Amazon KDP is the default place to self-publish a book, and for most authors it should be. It is free, it reaches roughly 68% of the global ebook market, and it pays better on Amazon sales than any competing platform.

It is also a platform with no phone number, an automated enforcement system that terminates accounts without explanation, and a royalty structure that quietly changed twice in eighteen months — once in your favour, once against you.

In this review, you will learn:

  • What KDP actually pays in 2026, after the July royalty ceiling change and the 2025 print cut
  • The account-termination risk that costs authors their entire catalogue and back royalties
  • Where KDP genuinely beats every alternative, including us
  • Who should publish here, who should publish wide, and who should not publish yet at all

Here is the honest assessment.

What Amazon KDP Actually Is

Amazon KDP (Kindle Direct Publishing) — Amazon’s free self-publishing platform, which converts your manuscript into a Kindle ebook and a print-on-demand paperback or hardcover, then lists both on Amazon’s storefronts worldwide.

It is a distribution and manufacturing service, not a writing tool. You arrive with a finished manuscript file and a cover, and KDP turns them into products Amazon sells. It does not help you write, outline, edit, or structure anything.

The scale is the entire proposition. Over 1.4 million self-published titles go through KDP every year, self-published books account for roughly 31% of Amazon’s ebook sales, and Kindle Unlimited has paid out $2.58 billion to self-publishers since 2020.

There is no gatekeeper. You upload, you answer a form, and within 24 to 72 hours your book is on sale. That combination of zero cost and enormous reach is why 87% of self-published authors use Amazon as their primary platform.

What Amazon KDP Does Well

The royalty rate on Amazon sales is genuinely the best available

At the 70% tier, KDP pays more per ebook sale than Apple Books, Kobo, Barnes & Noble, or anything routed through an aggregator like Draft2Digital, which takes its own cut before Amazon takes theirs.

In July 2026, Amazon raised the price ceiling for the 70% tier from $9.99 to $12.99 — the first change since KDP launched in 2007. An ebook priced at $11.99 that earned you $4.20 last year now earns $8.39.

Read that again if you write long fiction or dense nonfiction. That is a near-doubling of per-sale revenue on a price point that was previously financially irrational.

Setup is genuinely free, with no ISBN required

KDP charges nothing to publish. No setup fee, no revision fee, no annual listing fee. You can assign a free Amazon ISBN to a paperback, or publish an ebook with no ISBN at all — see our breakdown of whether you need an ISBN for Kindle.

Compare that to the real cost to self-publish a book elsewhere: an IngramSpark route needs your own ISBN at roughly $125 from Bowker, plus a cover built to an exact spine spec.

Speed from upload to live listing

Most text-only books go live within 24 to 72 hours. You can fix a typo, re-upload, and have the corrected file selling the next morning — for free, indefinitely.

This matters more than it sounds. It means you can launch, read the reviews, revise the weak chapter, and relaunch inside a week. No other publishing route on earth gives you that loop.

The discovery machinery is built in

Amazon is a search engine that happens to sell books. Also-boughts, category rankings, Amazon Ads, A+ Content, Author Central, and Kindle Unlimited borrows all feed each other.

Getting your Amazon keywords and categories right on KDP moves real volume. On Kobo or Apple Books, the equivalent effort moves almost nothing, because the traffic is not there to move.

Kindle Unlimited is a real revenue stream

KDP Select enrolment puts your ebook into Kindle Unlimited, where you are paid per page read from a monthly global fund. KU payouts have grown every year, from $379.8 million in 2020 to $711.3 million in 2025.

For genre fiction with series — romance, thriller, LitRPG, cozy mystery — KU is often the majority of an author’s income, not a supplement. It is a genuine competitive advantage that nobody else offers.

What Amazon KDP Does Not Do Well

Your account can be terminated by a bot, with no appeal that works

This is the most serious risk on the platform and the one least discussed in enthusiastic KDP guides.

Amazon’s terms allow account termination, and much of the enforcement is automated. Authors report receiving termination notices that arrive with no explanation and cite no specific infraction. Termination is not suspension: the account is dissolved, your titles are delisted, and unpaid royalties are frequently forfeited.

The trigger list is broader than most authors realise. Multiple accounts (KDP permits exactly one per person, ever), identity verification failures, copyright complaints that later prove false, formatting flagged as inflating pages-read, and undisclosed AI content all put you at risk.

Trustpilot reviewers describe verification loops where support’s advice was to create a new account with a different email — advice that, if followed, is itself a terms violation. There is no phone line, no named account manager, and no escalation path beyond email.

Mitigate it this way: keep your manuscript files, cover files, and reader email list off Amazon’s servers, disclose AI use honestly, never open a second account, and do not build a business where 100% of revenue depends on one automated system’s opinion of you.

In June 2025, Amazon split print royalties into two tiers. Paperbacks listed at $9.99 and above still earn 60% of list price minus printing cost. Anything at $9.98 or below dropped to 50%.

