US audiobook sales reached $2.43 billion in 2025, and indie authors now have more ways to produce one than ever: hire a human narrator through ACX, split royalties with a narrator, or use free AI narration from Amazon, Google or Apple. The right route depends on three things: how much you can pay up front, whether you want to sell wide, and whether your ebook is in KDP Select. The rules changed three times in 2026, so this guide works from the current terms, checked on November 8, 2026.
The audiobook market in 2026: still growing faster than ebooks
The Audio Publishers Association reported in June 2026 that US audiobook sales reached $2.43 billion in 2025, 9% over the previous year, and that publishers had over 750,000 active titles, a 43% increase from 2024. Its consumer survey found 58% of American adults have listened to an audiobook, an estimated 157 million people.
Publisher revenue data points the same way. In the AAP's August 2026 StatShot, digital audio revenue was up 12.6% to $806.3 million for January to August, while ebook revenue fell 3.4% to $685.1 million. StatShot covers participating publishers, not indie sales, but the direction is clear.
For participating publishers, digital audio out-earned ebooks from January to August 2026: it grew 12.6% while ebooks fell 3.4%.
Indies have noticed. In Written Word Media's 2025 survey, 51% of authors said they have at least one audiobook. Amazon makes the opposite point on its Virtual Voice page: "only 5 percent of all books on Amazon are released as audiobooks." Demand is there; most books still have no audio edition.
For wider context on formats and income, see our State of Indie Publishing 2026 report.
Route 1: ACX with a human narrator
ACX is Audible's marketplace, where rights holders hire producers (narrators or studios) and publish to Audible, Amazon and Apple Books. Amazon's ACX overview says ACX is currently open to residents of the United States, United Kingdom, Canada and Ireland with a local tax ID and bank account.
The 2026 royalty change
Audible moved ACX to a new royalty model this year. Per ACX's announcement, enrollment opened to all creators on May 26, 2026, and "By end of year, the legacy royalty model will be discontinued." Titles must enroll in the new model or stop distribution.
The ACX royalty help page gives the rates: 50% for exclusive distribution and 30% for non-exclusive, up from 40% and 25% under the legacy model. Exclusive means Audible, Amazon and Apple Books only. Non-exclusive lets you sell the same audio anywhere else.
The new model also changes membership pay. Royalties on credit and subscription listening come from "Member Value," a member's plan price minus taxes and fees, divided among the titles they engaged with. Cash purchase calculations didn't change, though the higher rates apply to them. Titles on the new model can also be opted into Audible's all-you-can-listen catalog and given a suggested price, which Audible may override.
Pay for Production vs Royalty Share
ACX offers three deal types, per its royalty help page:
- Pay for Production. A one-time flat fee based on finished length. You keep the full royalty.
- Royalty Share. No upfront fee; you and the producer split the royalty. Under the new model that means 25% each on exclusive titles. Royalty Share requires exclusive distribution, and the producer earns for seven years.
- Royalty Share Plus. A reduced upfront fee plus the split. If the producer works under SAG-AFTRA Health and Retirement, "the offered rate must be at least $100 per-finished-hour."
The arithmetic behind that box: ACX's 2013 budgeting post estimated "about 9,300 words equals one hour of finished audio" and put industry rates at roughly $200 per finished hour (PFH) for narration and another $200 PFH for post-production. That benchmark is from June 2013, thirteen years old, and ACX doesn't publish a current range, so we'd treat it as a rough planning floor rather than a quote. ACX's current help page says most producers need 5 to 7 hours of work per finished hour, which is why rates are quoted per finished hour rather than per word.
Payback is simple division (again our arithmetic, not an ACX figure). ACX royalties are a percentage of net sales, so under Pay for Production at the 50% exclusive rate a $3,870 production needs about $7,740 in royalty-bearing net sales to break even ($3,870 / 0.50). At 30% non-exclusive, the same production needs about $12,900 through ACX's channels ($3,870 / 0.30), offset by whatever you sell elsewhere.
We looked for a current SAG-AFTRA audiobook rate sheet and found no published one, so we don't quote union scale here. Ask narrators for their rate directly on ACX.
ACX audiobooks in Kindle+
On October 22, 2026, Amazon renamed Kindle Unlimited to Kindle+ and added audiobooks for US customers. ACX titles can join by enrolling in KDP Select from the KDP Bookshelf. The eligibility page lists four requirements: the ebook must be live and in KDP Select, the audiobook must have exclusive Audible distribution, Whispersync for Voice must be on, and the deal must be Pay for Production. Royalty Share and Royalty Share Plus titles aren't eligible yet; Amazon says it is "exploring" that, and that audio in Kindle+ is US-only for now "with more marketplaces to come." Our read is that Royalty Share eligibility will follow too, since Amazon says its goal is to grow the program, but that is a projection, not an Amazon commitment.
