How to Self-Publish on IngramSpark vs. KDP: What's the Difference?

If you are self-publishing a book, you have almost certainly encountered two names: Amazon KDP (Kindle Direct Publishing) and IngramSpark. These are the two dominant platforms for self-published authors, and choosing between them — or deciding to use both — is one of the most important decisions you will make.

Both platforms offer print-on-demand and digital distribution, but they work very differently under the hood. In this guide, we will compare them across every dimension that matters: cost, distribution, quality, royalties, and strategy.

What Is Amazon KDP?

Amazon KDP is Amazon's self-publishing platform. Originally launched for eBooks (as Kindle Direct Publishing), it now also offers print-on-demand paperbacks and hardcovers. KDP is free to use — there are no setup fees, and Amazon handles printing, shipping, and customer service.

Key facts about KDP:

• Cost to publish: Free. No setup fees, no annual fees.
• Formats: eBook (Kindle), paperback, hardcover
• Distribution: Primarily Amazon.com and international Amazon marketplaces
• Royalties: 70% for eBooks ($2.99-$9.99), 60% minus printing costs for print
• Speed: Books can go live within 24-72 hours
• Expanded Distribution: KDP offers an "Expanded Distribution" option that makes your print book available to other retailers, but the terms are less favorable than IngramSpark

What Is IngramSpark?

IngramSpark is the self-publishing division of Ingram Content Group, the largest book distributor in the world. Ingram supplies books to over 40,000 retailers, libraries, and online stores globally — including Barnes & Noble, independent bookstores, Amazon, and library systems.

Key facts about IngramSpark:

• Cost to publish: Setup fees apply (though they frequently offer promotional free setup periods). Annual fees may apply for maintaining titles.
• Formats: eBook, paperback, hardcover (including dust jacket hardcovers)
• Distribution: Global distribution to 40,000+ retailers, libraries, and wholesalers
• Royalties: Based on your list price minus print cost and wholesale discount (you set the discount)
• Speed: Books typically take 5-10 business days to become available after approval
• Returnability: You can set your book as returnable — critical for bookstore placement

Distribution: The Biggest Difference

This is where the two platforms diverge most significantly. KDP's primary distribution channel is Amazon. While KDP's Expanded Distribution program technically makes your book available to other retailers, the reality is that most bookstores and libraries will not order through Amazon's distribution channels.

IngramSpark, on the other hand, is the industry standard for book distribution. When a bookstore wants to order a book, they go to Ingram. When a library wants to add a title to their collection, they check Ingram. When an online retailer other than Amazon wants to stock a book, they look in Ingram's catalog.

If you want your book in libraries, independent bookstores, or Barnes & Noble, IngramSpark is essential. KDP alone will not get you there.

Print Quality

Both platforms produce good-quality print-on-demand books, but there are differences:

• KDP: Print quality is generally solid for paperbacks. Hardcovers are case laminate only (no dust jackets). Color printing options are available but limited.
• IngramSpark: Offers more trim size options, paper types (including premium color on various stocks), and hardcover with dust jacket options. Generally considered to have a slight edge in overall print quality.

For most fiction and standard nonfiction, the quality difference is minimal. For photo books, art books, or titles where print quality is a major selling point, IngramSpark's wider range of options gives it an advantage.

Cost Comparison

Setup Costs

• KDP: Completely free to set up and publish
• IngramSpark: Charges setup fees per title (currently around $49 per title, though they frequently run promotions offering free setup). Title revisions may also incur fees.

Printing Costs

Printing costs per unit are generally comparable between the two platforms, though they vary by trim size, page count, and paper type. KDP tends to be slightly cheaper for standard black-and-white paperbacks, while IngramSpark may be more competitive for certain specialty formats.

The Hidden Cost of KDP Expanded Distribution

If you use KDP's Expanded Distribution, your royalty rate drops significantly — to 40% of list price minus printing costs. This makes your per-sale earnings through non-Amazon channels much lower than what you would earn through IngramSpark with a standard wholesale discount.

Royalties and Pricing

Comparing royalties between KDP and IngramSpark requires understanding their different models:

KDP eBook: 70% royalty on books priced $2.99-$9.99 (35% outside that range). Delivery fees apply based on file size.

KDP Print: 60% of list price minus printing cost for Amazon sales. 40% minus printing cost for Expanded Distribution sales.

