Can You Publish a Book Without Buying an ISBN Number?

Thinking about publishing your own book, but unsure if you really need to purchase an ISBN? You’re not alone. Many new authors find themselves wondering if that 13-digit number is truly necessary, especially when self-publishing is now more accessible than ever. While it is possible to release your book without going through the ISBN number purchase process, the choice can impact how widely your book is distributed and how professional it appears.

So, what’s the right path for your publishing journey? Let’s break down the essentials, the exceptions, and the smarter ways to get ISBN numbers for books—so you can decide what works best for your goals.

What Exactly Is an ISBN?

An ISBN (International Standard Book Number) is a unique identifier for books. It helps bookstores, libraries, and online platforms keep track of titles, authors, formats, and editions. Think of it as your book’s fingerprint in the publishing world. Without it, your book may not show up in catalogues or systems that most retailers and libraries use.

Yes, You Can Publish Without One—But Here’s the Catch

Technically, you can publish a book without buying an ISBN. Some online platforms offer free ones, and others (like Amazon’s Kindle Direct Publishing) don’t require it for eBooks. But there are a few catches:

• Limited Distribution – Without an ISBN, many bookstores and libraries won’t stock your book.
• Less Ownership – If a publishing service gives you a free ISBN, they are listed as the publisher, not you.
• Less Professional – A book with no ISBN can appear incomplete or less credible to buyers.

So while skipping the ISBN number purchase can save money upfront, it may limit your reach and brand as an author.

When You Might Not Need an ISBN

There are a few situations where publishing without an ISBN makes sense:

• You’re only creating an eBook on a single platform like Amazon.
• You’re printing a private or limited-run book (e.g., family stories, class projects).
• You’re publishing on platforms that provide their own identifier (but note: this often limits your book to their store).

Still, if you ever plan to expand or sell through multiple outlets, you’ll eventually need to get ISBN numbers for books to be taken seriously.

Why Buying Your Own ISBN Is a Smart Move

Purchasing your own ISBN gives you full control over your book’s metadata—this includes how it’s described, where it’s listed, and who’s shown as the publisher. That’s important if you’re building a brand or planning a series.

Here’s why it pays off:

• Full Ownership – You’re the publisher, not a third-party platform.
• Global Reach – Your book can be sold through various retailers, both online and in-store.
• Professional Look – Distributors see your book as legit and properly formatted.
• Easier Tracking – Sales and listings are easier to manage with a proper ID.

Yes, the cost can vary depending on your country (and it’s not always cheap), but think of it as an investment in your writing career.

Where and How to Get One

In the U.S., ISBNs are issued by Bowker. You can buy a single ISBN or save money by purchasing a block of 10 or more. Here’s a quick guide:

• 1 ISBN = More expensive per unit, good for a single book.
• 10 ISBNs = More affordable long term, great for multiple formats (print, eBook, audio).
• 100 ISBNs = Ideal for indie publishers or authors planning several titles.

Make sure to purchase from the official source to avoid scams or inflated prices from resellers. Once bought, you can assign each ISBN to a specific format and edition of your book.

Final Thoughts on Publishing Without One

Deciding whether to purchase an ISBN depends on your goals. If you’re publishing a quick eBook or sharing with friends, you might skip it. But if you want your book in libraries, stores, or multiple platforms, investing in an ISBN is the way to go. It signals that you’re serious and professional, and it puts you in control.

There’s no one-size-fits-all answer, but now that you understand the role of the ISBN, you can make a smarter decision. Whether you choose a free option or make your own ISBN purchase, the key is to match your publishing plan with your long-term vision.

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