How to Copyright a Book (2026 Guide for Authors)

Your book is automatically protected by copyright the moment you write it down — you don't have to register to own the copyright. But registering it with the U.S. Copyright Office is what lets you enforce that right: you generally must register before suing over infringement, and registering before infringement or within three months of publication unlocks statutory damages and attorney's fees. You register a book as a "literary work" for $45 to $65, uploading your manuscript if it's unpublished or mailing copies if it's a published print edition.

This guide covers what's specific to books. For the general registration mechanics — account setup, fees, the eCO steps — see our main guide on how to register a copyright; here we focus on the parts that matter for authors.

A book is a "literary work"

When you register, you'll select the category that fits your work, and a book is a literary work — the category for works expressed in words, including novels, nonfiction, poetry collections, short-story collections, and most manuscripts. The copyright protects your original expression: the actual text you wrote. It does not protect the title (titles aren't copyrightable — see whether you can copyright a title), the ideas or facts in the book, or any system or method you describe. Anyone can write about the same topic or use the same idea; what they can't do is copy your text.

If your book includes substantial material from others — long quotations, illustrations you didn't create, previously published chapters — you'll need to account for that, since you can only claim copyright in the parts you authored. For a book that's mostly your own writing with minor third-party quotes used properly, you register the whole work as your literary work.

Which application to use

For a typical single-author book that isn't a work made for hire, the Single Application ($45) is the cheapest route: one work, one author, one claimant. If your book has co-authors, was written as a work made for hire (for an employer), or has multiple claimants, you'll use the Standard Application ($65). Most independent authors registering their own novel or nonfiction book qualify for the Single Application.

A note for co-authored books: when two or more people create a book intending to merge their contributions into a unified whole, they're joint authors and co-own the copyright. List all authors and claimants accurately; you can't squeeze a co-authored book into the single-author application.

Published vs. unpublished — and the deposit

Whether your book is published changes the deposit copy you submit (the copy the Copyright Office keeps):

Unpublished manuscript: you upload an electronic copy of the manuscript through the online system. This is the simplest case — a writer registering a finished manuscript before publication uploads the file and is done.
Published only in digital/online form: you generally upload an electronic copy.
Published in print in the U.S. before you applied: you typically complete the application online but then mail physical copies of the best edition of the published book to the Copyright Office, because works first published in the U.S. in a physical format require a physical deposit.

This deposit requirement also overlaps with a separate legal duty: works published in the U.S. are subject to a "mandatory deposit" requirement for the Library of Congress, generally two copies of the best edition. Registering and depositing at the same time efficiently handles both.

When to register — before or after publishing? You can register at either stage, and there are reasons for each. Registering the unpublished manuscript gets protection on record early (useful if you're sharing it with agents, editors, or collaborators). Registering around publication is common because that's when the work goes out into the world. The key timing rule is the one that governs remedies: to preserve statutory damages and attorney's fees, register before any infringement begins or within three months of first publication. Many authors register at publication for exactly this reason.

ISBN is not copyright (and other myths)

A few persistent misconceptions trip up new authors:

An ISBN is not a copyright. An ISBN (International Standard Book Number) is a product identifier used by the publishing and bookselling trade to catalog and sell your book. It has nothing to do with owning or registering the copyright. You can have an ISBN with no copyright registration, and a registered copyright with no ISBN. They serve completely different purposes.
Mailing yourself a copy doesn't protect your book. The "poor man's copyright" — sealing a manuscript in an envelope and mailing it to yourself — has no legal effect and is not a substitute for registration. It won't give you the right to sue or access to statutory damages.
The © symbol isn't required. You can put a copyright notice in your book (and it's good practice), but the copyright exists whether or not you include the symbol, and the notice isn't what protects the work.
Self-publishing doesn't change your rights. Whether you go through a traditional publisher or self-publish, you're the author and initial copyright owner of your text. A traditional publishing contract may involve licensing or assigning certain rights to the publisher — read those terms carefully — but self-publishing leaves the copyright squarely with you.

Pen names and books

If you write under a pseudonym, you can still register the copyright, and you can choose how to handle your identity. The book is registered as a pseudonymous work, and you can list the author as anonymous or by pseudonym; you have the option of providing your real name in the records or keeping it out. Be aware that this affects the copyright term (a pseudonymous work runs 95 years from publication or 120 from creation unless your real identity is on record, in which case the life-plus-70 term applies — see how long copyright lasts). The pen name itself isn't protected by copyright, as we explain in whether you can copyright a name.

A practical sequence for authors

Finish the manuscript, since you register the work as it exists.
Decide on timing — register the unpublished manuscript for an early record, or register at publication; either way, aim to register before infringement or within three months of publishing to keep statutory damages on the table.
Choose the Single Application if you're the sole author and it's not for hire; otherwise Standard.
Prepare your deposit — an uploaded file for an unpublished or digital-only book, physical copies for a U.S. print edition.
Keep your certificate. You'll need it to enforce your copyright or prove ownership to a publisher or in a dispute.

The reassuring frame: protecting a book is one of the most straightforward registrations there is. The copyright is already yours the moment you write it; registration is an inexpensive, mostly self-service step that turns that ownership into something you can actually enforce.

Frequently asked questions

Do I need to copyright my book before publishing it?

No — your book is automatically copyrighted the moment you write it, published or not. You don't have to register before publishing. But registering is what lets you enforce the copyright, and the timing matters: to keep eligibility for statutory damages and attorney's fees, register before any infringement begins or within three months of first publication. Many authors register at publication for that reason, though you can also register the unpublished manuscript earlier to have protection on record while sharing it with agents or editors.

Is an ISBN the same as a copyright?

No. An ISBN is a product identifier used by the book trade to catalog and sell your book; it has nothing to do with copyright. Your copyright exists automatically when you write the book and is enforced by registering with the U.S. Copyright Office — a completely separate process from getting an ISBN. You can have one without the other. Don't assume buying an ISBN protects your book legally; it doesn't.

How much does it cost to copyright a book?

As of 2026, registering a single-author book that isn't a work made for hire costs $45 using the Single Application; co-authored books, works made for hire, or multiple-claimant books use the $65 Standard Application. Those are the Copyright Office filing fees. A fee increase was proposed in early 2026, so confirm the current amount on copyright.gov. Note an ISBN is a separate, unrelated cost and isn't required to register your copyright.

This page is part of our copyright-registration series; see the general process in how to register a copyright, and related guides on how long copyright lasts and whether you can copyright a title. Register at the U.S. Copyright Office.