What Is Amazon KDP?
Amazon Kindle Direct Publishing (KDP) is Amazon's self-publishing platform. It lets anyone publish ebooks and paperbacks for sale on Amazon's global marketplaces - no agent, publisher, or upfront cost required.
KDP is the dominant platform for independent authors. It accounts for the majority of all ebook sales worldwide, and its Kindle Unlimited subscription service gives enrolled authors access to millions of active readers. The platform handles distribution, payment processing, and delivery. You handle the content, cover, and marketing.
Key facts:
- Cost: Free to use. Amazon takes a royalty cut per sale.
- Formats: Ebooks (Kindle) and paperback (print-on-demand).
- Reach: Available in 13 Amazon marketplaces worldwide.
- Speed: Books go live within 24-72 hours of submission.
- Control: You set the price, can update the manuscript anytime, and retain your copyright.
Setting Up Your KDP Account
- Go to kdp.amazon.com and sign in with your existing Amazon account (or create one).
- Complete your tax information. KDP requires a tax interview (W-9 for US residents, W-8BEN for international). This is required before you can receive royalties.
- Set up your bank account for royalty payments. You can add bank accounts in multiple currencies. Payments are made approximately 60 days after the end of each month.
- Choose your marketplace(s). You can publish in all Amazon marketplaces simultaneously or select specific ones.
The entire setup process takes 15-30 minutes. You will need your legal name (or business name), address, tax ID, and bank details.
Manuscript Formatting Requirements
Amazon accepts several file formats for ebook uploads. The quality of your formatting directly affects the reading experience on Kindle devices and apps.
Accepted file formats
- EPUB (recommended) - Produces the cleanest Kindle conversion. Most ebook creation tools export to EPUB.
- DOCX - Acceptable but may require manual formatting adjustments after upload. Styles, fonts, and formatting can shift during conversion.
- KPF - Kindle Create format. Amazon's own tool for formatting. Good for fixed-layout books (cookbooks, children's books).
- HTML - Advanced option. Gives you full control over formatting but requires technical knowledge.
Formatting essentials
- Use heading styles for chapter titles (H1 or H2). KDP uses these to build the automatic table of contents.
- Include a table of contents with hyperlinked entries. This is required by Amazon for ebooks over 10 pages.
- Use standard fonts. Kindle devices override custom fonts by default. Stick to serif or sans-serif families.
- Avoid fixed layouts for text-heavy books. Kindle readers expect to adjust font size and spacing. Reflowable content is essential for novels, non-fiction, and guides.
- Test on Kindle Previewer. Amazon provides a free Kindle Previewer tool that shows exactly how your book will look on different devices.
Creating KDP-ready files with Inkfluence AI
Inkfluence AI exports directly to EPUB and PDF with built-in table of contents, chapter numbering, copyright page, and proper heading structure. The EPUB output is designed for clean Kindle conversion - no manual reformatting needed. You can also toggle options like decorative elements, page numbers, and header/footer text before exporting.
Cover Requirements
Your cover is the single most important marketing asset for your ebook. On Amazon, readers scroll through thumbnail images - your cover needs to work at 200px wide on a mobile screen.
Technical specifications
- Minimum size: 1,000 x 625 pixels
- Recommended size: 2,560 x 1,600 pixels (height-to-width ratio of 1.6:1)
- Max file size: 50 MB
- Format: JPEG or TIFF
- Color mode: RGB (not CMYK)
- Resolution: 300 DPI minimum for crisp display
Design principles
- Title must be readable at thumbnail size. If you squint at your cover from arm's length, can you read the title? If not, increase font size or simplify the design.
- Match genre expectations. Romance covers look different from business books, which look different from thrillers. Browse the top 20 books in your category and note the visual patterns.
- Use high-contrast colors. Light text on dark backgrounds or bold text on clean backgrounds. Avoid busy patterns behind text.
- Keep it simple. One focal image, clear title, author name. Amateur covers try to include too many elements.
Cover creation options
Inkfluence AI includes a cover designer with three paths: AI-generated covers (Modern, Bold, and Minimal styles), a library of 100+ stock backgrounds organized by category, and direct upload for custom designs. You can customize text placement, fonts, colors, and add a logo or brand elements.
Title, Description, and Keywords
Your metadata is what Amazon uses to index, rank, and display your book. Getting this right is essential for discoverability.
Title and subtitle
Your title is the strongest ranking signal. Include your primary keyword naturally. Your subtitle should contain secondary keywords and promise a specific benefit. See our title and subtitle optimization guide for detailed best practices.
Book description
You have 4,000 characters. Use the first 300 characters to hook the reader (this is what shows before "Read more"). Structure it as: hook, problem, solution, bullet list of benefits, call to action. See the book description copywriting section for a detailed formula.
Backend keywords
Amazon gives you 7 keyword fields. Fill all 7 with unique phrases that are not already in your title or subtitle. Use spaces instead of commas. Focus on long-tail phrases with buyer intent. See our backend keywords guide for rules and examples.
Categories and Age Range
You can select 2-3 BISAC categories that determine where your book appears in Amazon's browse structure and which bestseller lists you can rank on.
Category strategy
- Choose the most specific category that accurately describes your book.
- Niche categories have less competition. Ranking #1 in a niche category earns you the orange "Best Seller" badge, which boosts visibility everywhere.
- Research competitors' categories by clicking their books and scrolling to "Product details".
- After publishing, you can email KDP support to request additional category placements.
