KDP Free Promotions: How to Turn Free Downloads into Lasting Sales
Used strategically, KDP free days and Countdown Deals can spike your Amazon rank, build your reviewer base, and kick-start word-of-mouth. Used poorly, they're wasted.
A KDP free book promotion is a 1–5 day window, available through KDP Select, where your ebook lists at $0.00 on Amazon. It is one of two KDP Select promotional tools, the other being the Countdown Deal, and authors use it to spike downloads, climb Amazon's free bestseller lists, and build a reviewer base without spending on ads.
Free Days vs. Countdown Deals
Both tools require KDP Select enrollment, but they serve different goals. Picking the wrong one for your situation is one of the most common KDP promotion mistakes.
| Feature | Free Days | Countdown Deal |
|---|---|---|
| Price during promo | $0.00 | Starts at $0.99 |
| Royalties earned | $0 | 70% on reduced price |
| Best goal | Downloads + rank boost | Revenue + visibility |
| How to qualify | KDP Select enrollment | KDP Select, original price ≥ $2.99 |
| Duration | 1–5 days per 90-day period | Max 7 days per 90-day period |
| Best for | New series books, backlist | Existing audience, existing reviews |
When Free Days Work Best
Free promotions are not universally effective. The conditions below determine whether your free days will generate meaningful results.
Book 1 of a series — give book 1 free, sell books 2–3 at full price
You have at least 10+ existing reviews (otherwise free doesn't convert to follow-on sales)
You're promoting on promo sites simultaneously (BookBub, Freebooksy, ManyBooks, etc.)
You have a follow-up email sequence ready to capture new readers
Your book cover is professional and matches your genre
Standalone books with no series (limited upside — no read-through to capture)
Books with fewer than 5 reviews — browsers skip unreviewed books even when free
The 3-Day Free Promotion Playbook
A free promotion without a plan is just giving books away. Here's the timeline that maximises downloads, reviews, and post-promo sales.
Submit to free book promo sites
BookBub Featured Deal (most impactful but competitive), Freebooksy, ManyBooks, Robin Reads, Fussy Librarian. Most sites require 1–2 weeks lead time — submit early.
Email your list
Send a short announcement to your mailing list: "My book [Title] goes free on [Date]. Grab it here + please share." Warm audiences convert much better than cold promo site traffic.
Go live on social and communities
Post on social media, relevant genre Facebook groups, and Reddit communities like r/FreeEBOOKS and genre-specific subreddits. Time posts for morning (when readers are active).
Monitor your rank
Aim for the top 100 in your specific category. Track your free bestseller list ranking hourly on the first day. If rank is stalling, post to more communities or send a reminder email.
Book returns to full price
Email your list: "Back to full price — if you grabbed a free copy, I'd love your honest review on Amazon." Include a direct link to your Amazon review page to remove friction.
Follow up with committed readers
If you're using iWrity's ARC pipeline, follow up with readers who downloaded during your promo. See our guide to building an ARC team for how to convert readers into committed reviewers at a much higher rate than cold promo downloads.
How to Convert Free Downloaders into Reviewers
Free books get thousands of downloads but very few reviews. The average organic review rate from free promotions is just 0.5–2%. Here's why — and how to fix it.
Put a prominent review request at the END of your ebook
Not the beginning — readers skip front matter. A well-placed 'Enjoyed this? Please leave a review' page at the very end of your ebook, directly after the story concludes, is the highest-converting placement. Include the direct URL to your Amazon review page.
Link directly to your Amazon review page
Don't send readers to your book's main Amazon page and expect them to find the review button. Use the direct review link (amazon.com/review/create-review/?asin=YOURBOOK) to eliminate friction. Every extra click you require loses you reviewers.
Use iWrity for pre-committed readers
Random free downloaders are anonymous and under no commitment to review. iWrity connects you with readers who are explicitly pre-matched to your book and have agreed to read and leave an honest Amazon review. The conversion difference is significant.
Countdown Deal Best Practices
When used well, Countdown Deals let you generate real revenue from a promotional period rather than giving your book away at zero.
Start at $0.99 and increase daily
Set the deal to begin at $0.99 and step up in price each day (e.g., $0.99 → $1.99 → $2.99 → full price). The visible price increase creates genuine urgency — readers can see the timer and the next price on your Amazon page.
Use the full 7 days for maximum visibility
Amazon displays a "Countdown Deal" badge on your book page for the duration. A 7-day deal gives you the maximum window for that badge to generate organic clicks. Shorter deals give you less time to appear in promotional slots.
