KDP Royalty Calculator 2026: Your Real Per-Book Payout

Why You Need to Calculate Before You Publish

Most new authors set a price by guessing, then feel confused when the royalty report does not match their hopes. A KDP royalty calculator removes the mystery by showing exactly what lands in your account after Amazon takes its share, and doing that math before you publish changes which price you choose. The inputs are simple: your list price, your royalty tier, your file size for ebooks, and your page count and trim size for print. Once you understand how those combine, you can price for maximum profit instead of vanity. Producing the book is no longer the hard part, since a free AI book generator can draft a full manuscript in an evening and let you focus on the numbers.

The Ebook Formula in Plain Terms

For ebooks, Amazon offers 35 percent or 70 percent, and the tier depends mostly on your list price. The 70 percent rate applies between 2.99 and 9.99 in eligible markets but subtracts a per-megabyte delivery fee based on file size. So the real formula is list price times 0.70 minus the delivery fee. A 4.99 novel with a tiny text file nets roughly 3.44, while an image-heavy book at the same price can lose real money to delivery charges. When you generate a full book with AI that is mostly text, you stay firmly in the profitable zone.

• 70 percent tier: price 2.99 to 9.99, minus a per-megabyte delivery fee.
• 35 percent tier: any price, no delivery fee, wider market availability.
• Rule of thumb: text-heavy books almost always win on the 70 percent tier.

The Paperback Formula Is Different

Print royalties work by subtraction, not a flat percentage. Amazon pays 60 percent of your list price minus a printing cost that depends on page count, trim size, and ink. A 300 page black-and-white paperback might cost around 4.50 to print, so at a 12.99 list price you earn 12.99 times 0.60 minus 4.50, roughly 3.29 per copy. Color interiors cost far more to print and squeeze margins hard, which is why most fiction stays black and white. Knowing this before you finalize your page count is why writers who write your book with AI and control length deliberately keep more of every sale.

Page Reads Add a Hidden Line

If you enroll in KDP Select, your calculation gains a second income stream from Kindle Unlimited page reads. You earn a per-page rate from the shared KENP fund, which fluctuates monthly but hovers around half a cent per page read. A 400 page novel read completely can therefore add a couple of dollars on top of any sale, and for binge genres that page-read line often dwarfs direct sales, so the long books that earn most are exactly what you can write your book with AI to produce. Our full KDP royalties guide breaks down how to forecast that fund, and the longer books that earn the most are exactly what an AI book writing tool makes practical to produce.

A Worked Example From Draft to Payout

Say you draft a 90,000 word thriller tonight, revise it over a week, and price the ebook at 4.99 and the paperback at 13.99. The ebook nets about 3.44 per sale, the paperback about 3.89 after print costs, and Select page reads might add one to three dollars per engaged reader. Sell 200 ebooks, 40 paperbacks, and earn moderate page reads in a month, and you are looking at meaningful four-figure potential from a single title. That is the compounding case for catalog building, and it is why authors lean on this book generator to draft faster. See the deeper arithmetic in our royalty math breakdown.

The Mistakes the Calculator Catches

Running the numbers early surfaces errors that quietly drain income. Pricing an ebook at 10.99 drops you from 70 to 35 percent and can halve your royalty overnight. Choosing a large trim size or a bloated page count inflates print cost and shrinks your paperback margin. Bundling huge images without compression triggers avoidable delivery fees. Each of these is invisible until the report arrives, which is why smart publishers model the payout first. Planning several titles on aibookgenerator.org lets you compare pricing scenarios before a single book goes live, and the AI Book Generator keeps the drafting cost near zero while you optimize.

Pricing for the Profit Peak

The goal is never the highest price or the most sales in isolation, but the point where price times volume peaks. For most genre fiction that peak sits between 2.99 and 5.99 for ebooks, high enough to earn the 70 percent rate and low enough to convert impulse buyers. Nonfiction tolerates higher prices because readers pay for a specific outcome. Test two or three price points over a few weeks and let the royalty report pick the winner. When you can generate a full book with AI across several titles, you can afford to experiment rather than gamble on one.

Turn the Math Into Money

A calculator only matters once you have books to price, so the first move is producing quality titles you can list. Draft your next manuscript tonight, model its payout at a few price points, and publish in the profit peak, then repeat. Explore the book generator hub to plan a series, name your author identity with the free pen name generator, and test hooks with the free book title generator. When you scale to many titles a month, the pricing page shows the plans, but you can prove the drafting step for nothing first, so try it free and watch a complete book appear.