Amazon KDP: Publish Low-Content Books for Passive Income
Amazon Kindle Direct Publishing (KDP) is one of the most accessible passive income opportunities. You create a book, upload it to Amazon, and Amazon handles printing, shipping, and customer service. You earn royalties on every sale. No inventory, no upfront costs.
What Is Amazon KDP?
KDP is Amazon's self-publishing platform. While most people associate it with ebooks and text-based books, the real opportunity for passive income is in "low-content" and "medium-content" books:
Low-content books:
- Notebooks and journals (lined pages)
- Blank sketchbooks
- Graph paper books
- Log books (workout logs, food diaries, reading logs)
- Guest books
Medium-content books:
- Planners (daily, weekly, monthly)
- Coloring books
- Activity books (puzzles, mazes, word searches)
- Prompt journals (gratitude, self-reflection, goal setting)
- Habit trackers
These books require minimal text. You create the interior template once, design a cover, and publish. Each book can sell for months or years with no additional work.
How Much Can You Earn?
KDP pays royalties of 60% of the list price minus printing costs. For a $7.99 notebook:
- List price: $7.99
- 60% royalty: $4.79
- Printing cost: ~$2.50
- Your royalty: ~$2.29 per sale
Realistic income expectations:
- One book selling 2 copies/day: $4.58/day ($1,380/year)
- Portfolio of 50 books averaging 1 copy/day each: $114/day ($41,610/year)
- Portfolio of 100+ books with mixed performance: $50-150/day
These are realistic ranges. Some books sell zero. A few become unexpected bestsellers. The key is volume and data-driven iteration.
Step 1: Research What Sells
Before creating any book, research demand and competition on Amazon.
Search Amazon for keywords: Type "gratitude journal" into Amazon's search bar. Note the auto-complete suggestions — these are real searches. Look at the bestsellers in each category.
Analyze the competition: For each book idea, check:
- BSR (Best Seller Rank): A BSR under 100,000 in Books means decent sales (5-20 copies/day). Under 50,000 means good sales.
- Number of reviews: Books with few reviews but low BSR are selling well with room for competition.
- Cover quality: If existing covers are poor, a better cover can win.
- Content quality: Read the "Look Inside" preview. If interiors are basic, you can do better.
Use KDP tools:
- Publisher Rocket ($97 one-time): Shows estimated sales, search volume, and competition data for any keyword
- Helium 10 (free tier): Keyword research for Amazon
- Amazon's own search auto-complete and bestseller lists
Find underserved niches: Instead of "notebook" (too competitive), target specific niches:
- "Bird watcher journal"
- "Pregnancy workout log"
- "Mushroom foraging notebook"
- "Cycling training journal"
- "Wine tasting log book"
Specific niches have less competition and more passionate buyers.
Step 2: Create the Book Interior
For low-content books, the interior is a repeating template. For medium-content books, it requires more design.
Tools for creating interiors:
Canva (free/$13/month): Best for beginners. Create page templates, duplicate pages, and export as PDF. Canva has templates for notebooks, planners, and journals.
Adobe InDesign ($21/month): Professional publishing tool. Better for complex layouts and large page counts. Steeper learning curve.
Google Sheets / Microsoft Excel: Create graph paper, lined paper, or log templates. Export as PDF.
Specialized tools:
- Tangent Templates ($59 one-time): Creates KDP interiors with one click
- Puzzle Maker tools for activity books (crosswords, word searches, mazes)
Interior specifications:
- Page count: 100-200 pages for most low-content books (too few = bad value perception; too many = high printing cost)
- Trim size: 6" x 9" (most popular for journals), 8.5" x 11" (for planners and workbooks), 5" x 8" (pocket notebooks)
- Bleed vs. no bleed: No bleed is simpler (content stays within margins). Bleed is for full-page images.
- PDF format: Export as a single PDF with all pages
Interior tips:
- Include a title page with the book title
- Add a "This book belongs to" page
- Number pages (optional but looks professional)
- Keep designs clean and functional — people buy these to use, not to admire
Step 3: Design the Cover
The cover is 80% of the battle. A great cover sells a mediocre interior. A bad cover kills a great interior.
Cover design principles:
- Clear title: Large, readable text that communicates the book's purpose
- Professional typography: Use quality fonts (not default Word fonts). Pair a display font with a clean body font.
- Relevant imagery: Use illustrations, patterns, or photography that fits the niche
- Color psychology: Different colors evoke different emotions. Blue for calm, orange for energy, green for nature
- Stand out from competitors: Look at competing books. Your cover should be visually distinct.