Listening is paid by page from the KDP Select Global Fund, and Amazon says it is adding money to the fund for audio. A reader who reads a page and then listens to it is paid once, per the Kindle+ royalties page for ACX titles. Your Audible royalties stay separate and continue to appear in ACX.
One catch: if you edit the ebook so it no longer matches the audio, the audiobook loses eligibility until the files are back in sync. Lock the text before you record. For how Select exclusivity compares with selling wide, see Kindle Unlimited vs going wide.
ACX and AI narration
ACX's submission requirements are explicit: an audiobook "must be narrated by a human unless otherwise authorized," and unauthorized text-to-speech or AI recordings are prohibited. Don't upload an AI-voiced file to ACX expecting it to pass. Our post on KDP AI rules for images, covers and translations covers how Amazon treats AI elsewhere in your book.
Route 2: KDP Virtual Voice (Amazon's AI narration)
Virtual Voice is an invite-only KDP beta that Amazon's help page describes as an offering "that uses computer-generated speech technology." You create it from an eligible ebook on your Bookshelf, "for free at this time," and the help page lists 80+ voices.
Eligibility. The eligibility page requires a live, reflowable ebook in English, Spanish, Italian or French, with a Kindle interactive (NCX) table of contents, a cover, US or worldwide rights, no existing Audible audiobook and no public domain content. Pre-orders aren't eligible.
Price and pay. List prices run $3.99 to $14.99, per the getting-started page, and the pricing page says the beta pays 40% on all sales, while warning Amazon "may pay at a lower royalty rate for books sold below the minimum list price" in future. By our arithmetic, a sale at a $9.99 list price with no discount pays about $4.00 (40% x $9.99); the terms apply the 40% to Amazon's net sales receipts, so discounts lower it. Credit sales are weighted by an "Allocation Factor" based on member revenue, so per-unit pay on those varies. The beta is US-only.
The October 21 terms. The Virtual Voice beta terms were last updated on October 21, 2026, the day before the Kindle+ launch. We can't see a dated changelog, so we can only tell you what the current version says. Three clauses matter most:
- You grant Amazon a "nonexclusive, irrevocable" license to create and sell the audio edition, and Amazon retains "ownership in the AVV Edition file." Our reading: the file stays Amazon's, so it isn't yours to sell in other stores.
- If the ebook is in KDP Select, you give Amazon the exclusive right to the audio edition, and during each 90-day period you "cannot sell or distribute" the book in any audio format.
- Virtual Voice editions of Select ebooks may go into Audible Plus, Kindle+ or similar subscriptions, paid from a monthly fund.
The Kindle+ help page adds that you can't pull a Virtual Voice audiobook out of KDP Select separately from its ebook; your only option is to unpublish it. And per the pricing page, if you unpublish, exclusivity still runs to the end of the current 90-day term.
Route 3: wide distribution (Spotify, INaudio, Kobo)
If you own your audio files, human or AI, you can distribute them outside Amazon. The old route, Findaway Voices by Spotify, was set to stop operating on August 1, 2025, ALLi reported in May 2025: non-Spotify distribution moved to a new company, INaudio, and Spotify uploads moved to Spotify for Authors.
Spotify for Authors. Spotify's distribution terms (last updated May 4, 2026) pay 50% of your suggested retail price on a la carte sales, and a pro-rata share of total consumption for subscription listening. Spotify accepts digital voice narration, including files from Google Play Books and ElevenLabs, but you must tick a disclosure box and Spotify adds a line to your description. It doesn't share digitally narrated titles with its referral partners.
Voices by INaudio. INaudio's support page says you keep 80% of the royalties it receives. Its partners pay 40% to 50% of list price for a la carte sales and 30% to 40% for subscription, so by our arithmetic (80% of 40% to 50%) your share works out to roughly 32% to 40% of list on a la carte.
Kobo Writing Life. Kobo lets you upload audio directly. Its earnings page pays 45% of list on a la carte sales at $2.99 or more (35% below that) and 32% for subscription purchases. By our arithmetic, a $14.99 audiobook earns about $6.75 per a la carte sale (45% x $14.99). If you use AI narration, Kobo asks you to credit the narrator as "Synthesised voice" (male, female or unspecified).
Remember that ACX exclusive, Virtual Voice in Select and Kindle+ enrollment all rule these stores out.
