Competition
A crowded shelf
With over 4 million ISBNs in 2025, simply publishing is not a differentiator. A clear reader, a sharp promise, and professional quality are.
By the numbers
Book Publishing by the Numbers, 2026
Book output is surging in 2026: total ISBN output topped 4 million in 2025, up 32.5% from 2024, according to Instant Press, and self-published titles now outnumber traditionally published ones by more than five to one.
Last updated: November 2026
Is it still worth publishing a book in 2026?
Yes, for experts who measure the book by authority rather than royalties. More books means more competition, and a survey cited by Instant Press found a median 2022 book income of $2,000 for all authors. That is why Big Impact Books pairs every book with promotion aimed at clients and opportunities.
The strongest published statistics, with sources
| Statistic | What it measures | Source |
|---|---|---|
| Over 4 million | Total ISBN output across all publishing in 2025, up 32.5% from 2024 | Instant Press |
| More than 5 to 1 | Self-published titles to traditionally published titles, based on a figure reported by Publishers Weekly in March 2026, up 38.7% from the year before | Instant Press |
| About 10% vs 43.5% | Growth in traditional output vs self-published output, 2022 to 2025 | Instant Press |
| $10,000 and $2,000 | Median 2022 book income for full-time authors, and for all authors combined | Instant Press |
| 85%, 54%, 50% | ChatGPT, Claude, and ProWritingAid among generative AI tools authors use | ManuscriptReport |
ManuscriptReport notes that where a statistic is older than 18 months, it marks it Historical and adds context. The income figures above are from 2022, so read them as historical.
What these numbers mean for CEOs and attorneys
Income
Royalties are not the point
Median book income figures are modest. For an expert, the return comes through clients, referrals, and invitations. Attorney author Manisha P. Patel reported an increase in referrals after publishing.
AI
Your voice is the edge
With wide AI use among authors, books built from an expert’s own stories and voice stand apart. Big Impact Books’ post Your Book Needs Your Voice argues exactly this.
See how these trends shape your options in the book proposal writing service guide and the legal author publishing paths.
Questions about publishing numbers
Traditional publishing or self-publishing: which is better for an expert?
Traditional publishing offers a publisher’s distribution but requires a proposal, usually an agent, and time. Self-publishing and independent publishing offer speed and control. Instant Press, citing Publishers Weekly in March 2026, reports that self-published titles now outnumber traditionally published ones by more than five to one.
More in the full FAQ about Traditional publishing or self-publishing: which is better for an expert?Should I use AI to write my book?
Many authors use it in some way. ManuscriptReport’s 2026 statistics page lists ChatGPT at 85%, Claude at 54%, and ProWritingAid at 50% among the generative AI tools authors use. For an authority book, keep your own expertise, stories, and voice at the center, because that is what readers trust.
More in the full FAQ about Should I use AI to write my book?How many books to sell to make $100,000?
Divide $100,000 by what you earn per copy. At $2.50 per copy you would need 40,000 copies; at $5 per copy, 20,000. For context, a survey cited by Instant Press found a median 2022 book income of $2,000 for all authors. That is why most experts measure a book by clients and opportunities, not royalties.
More in the full FAQ about How many books to sell to make $100,000?How many books do you need to sell to make $1,000,000?
Use the same math. At $2.50 per copy you would need 400,000 copies; at $5 per copy, 200,000. Very few books reach those numbers. For a CEO or attorney, a book’s value usually shows up as new clients, referrals, speaking invitations, and media attention rather than as sales income on its own.
More in the full FAQ about How many books do you need to sell to make $1,000,000?How much does an author make on a $25 book?
It depends on the royalty rate in the author’s contract or the publishing platform’s terms, minus printing costs where they apply. The math is the list price times your royalty rate. As an example, at a 10 percent royalty a $25 book earns $2.50 per copy. Check your own contract or platform royalty page for your real rate.
More in the full FAQ about How much does an author make on a $25 book?How do I keep my book relevant after launch?
Treat the book as a long-term asset: keep using it in speaking, client onboarding, media pitches, and content. Big Impact Books calls this a legacy book plan, and its post Stay Relevant After Launch argues that skipping one leaves money on the table.
More in the full FAQ about How do I keep my book relevant after launch?Want to see how a done-for-you authority book works?
Big Impact Books plans, writes, publishes, and promotes books for CEOs and attorneys in about one hour a week of interviews. Read about the full process and free checklists on its main website.