How Long Does ACX Take to Approve an Audiobook? What Happens After You Submit

You have uploaded the last file, clicked submit, and now the dashboard just sits there. So how long does ACX take to approve an audiobook? The short answer: the ACX quality assurance team generally reviews submitted files within 10 business days. ACX also says that titles which meet its requirements are posted for sale on Audible and Amazon within 10 business days, and it does not spell out whether those are one window or two running back to back. So plan on about two calendar weeks at best for a clean submission, and allow up to four to be safe. Keep in mind that Apple Books can take a couple of days beyond that window, and that any round of corrections adds more time.

The rest of this guide covers what ACX is doing during those days, what sends a title back to the start of the queue, and how to use the wait so launch day is not a scramble.

What ACX Does With Your Files

After you submit, your project moves through a few stages. You can track this progress directly within the Completed Projects section of your account, and ACX will also send you email updates if there are any issues that require your attention. Knowing these steps helps you spot exactly where your project sits in the queue.

1. Technical Review: The ACX quality assurance team checks your audio files against their specific requirements, such as RMS levels between -23dB and -18dB, peaks under -3dB, and 192 kbps constant bitrate MP3 formatting. You can find the full details in the ACX audio submission requirements checklist.
2. Metadata and Cover Art Check: Your book cover art is reviewed separately to ensure it meets their specific resolution and file size standards, which can also take up to 10 business days as detailed on the ACX cover art requirements page.
3. Content Compliance: The team verifies that your narration aligns with their current platform policies, including the audio submission requirements that prohibit unauthorized AI or text-to-speech recordings.
4. Retail Preparation: Once the audio and art are approved, the title moves to the distribution phase where it is ingested into the Audible and Amazon stores for retail sale.

If you have not actually submitted yet, it is worth ten minutes to walk through how to upload your audiobook to Audible step by step and to tick off the ACX audio submission requirements checklist first. And if you are earlier in the process still, the step-by-step process for getting your book on Audible covers the setup that comes before any of this waiting begins.

A Realistic Timeline

ACX quotes business days, which is easy to misread as calendar days. Ten business days is two full calendar weeks, and longer if a public holiday falls inside the window. Here is how the common cases work out.

What happens	What to plan for
Clean submission, review and store listing in one window	About 2 calendar weeks
Clean submission, review and store listing back to back	Up to about 4 calendar weeks
One round of corrections	Add the time you need to fix the files, plus another review of up to 10 business days
Apple Books listing	A couple of days after Audible and Amazon

The row that hurts is the third one. A single returned file can double the wait, which is why the checks in the next section are worth doing before you submit and not after.

What Slows Down the ACX Approval Time

The 10-business-day window is an estimate based on a "clean" submission that passes on the first try. If your files fail the initial quality check, they are returned to you for corrections. Each time you have to fix and resubmit, the clock essentially resets for that specific review stage. This is why I always recommend running your files through the ACX Audio Lab tool before you finalize your upload. While it does not catch every editing error or environmental noise issue, it is a great free way to catch technical spec errors early and save yourself a week of waiting.

Another common hurdle is a policy one rather than a technical one. ACX's audio submission requirements state that unauthorized use of text-to-speech, AI, or automated recordings is prohibited, and the ACX producer's checklist confirms that files which do not meet the requirements are returned for correction. If you are using AI, it is important to understand the current ACX policy on AI-narrated audiobooks before you commit to a distribution strategy. The practical split for many authors is ACX for human-narrated titles and a wide distributor for AI-narrated ones. If you are producing AI narration for those wider platforms, a premium voice generator like ElevenLabs can give you the natural-sounding narration listeners expect, and Audie can use ElevenLabs voices when it builds your audiobook. Whichever route you pick, follow each platform's own rules on how the audio is made and disclosed.

Disclosure: this article contains affiliate links. Audie may earn a commission if you sign up through them.

What Happens After You Submit

Once the technical hurdles are cleared, your audiobook enters the final stretch. ACX has worked on shortening this stage, as described in their blog post regarding time-to-retail. This stage is about getting the approved title into the Audible, Amazon, and Apple Books stores.