Age and grade range
If your book is aimed at readers under 18, set the appropriate age and grade range. This is required for children's books and affects which search filters your book appears in. For adult non-fiction and fiction, leave these fields at their default (18+).
Pricing and Royalty Options
KDP offers two royalty options. Your choice depends on your pricing, distribution preferences, and strategy.
70% royalty option
- Available for ebooks priced between $2.99 and $9.99
- Delivery costs (based on file size) are deducted from your royalty
- Available in most Amazon marketplaces
- Price matching: Amazon may match a lower price if your ebook is found cheaper elsewhere
35% royalty option
- Available for any price from $0.99 to $200
- No delivery cost deduction
- Available in all Amazon marketplaces
- Required if your book is priced below $2.99 or above $9.99
Pricing strategy by category
- Short non-fiction guides (10,000-20,000 words): $2.99-$4.99
- Full-length non-fiction (30,000+ words): $4.99-$9.99
- Fiction novels: $2.99-$5.99
- Series first book: $0.99-$2.99 (lower entry point to hook readers into the series)
- Premium/specialized content: $9.99+ (drops to 35% royalty)
The sweet spot for most authors is $4.99 - high enough to signal quality, low enough for impulse purchases, and well within the 70% royalty range.
KDP Select and Kindle Unlimited
KDP Select is an optional program with significant trade-offs. Understanding them is critical before you enroll.
What you get
- Kindle Unlimited (KU) inclusion - Subscribers can read your book for free. You earn per page read (typically $0.004-$0.005 per page).
- Kindle Countdown Deals - Time-limited discounts with a countdown timer on your product page.
- Free Book Promotions - Make your book free for up to 5 days per 90-day enrollment period.
- Higher visibility - KU books appear in a dedicated "Read for Free" section, expanding your audience.
What it costs
- Exclusivity - Your ebook cannot be sold or distributed anywhere else (Apple Books, Kobo, your website, etc.) during enrollment.
- 90-day commitment - Auto-renews unless you opt out before the end of each period.
- Revenue cannibalization - Some readers who would have purchased your book will borrow it instead, which may earn less per reader.
When to enroll
KDP Select works best for: new authors building an audience, fiction series (the first book in KU drives read-through to later books), and niches where Kindle Unlimited readership is high (romance, sci-fi, mystery, self-help). It works less well for: authors with an established presence on other platforms, high-priced non-fiction, and books you want to use as lead magnets on your own website.
The Publishing Process
Once your manuscript, cover, and metadata are ready, the actual publishing process is straightforward:
- Log in to KDP and click "Create New Title" then "Kindle eBook".
- Enter your book details: language, title, subtitle, series info (if applicable), author name, description, keywords, and categories.
- Upload your manuscript. KDP will convert it and show you a preview. Check every chapter, the table of contents, images, and formatting.
- Upload your cover. Verify it displays correctly at thumbnail size.
- Set your rights and pricing. Choose your territories, royalty plan, and price for each marketplace.
- Review everything one final time. Check for typos in your description, verify pricing, and ensure your keywords are correct.
- Click "Publish Your Kindle eBook". Your book enters Amazon's review queue and will be live within 24-72 hours.
After publishing, you can make changes to any element at any time. Updates take 24-48 hours to reflect on the live listing.
Launch Strategy
The first 30 days after publishing are critical. Amazon's algorithm gives new books a temporary visibility boost. Make the most of it.
Pre-launch (1-2 weeks before)
- Build anticipation on social media or your email list. Share excerpts, cover reveals, or behind-the-scenes content.
- Set up a landing page on your website with a pre-order or launch notification signup.
- Reach out to potential reviewers, bloggers, or influencers in your niche.
- Prepare your book description, backend keywords, and categories in advance.
Launch week
- Concentrate sales in the first 48-72 hours. Amazon's algorithm weighs early sales velocity heavily. Ask your network to buy during the first 2-3 days.
- Send your email list a launch announcement with a direct link to the Amazon listing.
- Post across all social channels with a link and a clear call to action.
- If using KDP Select: Consider a Kindle Countdown Deal in week 2-3 to maintain momentum.
Post-launch (month 1-3)
- Follow up with readers to request reviews. Even 5-10 genuine reviews significantly improve conversion rates.
- Monitor your KDP reports for sales trends, page reads, and which keywords are driving traffic.
- Update your listing based on performance data. Swap underperforming keywords, test new description copy.
- Consider running Amazon Ads to maintain visibility as the new-book boost fades.
Common Mistakes
- Publishing before the manuscript is ready - Typos, formatting issues, and poor structure lead to bad reviews, which are nearly impossible to recover from. Proofread multiple times and use Kindle Previewer.
- Skipping the cover - A visibly amateur cover kills sales immediately. Invest in a professional cover or use a quality AI cover tool.
- Empty backend keyword fields - Every empty field is lost discoverability. Fill all 7 slots with unique, relevant phrases.
- Choosing the wrong royalty plan - Pricing at $1.99 with the 35% plan earns you $0.70 per sale. Moving to $2.99 with the 70% plan earns you $2.09 - triple the revenue for a $1 price increase.
- No launch plan - Publishing and hoping for the best does not work. Even a simple email + social media announcement dramatically increases first-week sales and rankings.
- Ignoring KDP reports - Your reports tell you what is working. Authors who review them monthly and adjust their listings outperform those who set and forget.
- Not testing on Kindle Previewer - What looks fine in Word or Google Docs may break on Kindle. Always preview before publishing.