IngramSpark vs. Amazon KDP: Which Is Better for Wide Distribution?

IngramSpark and Amazon KDP solve different distribution problems, and many authors should use both. Here's an honest comparison of reach, royalties, bookstore access, and costs, plus the simplest way to get both.

IngramSpark vs. Amazon KDP is one of the most-asked questions in self-publishing, and the honest answer is that they're not really competitors. They solve different problems. KDP gets you onto Amazon; IngramSpark gets you into bookstores and libraries. Understanding what each does best is how you choose, and for many authors, the best answer is both.

Distribution Reach Compared

This is the heart of the decision. Each platform owns a different slice of the market.

• Amazon KDP distributes your book directly on Amazon, the single largest book retailer in the world, where the majority of self-published sales happen. Setup is fast and the ecosystem (Kindle, Kindle Unlimited, Author Central) is powerful.
• IngramSpark distributes through the Ingram catalog, the wholesale network that physical bookstores, libraries, and international retailers actually order from, reaching 40,000+ outlets worldwide. This is the channel KDP can't fully reach.

Short version: KDP owns Amazon. IngramSpark owns the bookstore-and-library channel. Your readers shop in both places.

Royalty Structure Compared

On Amazon itself, KDP generally gives you the better print margin. For sales through bookstores and other retailers, IngramSpark is how you reach them at all, with a wholesale discount you control (bookstores typically expect 40%+ to stock a book).

Bookstore and Library Access

This is IngramSpark's decisive advantage. Bookstores and libraries order through Ingram; they generally won't order from Amazon (a competitor). To have any realistic chance of physical bookstore placement, your book needs to be in the Ingram catalog, listed as returnable, with a trade-standard wholesale discount. KDP's own "expanded distribution" exists but is widely considered weaker for true bookstore reach. If shelves matter to you, read how to get your book into bookstores.

Cost and Revision Fees

• Amazon KDP: Free to publish. No setup or revision fees. This simplicity is a real advantage.
• IngramSpark: Historically charged title setup and revision fees, though these are often waived via promotions or for members of organizations like ALLi. Budget for possible revision fees when you update files.
• Both: Print-on-demand, so no inventory cost, you (or the retailer) only pay to print what sells.

The Catch: Using Both Means Double the Work

The standard pro strategy, KDP for Amazon, IngramSpark for everywhere else, is genuinely the best of both worlds. But it doubles your operational load: two accounts, two sets of correctly-formatted files, two cover templates with different specs, two royalty dashboards, and careful coordination so you don't accidentally let KDP's expanded distribution collide with IngramSpark on the same retailers. For many authors, that complexity is where the dream of wide distribution stalls.

The Simplest Way to Get Both: Full-Service Distribution

This is where a full-service partner earns its place. Rather than managing two platforms yourself, Spines Publishing USA's distribution service places your book across 100+ global retail channels, including Amazon and the Ingram bookstore-and-library network, from one coordinated process. You get the reach of both platforms without running two back ends, while keeping up to 70% royalties and 100% of your rights.

8,000+ authors published across 100+ retail channels. One team handles the files, the specs, and the dashboards, so you get Amazon plus bookstores without becoming a distribution manager.

Which Should You Choose?

• Amazon-only, hands-on author? KDP alone is simple, free, and covers most of your sales.
• Want bookstores and libraries? You need IngramSpark in the mix, KDP can't get you there.
• Want maximum reach and willing to manage two platforms? Use both, the proven wide strategy.
• Want maximum reach without the operational headache? Use a full-service distributor that runs both for you.

IngramSpark vs. KDP isn't really an either/or. KDP wins Amazon; IngramSpark wins bookstores and libraries; together they win wide distribution. The only real question is whether you want to manage both platforms yourself or have one team do it for you. To see how distribution fits the bigger publishing picture, revisit our pillar on the best self-publishing companies in the USA.