During this period, you will notice that Audible, not you, determines the final retail price of your audiobook based primarily on its length, as explained on the official ACX help page. It is a good idea to focus your energy on marketing preparations while you wait for the "Live" status. I suggest drafting your social media announcements and email newsletters now, but avoid setting a hard launch date until the book is actually available for sale. Announcing a book that is already on sale is easier than explaining a missed date.

Five Checks That Prevent a Second Wait

Every item here is something ACX publishes and something you can confirm yourself in a few minutes. None of them needs a trained ear.

1. Export settings. Every file is an MP3 at 192 kbps or higher, constant bit rate, 44.1 kHz. Variable bit rate is the default in a lot of software, so look at the setting and do not assume.
2. Channel format. All files are mono, or all files are stereo. One stray stereo chapter in a mono book is enough to send the set back.
3. Levels. Each file measures between -23dB and -18dB RMS, with peaks under -3dB and a noise floor under -60dB RMS.
4. File structure. One chapter or section per file, no file longer than 120 minutes, opening and closing credits as their own files, and a retail sample of 5 minutes or less.
5. Cover. A square image of at least 2400 x 2400 pixels. The cover has its own review, so a bad cover can hold up a book whose audio is fine.

If any of those fail, fix them now. Ten minutes here is cheaper than another ten business days in the queue.

Practical Tips for the Waiting Period

One mistake I see authors make time and again is trying to force a release date that is too close to their submission date. Because ACX does not promise an exact day for approval, setting a rigid launch date often leads to unnecessary stress when files are held up in quality assurance. Instead, wait until you receive the official notification that your project has moved to the retail store before you start your final promotional push.

While you wait, consider the broader scope of your distribution. ACX reaches Audible, Amazon, and Apple Books, but it is not the only way to sell an audiobook, and the waiting period is a good moment to decide whether wide distribution suits your next title. That matters most if you plan to use AI narration, since the standard ACX upload is meant for human-narrated audio.

Managing Your Expectations

Ten business days is the window ACX states, not a guarantee, and business days skip weekends and public holidays, so leave yourself some slack. The most important thing is to ensure your metadata, credits, and retail samples are perfectly aligned with your book manuscript. A mismatch between your uploaded files and your book details is exactly the kind of thing that can get a title sent back, which only adds more time to your wait. Taking an extra hour to verify your metadata before you click submit can save you several days of waiting later on.

Once your book is finally live, you will start earning royalties on sales. I have put together a guide on audiobook royalties explained for indie authors so you can understand what happens after that first sale comes in.

Frequently Asked Questions

How long until my audiobook is on Audible?

ACX says titles that meet its submission requirements are posted for sale on Audible and Amazon within 10 business days, which works out to about two calendar weeks for a clean submission, or up to four if the review and the store listing run back to back. Apple Books may take a couple of extra days. If your files are returned for correction, the wait starts again once you resubmit, so the real answer depends on getting it right the first time. You can track progress in your ACX account.

Why did I get an email about a correction?

If your files are returned for correction, it means they did not meet the specific technical requirements for ACX, such as audio levels or bitrate settings. Every round of corrections requires a new review, so it is vital to double-check your files against the submission checklist before you upload them.

Can I set a specific launch date for my audiobook?

I strongly advise against setting a public launch date until your audiobook is confirmed as live in the retail store. Because ACX does not guarantee a specific approval date, you risk missing your own deadline if the quality assurance review takes longer than expected.

Does cover art go through a separate review?

Yes, your cover art is reviewed independently of your audio files. This process can take up to 10 business days, so ensure your image meets the required dimensions and file specifications found on the ACX support pages to avoid unnecessary delays.

How do I know when my book is live?

You can monitor the status of your project in the Completed Projects section of your ACX account. Additionally, ACX will send you automated email status updates throughout the process, including the final notification that your title is available for sale.

Whether you are publishing audiobooks on Audible or going wide with another distributor, the wait is shortest when the files are right the first time. If you are planning your next audiobook, the Audie pricing page shows what it costs for a book of your length.