Public libraries lend e-books under licence agreements rather than ownership, and that single difference shapes everything a borrower sees. A digital copy usually behaves like one copy of a print book: one borrower at a time, a fixed loan period, and access that stops working when the period ends. The text is the same, but the rules around it are not.
Why a borrowed e-book is not a purchased book
When a library buys a print book it owns that physical copy. Under the first sale doctrine in United States copyright law, the owner of a lawfully made copy may lend, resell or give it away, and public library lending rests on that principle. Electronic copies sit outside it. A library does not buy an e-book so much as licence the right to lend it, and the licence fixes the price, the term and the number of borrowers allowed. Digital rights management then enforces those terms on the reader’s device, which is why an expired loan simply stops opening rather than waiting to be handed back.
The licence models libraries can buy
Publishers and aggregators sell library e-books under a handful of models, and each one changes how many people can read at once:
| Model | How it works |
|---|---|
| One copy, one user | One licence equals one borrower at a time, the closest match to print. Access may be perpetual or run for a set term. |
| Metered access | The licence covers a set number of loans, or a fixed window, after which the library buys again. |
| Pay per use | No copy sits in the catalogue in advance; the library pays only when a borrower completes a loan. |
| Simultaneous use | Many borrowers can read the same title at once, usually for a higher fee or as a bundle. |
The 2023 Digital Public Library Ecosystem report from the American Library Association describes these as the standard shapes of the market, and notes that libraries are often charged several times the consumer price for a popular title’s licence, even when that licence later expires. Publishers also use embargoes, holding new digital titles back from libraries for a period after public release.
The distributor in the middle
Most libraries do not deal with publishers directly. They buy through aggregators, which supply the platform, the reading app and the checkout system. The American Library Association report places OverDrive, the largest of them, in roughly 17,000 public libraries in North America. This layer is why borrowing usually means signing in with a library card inside an app rather than downloading a file, and why hold periods, loan lengths and renewals are set by the library rather than the reader. When every copy of a title is out, a patron joins a queue and is told when a copy frees up.
Controlled digital lending and the ownership argument
A separate approach, controlled digital lending, tries to carry print-style ownership into the digital world. A library scans a physical copy it owns and lends the digital file instead, on a strict owned-to-loaned ratio: one digital loan at a time for each physical copy held, with the paper copy kept off the shelf while the file is out. The International Federation of Library Associations and Institutions backs the principle in its position on controlled digital lending, arguing that lending is not an exclusive right under international law and that digital use should carry at least the flexibility of physical use. It remains contested ground. In the United States a group of publishers sued the Internet Archive over its controlled digital lending programme, and a district court ruled in the publishers’ favour in 2023, as the ALA report records. Most public libraries therefore still build their collections through licences.
What it means for borrowers
- Availability follows budget: costly licences mean fewer copies, and fewer copies mean longer waits on popular titles.
- A loan ends by itself, and the file stops opening on the due date.
- Choice varies by library, because each one negotiates its own catalogue, terms and platform.
- Requests matter, since librarians decide what to licence and purchase suggestions shape what appears.
Bottom line
Library e-lending runs on contracts, not copies. Print lending is built on ownership and the freedom to lend what you own; digital lending is built on licences that decide how many people can read, for how long and at what price. That split explains the queues, the files that expire and why a title that is cheap to buy can be expensive for a library to lend.
For the market models and pricing, see ala.org. For the controlled digital lending position, see ifla.org, and for how borrowing and holds work on the largest platform, see overdrive.com. General background on library e-book issues is collected at ala.org.