IngramSpark: Your royalty = List Price - Print Cost - (List Price × Wholesale Discount%). You set the wholesale discount, typically 40-55%. At a 55% discount (industry standard for bookstore placement), your per-unit royalty is lower than KDP's Amazon royalty, but you gain access to a vastly wider distribution network.

The key insight: KDP pays more per sale on Amazon, but IngramSpark opens up sales channels that KDP cannot reach.

The Dual-Platform Strategy

Here is what most experienced self-published authors recommend: use both platforms.

• Use KDP for: eBooks (Kindle is the dominant eBook platform) and Amazon print sales (higher royalty on Amazon-direct sales)
• Use IngramSpark for: Print distribution to bookstores, libraries, and non-Amazon retailers

This dual approach gives you the best of both worlds: maximum Amazon earnings plus wide retail and library distribution.

How to Avoid Conflicts

When using both platforms for print, follow these rules:

• Use different ISBNs for your KDP print edition and your IngramSpark print edition — or use IngramSpark only for print and KDP only for eBooks
• Set your prices consistently across platforms to avoid retailer conflicts
• If using both for the same format, turn off KDP Expanded Distribution to avoid competing with your own IngramSpark listing

Many authors simplify by using KDP exclusively for eBooks and IngramSpark exclusively for all print editions. This clean separation avoids potential listing conflicts and maximizes the strengths of each platform.

Bookstore and Library Access

If getting your book into physical bookstores and hosting book signing events matters to you, IngramSpark is non-negotiable. Here is why:

• Returnability: IngramSpark lets you set your book as returnable. Bookstores operate on a returns-based model and will not stock non-returnable books.
• Wholesale discount: IngramSpark lets you set the wholesale discount that bookstores expect (40-55%). KDP does not give you this control.
• Catalog presence: Bookstores and libraries browse the Ingram catalog to find new titles. Your IngramSpark book appears alongside traditionally published titles.

According to Jane Friedman, one of the publishing industry's most trusted experts, IngramSpark is the clear choice for any author who wants distribution beyond Amazon.

eBook Distribution

For eBooks, the landscape looks different:

• KDP: Distributes to Amazon Kindle only. If you enroll in KDP Select (which requires exclusivity), you get access to Kindle Unlimited and promotional tools.
• IngramSpark: Distributes eBooks to Apple Books, Barnes & Noble Nook, Kobo, and other platforms — but not Amazon Kindle.

If you want maximum eBook reach, you need KDP for Kindle plus either IngramSpark or a distributor like Draft2Digital for other eBook platforms.

Customer Support and User Experience

• KDP: Generally user-friendly interface. Dashboard is intuitive, and publishing is straightforward. Customer support can be hit-or-miss but is accessible.
• IngramSpark: The platform has a steeper learning curve. File specifications are stricter, and setup requires more technical knowledge. Customer support has improved significantly but can still be slow during peak periods.

First-time authors often find KDP easier to navigate, while IngramSpark rewards authors who take the time to learn its system properly.

Which Platform Should You Choose?

Here is a decision framework:

• Choose KDP only if: You are publishing eBooks exclusively, you only care about Amazon sales, or you are testing the market with a minimal budget.
• Choose IngramSpark only if: You are focused on print distribution to bookstores and libraries and plan to sell eBooks through other channels.
• Choose both if: You want to maximize both your Amazon earnings and your retail/library distribution. This is the recommended approach for serious self-published authors.

The Role of Reviews on Both Platforms

Regardless of which platform you choose, reviews drive sales. Amazon reviews are critical for KDP visibility, while professional reviews and endorsements help with bookstore and library placement through IngramSpark.

A professional book review is particularly valuable because it works across all channels. You can feature it on your Amazon listing, include it in your pitch to bookstore buyers, and add it to your library marketing materials. It is a single investment that supports every distribution channel.

Final Thoughts

KDP and IngramSpark are not competitors — they are complementary tools that serve different purposes. KDP dominates the Amazon ecosystem, while IngramSpark opens the door to the wider book market. The smartest self-published authors use both, playing to each platform's strengths.

Whatever platform strategy you choose, make sure your book is ready for prime time. Invest in professional editing, cover design, and a professional book review to give your book the best possible foundation for success on any platform.