Amazon Kindle Direct Publishing — usually written as KDP — is the self-service platform Amazon operates for independent authors and small publishers. You upload a manuscript and a cover, set a price, pick categories, and within roughly 72 hours your book is for sale in every Amazon storefront on Earth. There is no application, no agent, no gatekeeper, no minimum order quantity. You keep the rights. You keep most of the money.
KDP launched in 2007 alongside the first Kindle e-reader. Amazon initially called the program Digital Text Platform, then renamed it to Kindle Direct Publishing in 2011. Print-on-demand paperbacks arrived in 2017 when Amazon folded its CreateSpace subsidiary into KDP. Hardcovers were added in beta in 2021 and went global in 2023. The platform is owned and operated by Amazon.com Services LLC and is headquartered, like most of Amazon, in Seattle.
The reason KDP matters so much to working authors is sheer market share. Independent estimates put Amazon's share of the U.S. ebook market between 65% and 80%, depending on whose methodology you trust, and KDP is the only direct path onto Kindle. Apple Books, Google Play Books, Kobo, and Barnes & Noble Press together control the remaining slice. If you publish exclusively wide and skip KDP, you have given up roughly three quarters of the English-language ebook market before you have written a sentence.
This page is an encyclopedic reference for the platform. It explains how royalties are calculated with real numbers, what every acronym means, how the 7-keyword and 2-category slots work, when KDP Select is worth its 90-day exclusivity, and how to think about pricing for your specific page count. Every cluster section below links to a deeper article. If you only have five minutes, read section two on royalties — that is where the money is.
1. What Amazon KDP is
Kindle Direct Publishing is a publishing platform, a sales channel, and a print-on-demand fulfillment network rolled into one account. You sign in with the same credentials you use to buy things on Amazon, switch into KDP at kdp.amazon.com, and you are immediately a publisher. The dashboard is called the Bookshelf. From there you can create three product types: a Kindle ebook, a paperback book, and a hardcover book. Each of those is a separate listing, though Amazon links them on the same product page using an internal mechanism the dashboard calls a series or related-book relationship.
An ebook on KDP is stored internally as a Kindle file. Amazon used the old .mobi extension for years, then moved to a format called KF8, then to the current KFX. You never see those formats directly — you upload .epub, .docx, or a Kindle Create package and Amazon converts on its servers. A paperback is printed at one of Amazon's print-on-demand facilities (Kentucky, Nevada, South Carolina, the UK, Germany, Poland, Australia, Japan) within roughly 72 hours of an order. Hardcovers run through the same network with a smaller subset of trim sizes.
What KDP is not: it is not exclusive. The default state of a KDP listing is non-exclusive. You can simultaneously list the same book on Apple Books, Kobo, Google Play, Barnes & Noble Press, and through aggregators like Draft2Digital or IngramSpark. The only time KDP imposes exclusivity is if you enroll the ebook in KDP Select, the optional 90-day Kindle-Unlimited program. Print books are never required to be exclusive.
2. How KDP royalties actually work
Royalty math on KDP looks complicated only because Amazon uses different formulas for ebooks and print books. Once you separate the two, it is straightforward arithmetic. We will walk through both with real numbers.
Ebook royalty: the 35% and 70% bands
Every Kindle ebook earns one of two royalty rates: 35% or 70%. You pick the rate when you set up the book. The 70% band is the obvious choice, but it has conditions. To qualify for 70%, your list price must be between $2.99 and $9.99 in the U.S. (and the equivalent bands in other marketplaces), your file size must influence the math through a delivery fee of $0.15 per megabyte (Amazon's bandwidth charge), and you must allow Amazon to lend the book through the Kindle Owners' Lending Library. Books priced outside the $2.99 to $9.99 range automatically fall to 35% with no delivery fee.
The actual formula is: royalty = (list price − VAT, if applicable − delivery fee) × 0.70 for the 70% band, or list price × 0.35 for the 35% band. A 2 MB ebook priced at $4.99 in the U.S. earns ($4.99 − $0.30) × 0.70 = $3.28 per copy. The same book on the 35% band would earn $4.99 × 0.35 = $1.75. The 70% band wins for almost every fiction title.
Print royalty: the 60% minus print cost formula
Print royalties are calculated very differently. There are no royalty bands. The formula is: royalty = (list price × 60%) − print cost. The 60% is fixed. The print cost depends on page count, ink (black-and-white versus color), and paper type. For a 6×9 inch black-and-white paperback on white paper, Amazon currently charges a fixed $0.85 plus $0.012 per page. A 280-page novel costs Amazon $0.85 + (280 × $0.012) = $4.21 to print. List it at $14.99 and your royalty is ($14.99 × 0.60) − $4.21 = $4.78. List it at $9.99 and you earn only ($9.99 × 0.60) − $4.21 = $1.78. Page count is the silent variable that destroys margins on long books with low prices.
