KDP Royalty Calculator — Estimate Your Earnings

A KDP royalty calculator tells you exactly how much money you'll pocket per sale based on your book's list price, format, marketplace, and royalty rate. Amazon's royalty formulas differ for eBooks, paperbacks, and hardcovers, and printing costs eat into your margins more than most new authors expect. Use PublishRank's Royalty Calculator to model different price points and see your per-sale earnings instantly, before you commit to a price you'll regret.

How Amazon KDP Royalties Actually Work

Amazon offers two royalty tiers for eBooks: 35% and 70%. The 70% option sounds like a no-brainer, but it comes with conditions. Your eBook must be priced between $2.99 and $9.99. It has to be enrolled in specific marketplaces. And Amazon deducts a delivery fee based on file size, which can shave off anywhere from a few cents to over a dollar on image-heavy books.

For print books, the math is different. Amazon takes a fixed printing cost (based on page count, trim size, and ink type) plus a percentage of the list price. Your royalty is whatever's left. The formula looks like this:

Print Royalty = (List Price × 60%) − Printing Cost

That 60% isn't your royalty. It's the share Amazon starts with before subtracting what it costs to physically produce the book. On a 200-page black-and-white paperback priced at $12.99, your printing cost is roughly $3.25, leaving you about $4.54 per sale. Price it at $9.99 and you're down to $2.74.

Hardcovers follow the same structure, but printing costs run higher. A 200-page hardcover costs around $6.64 to print, so you need a higher list price just to break even.

The 35% vs. 70% eBook Royalty Decision

Most authors default to the 70% royalty rate and never think about it again. That's usually the right call, but not always.

The 70% rate requires you to price between $2.99 and $9.99. If you want to sell a short read at $0.99 or $1.99, you're stuck at 35%. On a $0.99 eBook, that's about $0.35 per sale. Painful, but sometimes useful for series starters or promotional runs.

The delivery fee at 70% matters more than people realize. A children's picture book with a 10MB file might incur a $1.50 delivery charge. At that point, you could actually earn more per sale at the 35% rate, depending on your price. A KDP royalty calculator lets you compare both scenarios side by side so you're not guessing.

When 35% Makes More Sense

• Your eBook file is very large (comics, photography, heavily illustrated books)
• You're pricing at $0.99 or $1.99 for a promotion
• You're selling in marketplaces where the 70% option isn't available (India, Brazil, Japan, and others have restrictions)

Printing Costs: The Variable That Kills Margins

New KDP authors consistently underestimate printing costs. A 400-page paperback with cream paper costs about $5.53 to print. A full-color interior children's book at 32 pages can cost $3.69. These numbers shift based on trim size, and Amazon updates them periodically.

Here's a quick reference for standard black-and-white paperback printing costs (6"×9" trim, white paper):

• 100 pages: ~$2.15
• 200 pages: ~$3.25
• 300 pages: ~$4.35
• 400 pages: ~$5.53

Color interiors roughly double or triple these numbers. If you're publishing a cookbook or art book in print, run the numbers carefully. Many authors discover their ideal price point leaves them with less than $1 profit per copy.

Expanded Distribution: Lower Royalties, Wider Reach

KDP's Expanded Distribution channel makes your paperback available through bookstores, libraries, and online retailers beyond Amazon. The trade-off? Your royalty drops significantly. Instead of the standard 60% formula, Expanded Distribution uses 40%:

Expanded Distribution Royalty = (List Price × 40%) − Printing Cost

On that same 200-page paperback at $12.99, your Expanded Distribution royalty drops to about $1.95. At lower price points, you might earn nothing at all, or even see a negative royalty (Amazon won't let you publish at a price below the minimum, but the margins can be razor-thin).

This is why pricing for print requires you to balance three audiences: Amazon buyers, Expanded Distribution buyers, and your own profit expectations. Running multiple scenarios through a royalty calculator before publishing saves you from locking in a bad price.

How to Price for Maximum Profit

There's no universal "best price." But there is a process that works.

Start by finding your floor: the minimum price where you earn a royalty you can accept. For most self-published authors, that's at least $3 on a paperback and $2 on an eBook. Then look at your competition. Search your category on Amazon and note what the top 20 books are priced at. Your price should fall within that range unless you have a compelling reason to go higher or lower.

Test different scenarios. A $14.99 paperback might earn you $5.74, while $12.99 earns $4.54. That $1.20 difference per sale adds up fast at volume. But if $14.99 scares off buyers in your genre, the higher per-unit royalty won't compensate for lost sales.

For eBooks, the sweet spot in most nonfiction categories sits between $4.99 and $7.99. Fiction authors often do well at $2.99 to $4.99. These aren't rules. They're starting points. Your data will tell you the rest.

International Marketplaces Change the Math

Amazon operates KDP stores in 13+ marketplaces: US, UK, Germany, France, Spain, Italy, Japan, Canada, Australia, and more. Royalty rates and printing costs differ by marketplace. A book priced at $12.99 in the US doesn't automatically earn the same margin in the UK at the equivalent GBP price.

Currency conversion, local printing costs, and marketplace-specific royalty rules all play a role. If a significant portion of your audience is outside the US, you should calculate royalties for each major marketplace individually. Guessing based on US numbers can leave 10-20% of your potential earnings on the table.