Route 4: AI narration from Google and Apple
Google Play auto-narration. Google's program policies say there's "no program fee" during the beta to generate and publish an auto-narrated audiobook, and you must own the audio rights. You may download the file and sell it elsewhere, but your Play price can't be higher than elsewhere, and the book must also be on sale on Play wherever you sell it. The policy page doesn't state the revenue share; it shows in Partner Center reports.
Apple Books digital narration. Apple's digital narration page requires an English ebook already on Apple Books and audio rights. Independent authors apply through Draft2Digital, Ingram CoreSource or PublishDrive. Apple screens nominations for compatibility, naming categories such as poetry and cookbooks as poor fits, takes one to two months, and labels the result "Narrated by Apple Books." The page doesn't publish cost or royalty terms; ask your partner.
Comparing the routes
The table hides one tradeoff worth saying plainly. The routes that cost nothing up front (Royalty Share, Virtual Voice) are the ones with the tightest lock-in. The routes that leave you free to go wide (non-exclusive ACX, INaudio, Kobo, Spotify) are the ones where you pay or produce the audio yourself.
See every path
- Can you pay several thousand dollars up front for a human narrator? (About $3,900 for a 90,000-word novel at ACX's 2013 benchmark of $400 per finished hour; our arithmetic.) Yes → Do you want the audiobook in libraries, Kobo, Spotify or other stores beyond Audible, Amazon and Apple? Yes → ACX non-exclusive at 30%, or produce independently and distribute through INaudio, Kobo and Spotify for Authors. You keep the files and the freedom; you give up Kindle+ for the audio.
- Can you pay several thousand dollars up front for a human narrator? (About $3,900 for a 90,000-word novel at ACX's 2013 benchmark of $400 per finished hour; our arithmetic.) Yes → Do you want the audiobook in libraries, Kobo, Spotify or other stores beyond Audible, Amazon and Apple? No → ACX Pay for Production, exclusive, at 50%. Enable Whispersync and enroll the audiobook in KDP Select so it earns from Kindle+ listening too.
- Can you pay several thousand dollars up front for a human narrator? (About $3,900 for a 90,000-word novel at ACX's 2013 benchmark of $400 per finished hour; our arithmetic.) No → Do you have a sales track record or series that might persuade a narrator to share royalties? Yes → Post an ACX Royalty Share (or Royalty Share Plus) offer. Expect exclusivity and a seven-year split, and note these deals aren't yet eligible for Kindle+.
- Can you pay several thousand dollars up front for a human narrator? (About $3,900 for a 90,000-word novel at ACX's 2013 benchmark of $400 per finished hour; our arithmetic.) No → Do you have a sales track record or series that might persuade a narrator to share royalties? No → Is your ebook in KDP Select, and has KDP invited you to Virtual Voice? Yes → Virtual Voice is free and lands in Kindle+ and Audible Plus. Accept that Amazon keeps the audio file and that Select makes every audio edition exclusive while you're enrolled.
- Can you pay several thousand dollars up front for a human narrator? (About $3,900 for a 90,000-word novel at ACX's 2013 benchmark of $400 per finished hour; our arithmetic.) No → Do you have a sales track record or series that might persuade a narrator to share royalties? No → Is your ebook in KDP Select, and has KDP invited you to Virtual Voice? No → Try digital narration outside Amazon: Google Play auto-narration, Apple digital narration through a partner, or your own AI files on Spotify and Kobo with the required labels. Or wait and save for a human narrator.
Before you record: prepare the manuscript
Narration is unforgiving. A listener can't skim past a character whose eye color changes or a name spelled two ways, and a narrator will read exactly what's on the page. Amazon's own Virtual Voice guide asks for chapter titles as text, a complete table of contents, footnotes formatted as superscripts and a full proofread before you generate audio. Those habits help human narrators too.
What to do this week:
- Freeze the text. Run a final self-edit pass. Kindle+ eligibility for ACX titles depends on ebook and audio staying in sync.
- Build a pronunciation sheet. List every invented name, place and term, with how to say it. If you keep a story bible, use its character and location lists as your starting point.
- Time the book. Divide your word count by 9,300 to estimate finished hours, then multiply by any quoted PFH rate.
- Pick the lock-in you can live with. Decide on Select vs wide for the ebook first, because it decides half your audio options.
- Check the money. Compare each route's published rate in the table above against your expected sales; our ebook pricing guide covers how Kindle+ pays per page.
In AAP's January-to-August 2026 figures, digital audio grew faster than ebooks, hardbacks and paperbacks, and in our view two of the biggest 2026 changes (ACX's 50% rate and audio in Kindle+) favor authors who commit to Amazon. That's a real tradeoff, not a default. Read the terms linked above before you sign anything, because three of them changed this year and they will change again.