Hardcovers add a flat $7.00 surcharge to the print cost formula for the binding. Color books on premium paper roughly double the per-page rate. Expanded Distribution — selling print books to bookstores and libraries through Amazon's wholesaler partners — pays 40% instead of 60%, and you still pay print cost. Expanded Distribution is rarely worth it for indie authors; IngramSpark gives better wholesale terms.
Kindle Unlimited: pay-per-page-read
If you enroll your ebook in KDP Select, you also earn from Kindle Unlimited and the Kindle Owners' Lending Library. KU does not pay a per-borrow rate. It pays per page actually read, normalized by something Amazon calls Kindle Edition Normalized Pages, or KENP. The KENP rate fluctuates month to month based on the global KU fund divided by total pages read across all KU titles. Historically it has hovered between $0.0040 and $0.0048 per KENP page. A 350-KENP novel read all the way through pays roughly $350 × $0.0044 = $1.54. Multiply by 1,000 reads a month and KU becomes meaningful income for series authors.
3. KDP vs traditional publishing
The honest answer is that the two routes optimize for different things. KDP optimizes for speed, control, and per-unit margin. Traditional publishing optimizes for advance, bookstore distribution, and prestige. Most working indie authors earn more money per book on KDP and more total money once they have backlist of three or more titles.
| Amazon KDP | Traditional | |
|---|---|---|
| Time to publish | 72 hours from finished file | 12 to 24 months after signing |
| Advance | $0 | $1,000 to $50,000 typical for debuts |
| Per-unit royalty (ebook) | 70% of list price | 25% of net (roughly 12% of list) |
| Per-unit royalty (print) | 60% of list minus print cost | 7.5% to 10% of list |
| Rights | You keep everything | Publisher holds rights for the term |
| Bookstore distribution | Online and special order only | Co-op placement in chains |
| Editing and design | You hire or do it yourself | Provided by the publisher |
4. Why authors choose KDP and when they shouldn't
Authors choose KDP because the math works. A traditionally published debut novelist earns roughly $1.25 on a $14.99 hardcover sale. The same author selling that book on KDP as a $14.99 paperback earns $4.78. To match $50,000 of traditional royalties they would need to sell 40,000 copies through the publisher; through KDP they need 10,500. The gap widens with every book in the series because there is no agent commission, no foreign rights split, and the backlist royalty rates do not drop after 18 months.
KDP also wins on iteration speed. You can change a cover at noon and have the new cover live on the product page by 2 p.m. You can pull a 99-cent sale, run a Kindle Countdown Deal, or shift your blurb between Tuesday and Thursday. Traditional publishers run on quarterly meeting cycles. For a working author who lives on review data and ad spend, that velocity is worth more than the advance.
KDP is the wrong choice in three situations. First, if your goal is bookstore placement (signing tours, indie bookshop face-out displays) you need a traditional or hybrid deal — Amazon's Expanded Distribution does not get books on physical shelves at scale. Second, if your book is heavily illustrated full-color art (an art monograph, a coffee-table photography book), KDP's print costs make the unit economics impossible — you want offset printing through IngramSpark or a partner press. Third, if you genuinely need a six-figure advance to live on while you write, KDP cannot front you that money. Everything else: KDP wins.
5. The basics: ISBN, ASIN, file formats, KENP, BISAC
Before going further, learn these eight words. The rest of this page assumes them. Each links to a deeper definition in the glossary.
- ISBN vs ASIN
- ASIN
- BISAC Codes
- EPUB Format
- MOBI Format
- KU Page Reads
- Book Trim Size
- Kindle Create
- ISBN for Self-Published Books
- Print Replica vs Reflowable
6. Royalties and pricing in detail
Pricing on KDP is more lever than spec. Once you understand the bands and the page-count math, you can move levers deliberately to hit a target monthly income. These deep dives cover each lever.
- KDP Royalty Explained
- Ebook Pricing Strategy
- KDP Pricing in 2026
- Paperback vs Hardcover
- Cost to Publish on Amazon
- Self-Publishing Costs
- When KDP Pays Royalties
- Amazon KDP Taxes
- KDP Income Case Study
Plan your royalties
Run real numbers on your specific book before you set the price. Our calculator models 35% and 70% bands, paperback page count, KENP, and KU forecast — all in one screen.