If you were selling a short paperback at $8.99, your margin fell by roughly 11% of list price overnight. The fix is usually to raise your price above the threshold, which our guide to pricing a paperback walks through.

Expanded Distribution pays badly and delivers little

KDP’s Expanded Distribution routes paperbacks to bookstores and libraries at a 40% royalty instead of 60%, with the same printing cost deducted.

The arithmetic is unkind. A 200-page paperback at $9.99 with a $2.75 print cost earns $3.24 on a direct Amazon sale and $1.25 through Expanded Distribution — a 61% pay cut per copy.

Worse, it routes through Ingram anyway, at a worse discount, and many independent bookstores will not order a title showing Amazon as supplier of record. If bookstore shelf space genuinely matters to you, IngramSpark is the real answer, and our IngramSpark vs KDP comparison covers the split.

Delivery fees eat illustrated books alive

At the 70% tier, Amazon charges a delivery fee of roughly $0.15 per megabyte of file size. A plain text novel is 2–4 MB and loses $0.30–$0.60 per sale, which is annoying but survivable.

A photography book, cookbook, children’s picture book, or heavily illustrated nonfiction title can run 20–50 MB. At that size the delivery fee can exceed the royalty entirely, and the 35% tier — which has no delivery fee — becomes the better option despite the lower headline rate.

Colour print is worse still: at roughly $0.065 per page against $0.012 for black ink, a 200-page premium colour paperback costs around $14 to print before you have earned a cent.

Format range is narrow

KDP prints case laminate hardcovers and standard paperbacks. It does not do dust jackets, custom trim sizes, premium paper stocks, or spiral binding. If your book needs to be a specific physical object, KDP will tell you no, and you will end up at IngramSpark or Lulu regardless.

The AI rules are strict, enforced by machine, and easy to trip

KDP caps standard accounts at three new title submissions per day, introduced specifically to slow mass AI publishing. You must also disclose AI-generated text, images, and translations separately during setup.

Disclosure itself is low-risk and invisible to readers. The account-level danger is misrepresentation: Amazon publishes disclosed AI books routinely, and terminates accounts that lie about them. Enforcement moved from title-level removal to account-wide restriction during 2025. Our guide to KDP’s AI book rules covers the specifics.

How KDP Royalties Actually Work in 2026

Verified against Amazon’s published rates as of August 2026. Print costs vary by page count, ink type, and marketplace.

FormatRoyaltyDeductionsNotes
Ebook $2.99–$12.9970%Delivery fee ~$0.15/MBCeiling raised from $9.99 in July 2026
Ebook $0.99–$2.98 or above $12.9935%NoneNo delivery fee at this tier
Paperback $9.99+60%Printing costAmazon direct sales
Paperback $9.98 or below50%Printing costCut from 60% in June 2025
Hardcover50% / 60%Printing costSame thresholds; no Expanded Distribution
Expanded Distribution40%Printing costPaperback only

One trap worth flagging. The July 2026 ceiling change is opt-in. No existing title was repriced automatically. If you have an ebook sitting at $10.99, it is still earning 35% until you log into Rights & Pricing and change it by hand.

That is free money most authors have not collected. Go do it before you finish this article.

Also note the $9.99 print threshold is marketplace-specific: £7.99 on Amazon.co.uk, CA$13.99 on Amazon.ca. Our book royalties explained guide has the full breakdown, and what self-publishing on Amazon costs covers the spend side.

What Real Users Say

The public sentiment split is consistent, and it is worth stating plainly rather than cherry-picking.

Authors who are selling are largely quiet and satisfied. The platform works, the payments arrive monthly, and the reach is real. You rarely see a five-star KDP review because a functioning distribution pipe does not inspire testimonials.

Authors who have hit a problem are furious, and their complaints cluster tightly around three themes: identity verification failures that block payment, terminations delivered without stated cause, and the total absence of a human to talk to. Trustpilot’s KDP profile skews heavily negative for exactly this reason — it is a complaints channel, not a satisfaction survey.

The fair summary: KDP is excellent infrastructure with no customer service. When it works, it is the best deal in publishing. When it breaks, you are on your own, and the downside is your entire catalogue.

Who Should Publish on Amazon KDP

Use KDP if any of these describe you:

  • You are publishing fiction, especially genre fiction with series potential where Kindle Unlimited drives income
  • Your book is ebook-first and text-heavy, so delivery fees are negligible
  • You want to launch fast, iterate on reader feedback, and revise for free
  • You have no budget for ISBNs, setup fees, or a professional print spec
  • Your readers already shop on Amazon, which for most English-language readers they do
  • You are willing to run Amazon Ads and treat the listing as a product page, not a shrine

For most authors publishing a first book, KDP is the correct choice and this is not a close call. Our guide to using Amazon KDP for self-publishing covers the setup end to end.