Countdown Deals only earn 70% royalty in US and UK stores
The 70% royalty on discounted prices is exclusively available for Countdown Deals in the US and UK Amazon stores. In other marketplaces (DE, FR, JP, etc.), Countdown Deals pay the standard 35% royalty on prices below $2.99.
Best combined with a new release or boxed set promotion
Countdown Deals work best when you have something new to announce. Run a deal on book 1 or 2 of your series when book 3 launches — the deal drives readthrough to the new book and maximises the launch period's overall revenue.
Want the full picture on KDP Select tools and enrollment?
Read the KDP Select Pros & Cons GuideHow Many Downloads Is a Good KDP Free Promotion?
A few hundred downloads over the promo period is a realistic result for a book with no existing audience and no promo-site placements. A few thousand is a strong result and usually means at least one paid promo site picked up your listing. Download count alone does not predict the post-promo sales bump; a smaller, engaged audience often converts better than a large anonymous one.
What matters more than the raw number is where the downloads came from. Downloads driven by a promo site with genre-matched subscribers (romance readers finding a romance free day, for example) convert to reviews and follow-on sales at a much higher rate than downloads from a generic free-books forum. Track your top-performing free days against which promo sites you used, and repeat the ones that produced reviews, not just numbers.
What Is the Best Day to Start a KDP Free Promotion?
Start on a Sunday or Monday so your promotion is live for the full working week, when most promo sites publish their daily free-book roundups. Avoid starting on a Friday, since weekend email opens and social reach both drop, and you lose the momentum a strong first-day rank needs to appear on Amazon's free bestseller lists.
If you're running a 5-day promotion, a Sunday start gives you two full weekend days at the tail end, which can catch a second wave of casual browsers. If you're running a shorter 2 or 3-day promotion, Monday to Wednesday is usually stronger, since it sits fully inside the window most promo sites and reader newsletters send during.
Common KDP Free Promotion Mistakes That Waste Your 5 Days
Running free days with zero reviews
Amazon shoppers, even on free books, skip listings with no reviews. Get at least a handful of reviews before spending your limited 90-day allotment of free days, or you'll give away copies to readers who never open the book.
Not submitting to promo sites early enough
BookBub, Freebooksy, and similar sites need 1-2 weeks lead time and reject last-minute submissions outright. Submitting the week of your promotion, instead of two weeks before, is the single most common reason a free run underperforms.
Running free days on your only book
Free promotion works by giving away book 1 to sell books 2 and 3. On a standalone title with nothing to read through to, you're left with downloads and no revenue path. Compare this against a stronger keyword and category setup for the book instead, which keeps working long after the 5 free days are gone.
Ignoring Kindle Unlimited page reads
KDP Select enrollment (required for free days) also pays you per page read through Kindle Unlimited. Authors who focus only on free-day downloads and ignore what actually drives Kindle Unlimited ranking leave a recurring revenue stream on the table.
Frequently Asked Questions
How many free books can I give away with KDP?+
KDP Select gives you 5 free promotion days per 90-day enrollment period. You can use all 5 days consecutively or split them across the period. You cannot exceed 5 free days per enrollment period.
Do free downloads count toward Amazon sales rank?+
Free downloads count toward the separate free book ranking, not your paid sales rank. After your promotion ends, the visibility from a high free ranking can temporarily lift your paid rank — usually for 1–7 days, depending on download volume and how well you promoted.
Which is better: free days or Countdown Deal?+
Free days maximise download volume and rank visibility — best for series book 1 or growing your reader base. Countdown Deals generate actual revenue while creating urgency — best when you already have an audience and reviews. If you have fewer than 10 reviews, free days are usually more effective.
How long after a free promotion should I expect a sales boost?+
The post-promo sales bump typically lasts 1–7 days. The strength depends on how many downloads you received, how well-promoted your free run was, and your genre. Authors who email their list and post on promo sites during free days tend to see a stronger bounce-back than those who run free days without active promotion.
Can I run KDP free promotion on the same book every 90 days?+
Yes. Each 90-day KDP Select enrollment period comes with 5 new free promotion days. As long as your book remains enrolled, you can run a free promotion every 90 days. Many series authors run a recurring free promotion on book 1 to continuously feed their series funnel.
How many downloads is a good KDP free promotion?+
A few hundred downloads is realistic with no promo-site placements. A few thousand usually means a paid promo site picked up your listing. Download count alone does not predict the post-promo sales bump; a smaller, engaged audience often converts better than a large anonymous one.
What is the best day to start a KDP free promotion?+
Sunday or Monday, so your run is live for the full working week when most promo sites publish their daily free-book roundups. Avoid Friday starts, since weekend email opens and social reach both drop off.
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