Open the royalty calculator7. The publishing path, step by step
Setting up a KDP account, uploading a manuscript, and going live takes about three hours of focused work if you have your files ready. These guides cover each station of the path.
- What Is Amazon KDP
- How Does Amazon KDP Work
- How to Publish a Book on Amazon
- How to Self-Publish on Amazon
- How to Publish for Free
- Amazon KDP Publishing Guide
- How to Format a Book for KDP
- KDP Cover Calculator Guide
- KDP Cover Mistakes
- Edit a KDP Book After Publishing
- Fix a Rejected KDP Manuscript
- Update a Published KDP Book
- KDP AI Disclosure Policy
- KDP Cover Template Download
8. Marketing and growth on KDP
Once your book is live, KDP's discoverability is driven by three levers: keywords (you get seven slots), categories (you get two of the more than 16,000 BISAC subjects), and ads (Amazon Advertising). Author Central, Series Manager, A+ Content, and Look Inside are the supporting infrastructure. These guides cover each lever.
- KDP Keyword Research Guide
- KDP 7-Keyword Strategy
- KDP Stop Words
- Amazon Book Categories Selection
- KDP Categories Strategy
- KDP Keyword Research Tool
- Niche Finder Tool
- Competition Analyzer
- Trend Spotter
- Profitable KDP Niches
- Amazon Author Central Guide
- Author Central Profile Optimization
- Amazon Ads for Authors Guide
- Amazon Ads for Books (Beginner)
- Amazon A+ Content Tips
- A+ Content Tool
- KDP 30-Day Launch Plan
- How to Get Amazon Book Reviews
- KDP ARC Team Setup
- Amazon Vine for Books
- NetGalley for Authors
- How to Get the Bestseller Tag
- How to Write a Book Blurb
- Book Blurb Generator
- AI Book Description Generator
- How to Write a Book Description
- Book Subtitle Generator
- Amazon Category Finder
- Book Marketing for Self-Published Authors
9. KDP Select vs going wide
KDP Select is Amazon's 90-day exclusivity program. In exchange for not selling the ebook anywhere else for 90 days, you get five Kindle Countdown Deal or free promotion days, Kindle Unlimited royalties, and the All-Stars bonus pool. Going wide means listing on every other store. The right choice depends on your subgenre, your reader base, and your willingness to manage multiple dashboards. These deep dives cover the trade-offs.
- KDP Select Pros and Cons
- Kindle Unlimited Strategy
- Kindle Countdown Deal
- KDP Free Promotion
- KDP vs IngramSpark
- KDP vs Apple Books
- KDP vs Kobo
- Amazon KDP vs Barnes & Noble Press
- Amazon KDP vs Medium
- KDP vs Traditional Publishing
- IngramSpark vs BookBaby
- Google Play Books Publishing
- How to Publish on Audible
- ACX Alternatives
- Findaway Voices vs ACX
- How to Find an Audiobook Narrator
- Audiobook Market for Self-Publishers
- Walmart Self-Publishing
- KDP International Marketplaces
- Amazon KDP in Japan
- Multilingual Book Launch
- Self-Publishing vs Traditional
- Amazon KDP Customer Service
- KDP Discord vs AIWriteBook
10. Tools, calculators, and money math
Pricing, page count, cover bleed, spine width, and series revenue can all be modeled before you publish. These free tools let you run the math without leaving the site.
- KDP Royalty Calculator
- KDP Print Cost Calculator
- Book Spine Width Calculator
- Book Cover Bleed Calculator
- Ebook Conversion Calculator
- Author Income Calculator
- Book Series Revenue Calculator
- Amazon Ads ROAS Calculator
- Paraphrasing Tool
- Book Ideas Generator
- Back Matter Generator
- Copyright Page Generator
- Book Mockup Generator
- Cover Preview Tool
- AI Coloring Book Generator
- AI Low Content Book
- AI Graphic Novel Generator
- AI Ebook Creator
- AIWriteBook for KDP Publishers
- Bookbolt Alternative
- Publisher Rocket Alternative
- Kindlepreneur Alternative
11. Glossary of KDP terms
Acronyms and platform-specific terms that show up across the KDP dashboard, the Help center, and the rest of this page. Each entry links to a full definition.
