Newsroom / Thought Leadership / KDP Royalties Explained: What Amazon Act…

Most indie authors learn KDP royalties the hard way. After they have already uploaded their files, set their price, and clicked publish. Amazon's royalty structure looks deceptively clean on the surface: 35% or 70%, pick one. The reality underneath it is more complicated, and the parts that complicate it most are the ones Amazon does not advertise in the headline numbers. The advice that circulates in indie author communities either stops at the two tiers or glosses over the mechanics that determine what those percentages actually produce. This is the version that does not stop there.

Amazon KDP offers two royalty tiers. The 70% tier is available when an ebook is priced between $2.99 and $9.99, and the title is enrolled in KDP Select. Both conditions must be met. The 35% tier applies to everything else: titles priced below $2.99, titles priced above $9.99, and any title not enrolled in KDP Select regardless of price. This is not a negotiation. It is a rule. An ebook priced at $10.00 is ineligible for the 70% tier. An ebook priced at $9.99 but sold outside KDP Select on Kobo or Apple Books does not qualify either. The tier boundary is a hard line, and the conditions that govern it are not presented as prominently as the percentages themselves.

The delivery fee is the part almost no one mentions until an indie author sees her first royalty report. On the 70% tier, Amazon deducts a delivery cost from each sale: $0.15 per megabyte of the downloaded file size. For a standard novel with no illustrations, this is negligible. A 300-page literary novel in epub format might run 500KB or less, producing a delivery fee under $0.10. For a heavily illustrated children's book, the math is different. High-resolution images push file sizes into the multiple-megabyte range, and a $0.15/MB deduction against a $6.99 gross royalty on a $9.99 picture book compounds in ways an author only fully understands after the first payout arrives. [Kamara Bloom](/authors/kamara-bloom)'s children's catalog under [Little Hibiscus Books™](/imprints/little-hibiscus-books) is an example of where this matters in practice. The Braver Me Collection™ spans 7 illustrated picture book titles, and for that catalog, file size management is not an afterthought. It is part of the production workflow, because the delivery fee on an oversized file erodes what is already a thin per-unit margin in the picture book format.

The royalty math on a $9.99 ebook runs as follows. On the 70% tier with KDP Select enrollment: $9.99 multiplied by 0.70 equals $6.99 gross royalty, minus the delivery fee (approximately $0.15 for a standard-format novel) produces a net royalty of approximately $6.84 per sale. On the 35% tier at the same price point: $9.99 multiplied by 0.35 equals $3.50 per sale, with no delivery fee deducted. The difference between $6.84 and $3.50 on a $9.99 title is the entire argument for structuring pricing around the 70% tier. Now run the same calculation at $12.99. A title priced above $9.99 is forced into the 35% tier regardless of enrollment status. $12.99 multiplied by 0.35 equals $4.55 per sale. The author who prices at $12.99 earns $4.55. The author who prices at $9.99 in the 70% tier earns $6.84. The higher price produces the lower royalty. This is not an intuitive outcome, and it is one that authors who set prices without understanding the tier structure discover only after the damage is done.

[K.L. Shadow](/authors/kl-shadow)'s noir titles under [Saint & Shadow Press™](/imprints/saint-and-shadow-press) sit in the standard novel length range with minimal embedded media, making the 70% tier at $9.99 the highest-efficiency pricing position available. The delivery fee on a clean literary novel is marginal. The per-unit royalty is nearly double what the 35% tier would produce at the same price point. That is not a coincidence or a default. It is a deliberate positioning decision. The same logic applies differently to titles in the [RRC Professional Press™](/imprints/rrc-professional-press) catalog, where the Credit Repair Operations Manual series presents a different set of variables. Authority nonfiction guides are frequently priced above $9.99 to signal credibility and serve a reader with higher willingness to pay for professional guidance. The formatting complexity of an operational manual, including tables, charts, and structured reference material, pushes file sizes higher. On titles priced above $9.99, the 35% tier applies regardless, and the delivery fee calculus becomes secondary. The per-unit economics at $14.99 or $19.99 in the 35% tier can still exceed the 70% tier math on a $9.99 novel in absolute dollars, because the price differential is large enough to overcome the royalty rate disadvantage. The variables are not uniform across catalogs.

KDP Select enrollment is the condition that unlocks the 70% tier in most of the markets that matter most. Here is what that condition actually requires: enrolling an ebook in KDP Select means agreeing to sell that title exclusively through Amazon for the duration of the enrollment period, which is 90 days and renews automatically unless the author opts out before the renewal date. The title cannot be sold on Kobo, Apple Books, Google Play, Barnes and Noble Press, or any other platform while the enrollment is active. The 70% royalty tier outside KDP Select is available in a limited set of countries. In most major markets, including the United Kingdom, Germany, France, Japan, Brazil, and Mexico, ebooks sold through KDP without Select enrollment are capped at the 35% tier regardless of price. The practical implication is direct: authors who want the 70% rate in international markets and want to maintain distribution on other platforms are working against each other's requirements. The tradeoff is not hidden. It is simply not framed as prominently as the headline royalty rates. Enrolling in KDP Select means giving Amazon a monopoly on your ebook distribution in exchange for a higher per-unit royalty on that platform.

The authors who price their titles with this math already done make different decisions than the ones who learn it afterward. [Kiku Lani](/authors/kiku-lani)'s 7 titles under [Velvet Fire Press™](/imprints/velvet-fire-press) in the $9.99 range represent a deliberate architecture, not a default price point. [André Stone](/authors/andre-stone)'s The Blood Ledger™ series, including Heatwave Under Fire and The Holdover, is priced to sit comfortably inside the 70% tier. That pricing is architecture, not accident. The serialized crime fiction reader expects a price point in that range, and the author earns more per sale there than she would at $12.99. The imprint infrastructure that [Reid & Reid Consulting™](/about) builds before any author launches includes this math. For titles in the RRC Professional Press™ nonfiction catalog, the same scrutiny applies with different inputs: higher price expectations, illustrated formatting that affects file size, and a buyer psychology that correlates price with authority rather than treating lower cost as an incentive. The royalty logic shifts, but the discipline of calculating it before setting a price does not.

Amazon KDP is not a passive income machine with a simple royalty rate. It is a distribution platform with a specific fee structure that rewards authors who understand it before they publish. The authors who approach it without that understanding leave money on the table at every price point, in every market, on every title they launch. [Reid & Reid Consulting™](/about) built the imprint infrastructure, including pricing strategy, file management discipline, and platform enrollment decisions, so that every author in the catalog launches with this math already done. That is what publishing infrastructure looks like when it is built to last.