Who Should Not Publish on Amazon KDP

Skip it, or at least do not make it your only channel, if:

  • Your book is heavily illustrated. Delivery fees and colour print costs will destroy your margin. Price at the 35% tier or print elsewhere.
  • Bookstore and library sales are the point. Expanded Distribution is not a substitute for a real Ingram listing.
  • You need a dust jacket, unusual trim, or premium stock. KDP cannot manufacture it.
  • You cannot survive losing the account. If a single automated termination would end your business, publish wide and own your reader list.
  • You want to price above $12.99. You drop to 35%, and direct sales or a different platform may pay better.
  • Your book is not finished. This is the most common one, and it deserves its own section.

The Alternative We Built — and Where KDP Beats Us

Our Product — Chapter

Chapter is AI-assisted book writing software that takes you from an idea to a finished, structured manuscript. Over 2,147 authors have used it to produce more than 5,000 books, and it has been covered in USA Today and the New York Times.

Here is the honest part, and it matters more than the pitch.

Amazon KDP beats Chapter completely at everything KDP exists to do, and we are not trying to compete with it. Chapter does not sell books. It has no storefront, no print facility, no payment rails, and no readers.

KDP also beats us on:

  • Reach. Roughly 68% of the global ebook market and over half of US physical book sales. We have none of that, and never will.
  • Manufacturing. KDP prints and ships a physical book to a reader in Ohio within days. Chapter exports a document.
  • Discovery. Also-boughts, category charts, Kindle Unlimited, and an ad platform pointed at people already holding a credit card. Writing software cannot manufacture demand.
  • Money in. KDP pays you monthly. Chapter costs you $97 once and pays you nothing.
  • Price. KDP is free forever. We are not.

So these are not competing products. They are two halves of the same project, and KDP is the half that is already solved.

The reason we built Chapter is that most people researching KDP reviews do not yet have a finished manuscript. They are nine months into a draft, comparing royalty tables as a form of productive procrastination. The royalty difference between 35% and 70% is irrelevant on a book that does not exist.

Chapter handles the structuring, drafting, and revision work that gets a real manuscript out of your head, and exports a clean file you then upload to KDP. Authors who have used it have gone on to earn $13,200 from a single book and $60K in 48 hours — but only because they finished the book first.

Best for: authors who have a book to write, not a book to distribute. Pricing: $97 one-time for nonfiction; fiction priced separately. Why we built it: publishing is a solved problem with a free solution. Finishing the draft is not.

If your manuscript is done and formatted, close this tab and go set up your KDP account. You genuinely do not need us. If it is not, the royalty research can wait.

Is Amazon KDP Still Worth It in 2026?

Amazon KDP is still worth it in 2026 for the large majority of self-published authors. The 70% ceiling rising to $12.99 improved ebook economics materially, setup remains free, and no competitor comes close on reach. The real costs are the 2025 print royalty cut, delivery fees on large files, and platform risk with no support line.

How Long Does It Take to Publish a Book on KDP?

Publishing a book on KDP takes 24 to 72 hours from upload to live listing for a standard text-only title. Image-heavy books with AI disclosure typically take 3 to 7 business days for review. Setup itself takes under an hour once your formatted files and cover are ready.

Should You Enrol in KDP Select?

You should enrol in KDP Select if you write genre fiction in series and want Kindle Unlimited page-read income, which often exceeds sales income in romance and thriller. Skip it if you sell meaningfully on Kobo, Apple Books, or direct, since Select requires 90-day ebook exclusivity. Our KDP Select pros and cons breaks down the trade.

FAQ

Is Amazon KDP free to use?

Yes — Amazon KDP is completely free to use. There is no setup fee, no revision fee, and no annual charge. Amazon takes its cut from each sale instead, and printing costs are deducted from print royalties. A free Amazon ISBN is available for paperbacks.

How much does Amazon KDP pay authors?

Amazon KDP pays 70% of list price on ebooks priced $2.99–$12.99, minus a delivery fee of about $0.15 per megabyte. Print pays 60% at $9.99 and above or 50% below that, minus printing cost. Expanded Distribution pays 40%.

Can Amazon terminate your KDP account?

Yes — Amazon can terminate a KDP account at any time under its terms, often through automated enforcement with no stated reason. Termination delists your titles and can forfeit unpaid royalties. Common triggers include multiple accounts, failed identity verification, and undisclosed AI content.

Is Amazon KDP better than IngramSpark?

Amazon KDP is better than IngramSpark for Amazon sales, speed, and cost — higher royalties, free setup, and no ISBN required. IngramSpark is better for bookstore and library distribution and hardcover formats. Most experienced indie authors use both platforms together.

Do you have to disclose AI-generated content on KDP?

Yes — you must disclose AI-generated text, images, and translations separately during KDP setup. The disclosure is not shown to readers and does not block publication. The account risk is misrepresentation, not AI use: Amazon publishes disclosed AI books and terminates accounts that lie.