KDP vs IngramSpark vs D2D: Platforms Compared

Amazon KDP dominates ebook sales with roughly 70% of the U.S. market, but it is not the only game. Going wide across multiple platforms, Apple Books, Kobo, Barnes & Noble, Google Play, can build a more resilient income stream and reach readers who never shop on Amazon.

The question is not which platform is "best." It is which combination matches your genre, goals, and willingness to manage multiple dashboards. Here is a clear comparison of every platform that matters in 2026.

The Big Three: KDP, IngramSpark, and Draft2Digital

Amazon KDP (Kindle Direct Publishing)

KDP is where most indie authors start and where the majority of ebook revenue flows. It offers two distinct programs:

KDP Standard (non-exclusive):

• Sell your ebook on Amazon alongside other platforms
• 35% or 70% royalty based on price point
• No enrollment period, come and go freely
• Access to Amazon Ads

KDP Select (exclusive):

• Your ebook is only available on Amazon
• Enrolled in Kindle Unlimited (KU), readers borrow your book for a flat subscription fee
• You earn per page read (~$0.0045 per page in early 2026, paid from the KU global fund)
• Access to promotional tools: Countdown Deals, Free Book promotions
• 90-day enrollment periods (auto-renews unless you opt out)
• Cannot sell or distribute ebook anywhere else during enrollment

KDP Print:

• Print-on-demand paperbacks and hardcovers
• No upfront costs, Amazon prints when a customer orders
• Royalty = list price - printing cost - Amazon's 40% cut (Amazon channels) or 60% cut (expanded distribution)
• Available alongside ebook regardless of KDP Select enrollment

IngramSpark

IngramSpark is the indie author's gateway to bookstores, libraries, and global distribution. It is primarily a print distribution platform, though it handles ebooks too.

Key features:

• Print-on-demand with distribution to 40,000+ retailers and libraries worldwide
• Ebook distribution to major retailers
• Industry-standard print quality (same presses used by traditional publishers)
• Returnability option (required for most bookstore stocking)
• Publisher-grade metadata management

Costs:

• Title setup: Free (reduced from $49 in 2024)
• Ebook distribution: Free
• Print: Printing cost per unit varies by trim size, page count, and color
• File revision: $25 per revision

Draft2Digital (D2D)

Draft2Digital is the easiest way to distribute to multiple platforms from a single dashboard. They act as an aggregator, you upload once and they distribute to:

• Apple Books
• Barnes & Noble (Nook)
• Kobo
• Tolino (Germany's largest ebook platform)
• OverDrive (library distribution)
• Vivlio, BorrowBox, and more
• Amazon (recent addition)

Key features:

• No upfront costs
• 10% commission on top of retailer royalty (so you earn the retailer's royalty minus 10%)
• Free formatting tools (EPUB and print)
• Universal Book Links (books2read.com) for marketing
• Print distribution via D2D Print
• Author payment splitting for co-authored works

Platform Comparison Table

Direct Retailer Platforms

You can also upload directly to individual retailers instead of using an aggregator. This earns you a higher royalty (no aggregator commission) but requires managing multiple dashboards.

Apple Books (via Apple Books for Authors)

• 70% royalty on all price points (no minimum)
• Strong in English-speaking markets outside the U.S.
• Particularly popular with iOS/Mac readers
• Direct upload or via D2D/Smashwords
• Pre-order support up to 1 year in advance
• Apple's price-matching can trigger Amazon price drops

Kobo Writing Life

• 70% royalty for books $2.99-$12.99; 45% otherwise
• Strong in Canada, Australia, and European markets
• Kobo Plus (subscription service) pays per page read
• Excellent promotional tools (Kobo Deals, merchandising)
• Direct upload or via D2D
• Growing market share, 15% of global ebook sales

Barnes & Noble Press

• 65% royalty for ebooks $2.99+; 40% below $2.99
• U.S.-focused market
• Nook device and app ecosystem
• Print-on-demand available
• Direct upload or via D2D

Google Play Books

• 70% royalty (52% in some territories)
• Massive global reach via Android devices
• Often underestimated, significant sales for nonfiction
• Aggressive discounting can trigger Amazon price-matching
• Direct upload only (no aggregator option for new accounts currently)

KDP Select vs. Going Wide: The Real Decision

This is the most debated question in indie publishing. Here is when each strategy makes sense.

Choose KDP Select When:

1. You write in KU-heavy genres. Romance, LitRPG, thriller, military sci-fi, and paranormal romance have massive KU readerships. In these genres, 50-70% of indie revenue comes from page reads.

2. You are launching your first book. KDP Select gives you access to promotional tools (Countdown Deals, Free Book promos) and KU page reads that can accelerate your initial visibility.

3. You want simplicity. One dashboard, one payment, one algorithm to learn. Going wide requires managing multiple platforms and understanding different promotional ecosystems.

4. Your book is short to medium length. KU pays per page read. A 300-page novel can earn $1.35 per full read-through, which adds up at volume. But a 600-page epic fantasy might earn more per reader from a direct sale at $5.99.

