Kindle Unlimited costs $11.99 per month in the US, and Amazon Prime members get a separate benefit called Prime Reading at no extra cost

Amazon offers two different subscription paths for Kindle books, and they work in completely different ways. Kindle Unlimited is a standalone subscription that lets you borrow from a rotating library of over a million titles. Prime Reading is included free if you already pay for Amazon Prime ($14.99 monthly or $139 yearly), and it gives you access to a smaller but curated selection of books, magazines, and comics.

The choice between them depends on how much you read and what kinds of books matter to you. If you read several books a month and want access to a huge catalog, Kindle Unlimited makes sense. If you read occasionally or mainly want magazines and a few popular titles, Prime Reading might already be included in something you're paying for anyway.

Key Takeaways

  • Kindle Unlimited costs $11.99 per month and includes over a million titles you can borrow at once, with no due dates.
  • Prime Reading is free with Amazon Prime and offers a smaller selection of books, magazines, and comics that rotate monthly.
  • Kindle Unlimited lets you borrow up to 20 titles at a time, but you can return one early and borrow another immediately.
  • Neither subscription includes newly released bestsellers from major publishers, though some older or self-published titles are available.
  • You can cancel either subscription anytime without penalty, and your access ends immediately when you do.

How Kindle Unlimited works and what's actually in it

When you subscribe to Kindle Unlimited, you can borrow up to 20 books at the same time. There are no due dates — you keep them as long as you want. When you're done reading, you return the book and your slot opens up for another one. This is different from a library, where you have a set checkout period and the book disappears from your device when time runs out.

The catalog includes self-published books, indie titles, and backlist books from traditional publishers. You will not find most new releases from the Big Five publishers (Penguin Random House, Hachette, HarperCollins, Simon & Schuster, and Macmillan) because those publishers don't put their newest books into the subscription. Some older titles from those publishers are available, but the bulk of Kindle Unlimited is self-published work and smaller presses.

The selection changes constantly because publishers can pull titles in and out. If you find a book you love and want to keep it permanently, you can buy it separately — the Kindle version usually costs between $2.99 and $9.99, though prices vary.

Prime Reading and what comes with Amazon Prime

If you already subscribe to Amazon Prime for shipping and video, Prime Reading is included at no extra cost. The selection is much smaller than Kindle Unlimited — usually a few hundred titles rather than a million — but Amazon curates it to include popular books, magazines like Wired and The Atlantic, comics, and graphic novels. The selection rotates, so new titles appear and others disappear each month.

Prime Reading works the same way as Kindle Unlimited: you borrow books, keep them as long as you want, and return them when you're done. You can have up to 20 titles borrowed at once, just like Kindle Unlimited. The main difference is the size and curation of the library.

Amazon Prime itself costs $14.99 per month or $139 per year. If you use Prime for shipping alone, the reading benefit is essentially free. If you don't use Prime for anything else, paying $139 yearly just for Prime Reading works out to about $11.58 per month — slightly cheaper than Kindle Unlimited, but with a much smaller book selection.

Comparing the two: which one makes sense for you

Choose Kindle Unlimited if you read multiple books per month and want access to a huge variety of titles, especially self-published and indie books. It's also the better choice if you like romance, science fiction, fantasy, or mystery — genres where self-published authors are prolific. The $11.99 monthly cost breaks even if you read just two or three books that would otherwise cost $5 to $10 each.

Choose Prime Reading if you read fewer than two books per month, you're already paying for Prime, or you want a curated selection rather than browsing through thousands of options. Prime Reading also includes magazines and comics, which Kindle Unlimited does not. If you're on the fence, remember that you can try Kindle Unlimited free for 30 days, and you can cancel Prime Reading anytime without penalty.

If you use a library card, check whether your library offers digital lending through apps like Libby or OverDrive. Many libraries let you borrow ebooks and audiobooks free, with no subscription cost — the selection is smaller than Kindle Unlimited but includes new releases that Kindle Unlimited doesn't have.

How to check what's available before you subscribe

You don't need to subscribe to see what's in either library. On Amazon's website or in the Kindle app, you can search for books and filter by "Kindle Unlimited" or "Prime Reading" to see what's available. This takes about five minutes and tells you whether the books you actually want to read are there.

If you're researching a specific author or genre, search for a few titles you know you'd want to read. If most of them show up in Kindle Unlimited, the subscription is probably worth it for you. If you find that new releases and bestsellers you want aren't there, you might be better off buying individual books or using your library.

Canceling and what happens to your books

You can cancel Kindle Unlimited or Prime Reading anytime through your Amazon account settings. For Kindle Unlimited, go to "Manage Your Kindle Unlimited" and select "Cancel Subscription." For Prime Reading, cancel your Prime membership itself (or downgrade to Prime Video only, which costs $14.99 monthly and does not include Prime Reading).

When you cancel, your access ends immediately. Any borrowed books disappear from your device, but you can re-subscribe later and borrow them again. If you buy a book instead of borrowing it, you keep it permanently even after you cancel the subscription.

Frequently Asked Questions

Can I use Kindle Unlimited on my phone or tablet?

Yes. Download the free Kindle app on iOS, Android, or any device, and you can borrow and read Kindle Unlimited books the same way you do on a Kindle device. You can also read in a web browser at read.amazon.com without downloading anything.

Do I have to own a Kindle device to use these subscriptions?

No. You can read on any device — phone, tablet, computer, or Kindle device. The Kindle app is free and works on almost everything. You only need an Amazon account.

What happens if I return a book before I finish reading it?

You can return a borrowed book anytime and immediately borrow another one. Your reading progress is saved, so if you borrow the same book again later, you can pick up where you left off.

Are there any hidden fees or automatic renewals I should know about?

No. Kindle Unlimited renews monthly at $11.99 unless you cancel, and Prime Reading renews with your Prime membership. Both let you cancel anytime, and the cancellation takes effect immediately with no refund for the current month.

Can I share my Kindle Unlimited subscription with family members?

Not directly. Each person needs their own subscription. However, if you share an Amazon household account, family members can access books you've purchased, but not books you've borrowed through Kindle Unlimited.