Amazon KDP Ebook Delivery Fees Explained: How File Size Cuts Your 70% Royalties
Unpack how Amazon $0.15/MB ebook delivery fee silently erodes your 70% royalty on image-rich books, and practical image compression steps to maximize author profit.
Eleanor Vance
Head of Digital Production
"When selecting the 70% royalty tier on Amazon KDP, many indie authors assume they will receive a clean seventy cents on every dollar. However, opening their monthly royalty statements often reveals unexpected deductions. The culprit is Amazon digital delivery fee—a bandwidth deduction calculated against the final file size of your ebook. For text-heavy fiction, the fee is negligible; for illustrated children books, graphic nonfiction, or cookbooks, it can decimate your profit margins."
Core Key Takeaways
- How KDP Delivery Fees Work: The 70% vs. 35% Royalty Mechanism
- The Bandwidth Math: $0.15 Per Megabyte in the United States
- When the 35% Royalty Option Actually Beats 70%
- Step-by-Step Ebook File Compression Strategies
- Auditing Delivery Fees on the KDP Pricing Dashboard
This article is part of our comprehensive guide to Amazon KDP publishing.
1. How KDP Delivery Fees Work: The 70% vs. 35% Royalty Mechanism
Amazon provides two royalty tiers for Kindle ebooks: 35% and 70%. While 70% sounds universally superior, it comes with a strict contractual catch: Amazon deducts a digital delivery charge based on the compressed file size delivered to customer devices. The 35% tier, by contrast, has zero delivery deductions regardless of file weight.
- 70% Royalty Tier: Author receives 70% of list price minus the per-unit digital delivery fee (priced between $2.99 and $9.99).
- 35% Royalty Tier: Author receives a flat 35% of list price with zero delivery fee deducted (applicable to any price point $0.99 to $200.00).
- File Size Calculation: Delivery fees are assessed on the final mobi/kpf/epub file size after Amazon server-side compression.
2. The Bandwidth Math: $0.15 Per Megabyte in the United States
In the US marketplace, Amazon assesses a delivery fee of $0.15 per megabyte (MB). Similar bandwidth rates apply across international Amazon marketplaces (e.g., £0.10/MB in the UK, €0.12/MB in the EU, CAD $0.15/MB in Canada). While a 1 MB text novel incurs a negligible $0.15 fee, a 20 MB illustrated guide incurs a $3.00 deduction per purchase.
- 1 MB Novel ($4.99 list price): ($4.99 × 0.70) − $0.15 = $3.34 royalty (67% effective rate).
- 10 MB Book ($4.99 list price): ($4.99 × 0.70) − $1.50 = $1.99 royalty (40% effective rate).
- 20 MB Book ($4.99 list price): ($4.99 × 0.70) − $3.00 = $0.49 royalty (10% effective rate).
3. When the 35% Royalty Option Actually Beats 70%
There is a mathematical crossover point where choosing the 35% royalty tier yields substantially higher net royalties than the 70% tier. For image-heavy cookbooks, children books, photography portfolios, and academic textbooks with dozens of high-resolution diagrams, opting for 35% avoids punitive bandwidth cuts.
- Real-World Example: A 25 MB children book listed at $4.99.
- Under 70% Tier: ($4.99 × 0.70) − $3.75 delivery fee = $0.00 (or negative threshold covered by minimum floor).
- Under 35% Tier: $4.99 × 0.35 = $1.75 net royalty per sale.
- Decision Threshold: Whenever delivery fees exceed 35% of list price, switch royalty models immediately.
4. Step-by-Step Ebook File Compression Strategies
You do not have to sacrifice image clarity to maintain minimal file sizes. Professional ebook formatters employ systematic asset compression workflows that optimize pixel density specifically for Kindle screens (which rarely benefit from image resolutions exceeding 1800 to 2400 pixels on their longest edge).
- Target Dimensions: Downscale full-page images to 1600 × 2560 pixels at 72–150 DPI; print 300 DPI resolutions are wasted in digital files.
- JPEG Optimization: Compress color images using 80–85% JPEG quality to strip metadata and reduce file weight by up to 70% with zero visible artifacting.
- Purge Redundant Fonts: Strip embedded heavy OTF/TTF fonts if standard system fonts (serif/sans-serif) suffice.
- SVG for Diagrams: Use scalable vector graphics (SVG) for charts and clean logos rather than heavy rasterized PNGs.
5. Auditing Delivery Fees on the KDP Pricing Dashboard
Never hit publish without inspecting the KDP pricing dashboard. On the "Kindle eBook Pricing" tab, Amazon automatically calculates and displays the exact delivery fee for your uploaded file in the royalty estimation table. Check each international marketplace to confirm your margins remain strong globally.
- Verify Dashboard Calculations: Review the "Delivery" column next to the 70% royalty radio button.
- Test EPUB Compressions: If the fee is too high, re-upload an optimized EPUB before publishing.
- Pre-Order Safety: Remember that delivery fees lock in on the file submitted at final pre-order deadline.
The Takeaway
Ebook delivery fees can silently drain thousands of dollars in royalties from an author earnings if file sizes are left unoptimized. By adopting disciplined digital typesetting, compressing raster images, and strategically evaluating the 35% vs. 70% tiers, authors can keep the royalties they deserve. Contact Golden Ivory Publishing for professional book formatting that balances stunning visual fidelity with lightweight, profitable digital file architectures.
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