Choose Going Wide When:

1. You write nonfiction. Business, self-help, and reference books sell well on Apple Books and Google Play. KU readership for nonfiction is low.

2. You write literary fiction or upmarket genres. These readers buy on multiple platforms and are less likely to be KU subscribers.

3. You want income diversification. Being 100% dependent on Amazon means one algorithm change or account issue can wipe out your income overnight. Wide authors spread that risk.

4. You have an established audience. If readers already know your name, they will follow you to any platform. You do not need KU's discovery mechanism.

5. You want to reach international markets. Kobo dominates in Canada, Tolino in Germany, and Apple Books has strong penetration in the UK and Australia.

The Hybrid Approach

Many authors use a hybrid strategy:

• Series 1: Enrolled in KDP Select (KU-heavy genre, romance)
• Series 2: Wide distribution (different genre or audience)
• Backlist: Moved wide after KDP Select performance plateaus

You can also test KDP Select for 90 days, evaluate your KU page-read income, and go wide if the numbers do not justify exclusivity.

Print Distribution: Where It Gets Complicated

Ebook distribution is relatively simple, you are dealing with digital files and instant delivery. Print distribution involves physical logistics, and the two major options serve different purposes.

KDP Print vs. IngramSpark for Print

The recommended approach: Use both. Publish print via KDP for Amazon sales (highest royalty) and via IngramSpark for bookstore and library distribution. This requires purchasing your own ISBN (Bowker, $125 for one or $295 for ten) so you can use the same ISBN on both platforms.

EPUB Quality Matters for Distribution

Every platform ingests your EPUB file and converts it for their ecosystem. Amazon converts to KPF, Apple renders directly from EPUB, Kobo uses KEPUB. The cleaner your source EPUB, the better it looks everywhere.

Common issues that cause problems across platforms:

• Broken heading hierarchy, Chapter titles not properly tagged as headings
• Missing navigation, Table of contents not linked or absent
• Accessibility metadata gaps, Missing language declaration, alt text, or accessibility summary
• Invalid EPUB structure, Malformed XML, missing required files

Amazon is particularly aggressive about accessibility. Books with structural problems can be suppressed from search results without notification. But all platforms benefit from a clean, accessible EPUB.

Before distributing anywhere, run your EPUB through Rahatt to catch and fix these issues automatically. It takes seconds and prevents distribution headaches across every platform. For a deeper understanding of what makes an EPUB accessible, see our EPUB accessibility guide.

Choosing Your Distribution Strategy

Here is a decision framework:

If you are a first-time fiction author: Start with KDP Select for your first 90-day term. Evaluate your KU page reads. If KU income is more than 40% of your total, stay exclusive. If not, go wide on your next renewal.

If you write nonfiction: Go wide from day one. Use D2D for ebook distribution to Apple, Kobo, and B&N. Use KDP for Amazon ebook and print. Use IngramSpark for bookstore and library print.

If you are building a long-term catalog: Start building your wide presence early, even if revenue is initially lower. Each platform's algorithm rewards consistency and backlist depth. Authors who go wide with 10+ books often earn more total than they would on KDP Select.

If you want maximum simplicity: KDP for everything (ebook + print). Add IngramSpark for print when you want bookstore/library reach. This is the minimum-viable distribution strategy.

FAQ

Can I use KDP and IngramSpark at the same time?

Yes, and many authors do. Use KDP for Amazon ebook and print sales, and IngramSpark for bookstore, library, and international print distribution. For ebooks, you should only list on one platform per retailer to avoid duplicate listings. If you use D2D to distribute to Apple and Kobo, do not also list directly on those platforms.

What is the best aggregator in 2026?

Draft2Digital is the most author-friendly aggregator with the best dashboard, free formatting tools, and competitive reach. They also recently added Amazon distribution, so you can theoretically use D2D as your single upload point for everything. However, most authors still upload directly to KDP for maximum control and slightly higher royalties.

How long does it take to get listed on each platform?

KDP publishes within 24-72 hours. Apple Books takes 24-48 hours. Kobo is usually 24-72 hours. IngramSpark takes 5-10 business days for initial setup. D2D distributes within 1-5 business days depending on the retailer. Plan your launch dates accordingly, upload to slower platforms first.

Should I use D2D's free ISBNs?

D2D provides free ISBNs, but they list D2D as the publisher of record. If you want your own imprint name, buy from Bowker. For most indie authors, D2D's free ISBNs are perfectly fine for ebooks. For print books aimed at bookstores, your own ISBN with your imprint name looks more professional.

What happens if Amazon price-matches my book?

If Amazon finds your book cheaper on another platform (like a $0.00 permafree on Apple Books), they will match that price. You will earn 35% royalty on the matched price (or $0 if matched to free). This is actually a common strategy, make book one free on Apple/Kobo, Amazon matches to free, you gain Amazon readers who buy books 2+ at full price.

For a broader view of the self-publishing process, see our complete self-publishing guide. For pricing strategies on each platform, check out our ebook pricing guide.