Tools for cover design:
- Canva: Best for beginners. Many KDP cover templates available.
- Adobe Photoshop: More control for experienced designers.
- KDP Cover Calculator: Amazon's tool for calculating cover dimensions based on page count.
Cover specifications: KDP provides a Cover Calculator that gives exact dimensions based on your trim size and page count. The cover must be a single PDF with front, spine, and back cover in one file.
For low-content books, the spine is usually too thin for text. Design without spine text.
Step 4: Publish on KDP
Create a KDP account: Go to kdp.amazon.com and sign in with your Amazon account. Complete the tax and payment information.
Enter book details:
- Title and subtitle (include keywords naturally)
- Author name (use a pen name if you prefer)
- Description (write compelling copy — this is your sales page)
- Keywords (7 keyword fields — choose carefully based on research)
- Categories (choose 2-3 relevant categories)
Upload files:
- Manuscript (interior PDF)
- Cover (cover PDF)
- Preview using KDP's online previewer (check for formatting issues)
Set pricing:
- Check competing books' prices
- Price similarly or slightly lower when starting
- Royalty calculator shows your earnings at each price point
- Do not underprice too much (devalues the product)
Publish: Click publish. Amazon reviews the book (usually 24-72 hours) before it goes live.
Step 5: Optimize for Amazon Search
Amazon is a search engine. Like Google SEO, ranking on Amazon requires optimization.
Title optimization: Include the primary keyword naturally. "Gratitude Journal for Women: 90-Day Mindfulness and Self-Reflection Diary"
Subtitle optimization: Include secondary keywords. "A Daily Journal for Gratitude, Happiness, and Personal Growth"
Backend keywords: Use all 7 keyword fields with relevant terms people might search.
Description optimization: Write compelling copy that sells the benefits. Use formatting (bolding, bullet points) for readability. Include what the book contains (number of pages, page format, special features).
A+ Content (enhanced description): If you enroll in KDP Select or have a registered brand, you can add enhanced visual content to your product description. This increases conversion rates by 5-15%.
Step 6: Get Reviews (Legally)
Reviews are critical for Amazon sales. Books with no reviews do not convert. Books with 20+ reviews sell much better.
Legal ways to get reviews:
- Amazon Vine: KDP books enrolled in KDP Select are eligible for Amazon Vine, where Amazon sends free copies to trusted reviewers in exchange for honest reviews.
- Reader review teams: Build an email list of readers. Offer free review copies in exchange for honest reviews.
- Social media: Share your book with relevant communities. Ask readers to leave reviews.
Do NOT do:
- Never pay for reviews. Amazon bans accounts that buy reviews.
- Never review your own book or ask family members to review it. Amazon detects and removes these.
- Never offer incentives for positive reviews (only for honest reviews).
Scaling Your KDP Business
Publish consistently: Volume is key. Publish 2-4 books per month. Over a year, you build a portfolio of 24-48 books. Some will be duds. A few will be winners. The winners subsidize the duds.
Use data to iterate: After publishing 20+ books, analyze which sell and which do not. Double down on winning niches. Create variations of successful books (different sizes, designs, or sub-niches).
Create series: If "Gratitude Journal for Women" sells well, create "Gratitude Journal for Teens," "Gratitude Journal for Men," "Gratitude Journal for Mothers," etc. Each targets a specific audience.
Expand formats: Offer the same book in different sizes (6x9 and 8.5x11). Offer paperback and hardcover (KDP now supports hardcover). Some buyers prefer specific formats.
Outsource production: Once profitable, hire designers on Fiverr or Upwork to create covers and interiors. Your job shifts from creation to research, quality control, and publishing strategy.
Common KDP Mistakes
1. Publishing without research. Creating books nobody searches for. Always verify demand before investing time.
2. Poor covers. Amateur covers kill sales. Invest in professional cover design (or learn design principles yourself).
3. Too competitive niches. "Lined notebook" has thousands of competitors. Choose specific niches with less competition.
4. Copying existing books. Do not replicate other books' interiors or covers exactly. Create original designs.
5. Expecting instant results. Books take time to gain traction. Give each book 3-6 months before judging its performance.
Amazon KDP is a real passive income opportunity. It requires upfront work (research, design, publishing) but generates income for years with no ongoing maintenance. Start with 10 books in specific niches. Learn from the data. Scale what works. Over 12-24 months, a KDP portfolio can generate $1,000-5,000+/month in passive royalties.