A new or substantially revised edition needs a new ISBN. An unchanged reprint in the same format normally keeps the existing ISBN. Once an ISBN has been assigned to a published product, it can never be recycled for another book, edition, or format—even after the original goes out of print.
The phrase “reuse an ISBN” confuses because two different questions are involved. You should continue using an existing ISBN on the same unchanged publication product. You must not reassign that number to a different product.
|
Change |
New ISBN? |
Reason |
| Unchanged reprint | No | Same edition and product form |
| Minor typo or grammar corrections | Usually no | Correction does not create a new edition |
| Cover redesign only | Usually no | Same product unless marketed as a distinct special edition |
| Price change | No | Update metadata; product identity remains |
| New or substantially revised edition | Yes | Readers and supply chain must distinguish it |
| Paperback to hardcover | Yes | Different product form |
| Translation | Yes | Different language edition |
| Title change after publication | Yes | Changed title identity |
| New publisher or imprint | Usually yes | Registrant/publisher metadata changes |
| Out-of-print book replaced by a different title | Yes | Old ISBN is never recycled |
| Private draft never submitted | Confirm first | Platform and agency assignment status determine the safe action |
ISBN.org states that once a title is published with an ISBN, that ISBN can never be used again for another title. Libraries, used-book sellers, collectors, databases, and rights holders may continue referring to the original product long after it is unavailable from the publisher.
Recycling the number would join two products to one catalog key. A retailer could display the wrong cover, edition, page count, publisher, or price. A library record could point to the wrong text. Customers could order a revised book and receive old inventory.
A new edition is a product that has changed enough that the publisher and reader should be able to distinguish it from the earlier version. A declared second edition, substantially revised text, new chapters, abridgement, annotation, translation, or a new publisher normally calls for a new ISBN.
Use an edition statement in the copyright-page and retailer metadata. Do not label a book “Second Edition” while leaving the first edition’s ISBN on the files. Each released format of the new edition needs its own identifier.
A paperback receives two new chapters, updated regulations, and revised case studies. The publisher releases it as a second edition in paperback and EPUB. The paperback gets one new ISBN; the EPUB gets another if it is assigned an ISBN. The first-edition ISBNs remain attached to the old products.
Fixing typographical, grammatical, or small factual errors without changing the edition’s substance normally does not require a new ISBN. Update the source and metadata as needed, but do not present the corrections as a new edition.
A new print run of the same edition and format retains the ISBN. The number identifies the publication product, not the manufacturing batch.
A cover redesign or price change alone generally does not create a new edition. Ensure retailer metadata and cover images are refreshed so old and new inventory are not misleading. A separately marketed collector’s or special edition may be a distinct product and need a new ISBN.
Moving the same specifications from one printer to another, or from offset to print-on-demand, generally does not require a new ISBN. A change in binding, trim size, or other product-defining specification can change the answer.
If a number was entered into a private draft but the product was never submitted, published, or distributed, a platform may allow it to be removed and used in the intended account. This is not the same as reusing an ISBN that reached publication.
B&N Press says an ISBN may be reusable in its workflow if the project was never submitted for review or sale, but not after those steps. Platform behavior and agency assignment status are separate checks. If the number has been registered or exposed in the supply chain, contact the agency or platform before changing it.
A free ISBN supplied by a platform normally records that platform or a designated imprint as publisher and may be restricted to that service. It cannot simply be moved to a different publishing provider. A publisher-owned ISBN remains linked to the registrant that obtained it.
Do not borrow an ISBN from a friend, use an old client’s unused number, or transfer a prefix informally. ISBN.org provides specific rules for acquisitions, rights reversions, and company ownership changes.
Yes. A new or substantially revised edition needs a new ISBN for each format released.
Continue using it on the same edition and format. That is continued use, not reassignment.
No. The number remains permanently associated with the original publication product.
Usually not if the edition, content, format, and publisher stay the same. A distinct special edition may need one.
Minor corrections normally do not. Substantial revisions presented as a new edition do.
Usually not. Free ISBNs commonly identify the platform’s imprint and are restricted by its terms.
Bowker is the official ISBN agency for publishers physically located in the United States and its territories.
Keep an ISBN on the exact product it was assigned to, and never recycle it. Unchanged reprints and minor corrections normally retain their number. New editions, formats, translations, and publisher changes normally need new ISBNs. When the boundary is unclear, document the changes and confirm the decision with the responsible ISBN agency before files and metadata go live.