- Is Amazon KDP Free
- Is Amazon KDP Worth It
- Is Kindle Direct Publishing Worth It
- Sell Books on Amazon Without KDP
- Publish on Amazon and Make Money
- Make Money Self-Publishing
- Tips for Self-Publishing on Amazon
- Passive Income from Books
- AI-Generated Books on Amazon: Legal
- Self-Publishing Success Story
- Kindle Direct Publishing Hub
- KDP Print Quality
- KDP Hardcover Guide
- Format a Children's Book
- Publish a Poetry Book on Amazon
- Publish a Coloring Book on Amazon
- KDP Coloring Book Business
- KDP Coloring Book Niches
- Low Content Book Niches
- Low vs Medium Content
- KDP Cover Software Comparison
- Public Domain Books for KDP
- Writing Under a Pen Name
- Coloring Book Revenue 2026
- KDP Success Rate 2026
- Series vs Standalone Revenue
- KDP Niche Saturation 2026
- Cover A/B Tests 2026
- AI Narration Reception
12. Frequently asked questions
The most common questions about Amazon KDP, answered briefly. Each links to a fuller article.
Yes. There is no upfront cost to publish an ebook, paperback, or hardcover on KDP. You pay nothing to upload, list, or keep your book on sale. Amazon takes its cut on each sale: 30% on ebooks in the 70% band, 40% on ebooks in the 35% band, and 40% plus print cost on print books. You will spend money on editing, cover design, and ads if you want the book to sell, but the KDP platform itself is genuinely $0.
On ebooks, KDP pays 70% of list price (minus a delivery fee of $0.15 per MB) for books priced between $2.99 and $9.99, and 35% outside that range. On paperbacks, KDP pays 60% of list price minus the print cost (roughly $0.85 + $0.012 per page for B&W on white paper). On Kindle Unlimited, KDP pays per page actually read at a rate that has historically been between $0.0040 and $0.0048 per KENP page.
KDP Select is the optional 90-day exclusivity program for Kindle ebooks. If you enroll, the ebook is exclusive to Amazon during the term but you become eligible for Kindle Unlimited royalties, five promotional days (Kindle Countdown Deals or Free Book Promotion), and the All-Stars bonus pool. Print and hardcover versions are never required to be exclusive.
Amazon states up to 72 hours, but most books clear review in 24 to 36 hours. Common reasons for longer review: unusual content (memoirs that read like fiction, public domain material), file errors, or a price that triggers a band review.
No, not for ebooks — Amazon assigns a free ASIN, which acts as the Kindle identifier. For paperbacks and hardcovers, Amazon will assign a free ISBN if you do not provide one, but that ISBN names Amazon as the publisher and cannot be reused on other platforms. If you plan to go wide in print, buy your own ISBNs from Bowker (or your country's equivalent agency).
Yes, with a disclosure step. Since September 2023 Amazon has required authors to declare during upload whether the content is AI-generated, AI-assisted, or fully human. Disclosed AI-assisted books are allowed on the platform. Undisclosed AI-generated content can be removed. AIWriteBook output is allowed under the AI-assisted category.
KDP pays by direct deposit to your bank account 60 days after the end of each sales month. A book sold in March is paid out in late May. The minimum payout threshold is $1 in your home marketplace and $10 in foreign marketplaces (lower in some). You must complete a U.S. tax interview (or your country's equivalent) before payments begin.
KDP pays in U.S. dollars, British pounds, euros, Japanese yen, Indian rupees, Canadian dollars, Australian dollars, Brazilian reais, and Mexican pesos, depending on the marketplace where the sale occurred. Authors with a U.S. bank account receive everything converted to USD. Authors outside the U.S. can receive foreign-currency direct deposits.
Yes — as long as the ebook is not enrolled in KDP Select. KDP itself is non-exclusive by default. You can list the same ebook on Apple Books, Kobo, Google Play, and Barnes & Noble Press at the same time. Print books on KDP are never exclusive regardless of Select status.
KDP is the publishing dashboard where you upload, price, and manage books. Author Central is the author-facing profile dashboard where you write your bio, link social accounts, add headshots, and claim books published through KDP or any other channel. Both are free. Author Central exists in seven country versions (US, UK, DE, FR, IT, ES, JP) and you should claim all of them.
Yes. You can update the manuscript, cover, blurb, keywords, categories, and price at any time. Manuscript or cover changes go through a short review (usually 6 to 12 hours). Existing buyers do not automatically receive the updated file unless you explicitly request Amazon push the new version through the Kindle Customer Service team.
For most indie authors, yes. The royalty math still works, the audience is still there, and the iteration speed (cover swaps, price changes, ad tweaks) is unmatched. The platform is more competitive than it was in 2015 — there are more books and more ads — but the floor is still higher than any other distribution channel. Reasonable expectation for a single non-fiction title with a real launch: $300 to $3,000 in the first 90 days.