence of competition is absence of demand.
- Comping only to mega-bestsellers. Naming the biggest book in the category signals that you know one book, not the market.
- Comping to self-published or hybrid titles. Editors need traditionally published sales data. A self-published comp gives them nothing to model, no matter how well it did.
- Trashing the competition. Publishing is small. The editor reading your proposal may have acquired the book you just called shallow.
- Padding with tangential books. A comp that shares a theme but not a readership weakens the whole list. Four precise comps beat seven loose ones.
There is a sixth, quieter mistake: over-explaining. If you need three paragraphs to justify why a comp is relevant, it is usually not the right comp. Strong comps make the connection obvious.
How to Use Comp Titles in a Query Letter vs a Proposal
Comp titles work differently in a query letter than in a proposal. A query letter names two comps in a single sentence. A proposal devotes a full section to four to seven comps, each with bibliographic detail and a differentiation paragraph.
| Query letter | Book proposal | |
|---|---|---|
| Number of comps | 2 (sometimes 3) | 4-7 |
| Space given | One sentence | 1-3 pages |
| Detail level | Title and author only | Full bibliographic entry plus analysis |
| Purpose | Signal category and tone fast | Support the editor’s sales forecast |
| Non-book comps allowed | Yes, sparingly | Rarely |
In a query, the standard structure is one comp that signals the shelf your book sits on and one that signals its tone. Combined, they let an agent picture the reader in about four seconds.
In a proposal, the comps have to survive a spreadsheet. See query letter examples that worked for how the one-line version reads in practice, and how to find a literary agent for nonfiction for who you are aiming that letter at.
Can You Use Movies, Podcasts, or TV Shows as Comps?
You can use non-book comps in a query letter, but use them sparingly and never as a substitute for book comps in a proposal. A film or podcast comp communicates tone efficiently, but it gives an editor no sales data to model against.
The workable pattern in nonfiction is one cultural touchstone paired with book comps: a proposal on workplace burnout might reference a widely discussed documentary to establish cultural momentum, then name four recent books to establish that the audience buys books about it.
Podcast comps have become genuinely useful for platform-driven nonfiction, because audience size is public and verifiable. Just keep them supplementary. The book comps carry the argument.
How to Write the Comp Section Faster
Most authors stall on this section not because the research is hard, but because writing four to seven balanced, non-defensive paragraphs about other people’s books is tedious.
Our Pick — Chapter
Chapter is an AI book writing platform built for full-length nonfiction, and its outlining and drafting tools handle proposal sections including competitive analysis. You give it your topic, category, and the comps you have researched, and it drafts the differentiation paragraphs in a consistent voice — which you then edit into something true.
Best for: Authors who have done the comp research and need the section written without three weeks of throat-clearing Pricing: $97 one-time for the nonfiction platform Why we built it: 10,000+ authors have used Chapter to write books, and the sections they get most stuck on are the business-document parts of a proposal, not the chapters.
Chapter will not do the research for you, and it should not. The value of a comp section comes from you having actually read the category. What it removes is the blank-page tax on turning that research into prose.
If you want the wider proposal workflow, AI for writing book proposals covers where the tools help and where they actively hurt.
Common Mistakes to Avoid
- Choosing comps you have not read. Editors ask about them. A summary lifted from a jacket copy is audible in conversation.
- Ignoring format and price. Comping a $32 hardcover when you are pitching a $17 trade paperback compares two different businesses.
- Using books from a different readership. An academic press title and a general-trade title can share a topic and share no buyers at all.
- Letting the section go stale. If your proposal has been out for a year, refresh the comps before the next round of submissions.
- Forgetting to update after new releases. A book published in your exact space last month is a comp you have to address, not one you can hope nobody noticed.
How Long Should the Comp Titles Section Be?
The comp titles section should run one to three pages in a nonfiction proposal — roughly 400 to 900 words. Each comp gets three to four sentences, preceded by a short paragraph framing the category as a whole.
That framing paragraph does real work. Two or three sentences on where the category stands, whether it is growing, and what readers currently want gives the individual comps a context to sit inside. Without it, the section reads as a list rather than an argument.
Position the section after your market analysis and before your author platform section, following the structure of a full nonfiction proposal.
Do Comp Titles Affect Your Advance?
Comp titles directly affect your advance because editors build the profit and loss statement using comp sales figures. The projected sales number that comes out of that spreadsheet sets the ceiling on what the publisher can offer.
This cuts both ways, which is why comp selection is strategic rather than merely honest. Comping to books that sold 5,000 copies caps your advance at what a 5,000-copy book earns. Comping to books that sold 500,000 makes the P&L unfalsifiable and the editor skeptical.
The productive range sits in the middle: comps that sold well enough to support a real advance, close enough to your book that the editor believes the projection. Everything about your comp section is ultimately a negotiation over that one number.
FAQ
How many comp titles should a book proposal have?
A book proposal should have four to seven comp titles. Include three to four recent bestsellers in your category to prove active demand, plus two to three mid-list titles with steady sales to show that books like yours sell without a celebrity author attached.
How recent do comp titles need to be?
Comp titles need to be published within the last three to five years, with at least half from the last two. Older titles describe a market that has already changed. A category-defining older book can appear as context, but never as your primary comparison.
Can I say there are no comparable titles for my book?
No. Saying there are no comparable titles is the fastest way to sink a proposal. To a publisher, no comparable books means no proven market, which means no reason to invest. Every book has neighbors — if you cannot find yours, widen your category definition.
Should comp titles be bestsellers?
Comp titles should be solid performers, not mega-bestsellers. Books that sold roughly 15,000 to 100,000 copies prove demand without making an implausible claim. Comping to a household name signals that you know one famous book rather than your actual category.
How do I find out how many copies a comp title sold?
You can estimate comp title sales by multiplying Goodreads ratings by four to five, or Amazon reviews by ten to twenty. These are rough proxies since BookScan access is restricted to the industry. Use the estimates to filter your list, but never print an unsourced number in the proposal.
What is the difference between comparative and competitive titles?
There is no meaningful difference. Comparative titles and competitive titles both refer to the same proposal section listing published books similar to yours. Publishers use the terms interchangeably, along with “comparable titles” and the shorthand comps.
Sources and Further Reading
- Writer’s Digest — The Why, What, How of Comp Titles for Your Nonfiction Book Proposal
- Penguin Random House Author News — Comp Titles: An Elevator Pitch for Your Book
- Nathan Bransford — How to Come Up With Good Comp Titles for Your Book
- Manuscript Academy — Comp Titles in Your Query Letter
- Public Books — Where Is All the Book Data?
- Writers and Artists — 4 Tips for Choosing the Right Comparative Titles
- Manuscript Works — How to Come Up With Comparable Works for Your Academic Book Proposal
Once your comps are set, the rest of the proposal has a spine to build around. Start with the free book proposal template, map your content using a nonfiction book outline, and work through the full guide to writing a book proposal before you send anything out.
