An ISBN (International Standard Book Number) is a unique identifier assigned to a book that helps track and identify it in the publishing industry. If you're self-publishing through Kindle Direct Publishing (KDP), you may be wondering if you need an ISBN for your book. Here's what you need to know about ISBNs for KDP publishing:
You don't need an ISBN to publish your book on KDP: KDP assigns a unique identifier to your book called the ASIN (Amazon Standard Identification Number) which is used to identify your book on Amazon.
ISBNs are not required, but they can be useful: While ISBNs are not required to publish your book on KDP, they can be useful if you plan on distributing your book through other channels, such as bookstores or libraries.
If you choose to purchase an ISBN, you will be the publisher: If you choose to purchase an ISBN for your book, you will be considered the publisher and will be listed as such on the ISBN record.
You can purchase ISBNs through Bowker: Bowker is the official ISBN agency in the United States. They offer ISBNs for purchase individually or in bulk.
ISBNs are transferable: If you purchase an ISBN for your book, it can be transferred to another book or edition in the future.
In summary, ISBNs are not required for publishing on KDP, but they can be useful if you plan on distributing your book through other channels. If you choose to purchase an ISBN, you will be listed as the publisher and it is transferable. Keep in mind that purchasing an ISBN is optional, and many self-published authors choose not to purchase one.