KDP royalty tiers explained: why some ebooks earn 70% and others only 35%

Two authors publish ebooks on the same day. One priced at $4.99 earns roughly $3.04 every time someone buys it. The other priced at $12.99 earns $4.55 — a bigger dollar number, but a far smaller share of the price, and if that second author had priced at $2.98 instead of $2.99, the royalty would have collapsed even further. Same platform, same royalty math, wildly different outcomes, because KDP's royalty structure isn't a flat percentage — it's a set of tiers with eligibility rules and hidden per-unit fees that most self-published authors only discover after their first payout looks smaller than expected.

Why some ebooks earn 70% and others earn 35%

KDP offers two ebook royalty tiers, and which one applies isn't your choice alone — it's gated by price:

• 70% royalty — available only when your list price falls within a specific band (roughly $2.99–$9.99 in the US, with similar bands in other supported marketplaces), and requires enrollment in eligible territories.
• 35% royalty — applies to everything outside that band: price the book at $1.99 or $12.99 and you're automatically dropped to the lower tier, no matter how good the book is.

This is why a $12.99 ebook can out-earn a $4.99 one in raw dollars while still returning a worse percentage — the higher-priced book is very likely sitting outside the 70% band entirely.

The delivery fee nobody reads about until it's too late

At the 70% tier, KDP subtracts a per-download delivery fee based on file size — about $0.15 per megabyte. This is where cover images, embedded fonts, and heavy formatting quietly cost you money on every single sale. A lean 1 MB text file barely notices the fee. A image-heavy 8 MB file loses $1.20 off the top of every sale, whether the book is a $2.99 novella or a $9.99 illustrated guide.

At the 35% tier, there's no delivery fee at all — but you're also only keeping just over a third of the list price, so the fee's absence rarely compensates for the tier you lost.

Worked example: the same book at two prices

Consider a novel with an estimated 3 MB file size, priced at $4.99 in the 70% tier:

• Royalty base: $4.99 × 70% = $3.493
• Delivery fee: 3 MB × $0.15 = $0.45
• Royalty per sale: $3.043 → about $3.04

Now imagine the same manuscript priced at $12.99 — above the 70% band, so it falls to 35% with no delivery fee:

• Royalty per sale: $12.99 × 35% = $4.5465 → about $4.55

The higher-priced book earns more per copy in absolute terms, but converts a smaller share of the cover price into royalty, and needs a meaningfully higher perceived value to sell at the same rate as a $4.99 book in a crowded genre. Whether that trade-off makes sense depends entirely on your genre's price expectations — a $12.99 self-published thriller competing against $4.99 comparables is fighting an uphill battle regardless of royalty tier.

Paperbacks: royalty minus a print cost that scales with page count

Paperback royalties work differently. KDP prints the book on demand and subtracts a printing cost before applying a flat 60% royalty rate. For a standard 6×9 black-and-white paperback, the approximate US printing cost formula is a fixed base plus a per-page charge above a threshold — roughly $0.85 plus $0.012 for every page over 108.

This means printing cost — and therefore royalty — depends on page count in a way ebooks never do. A slim 120-page book and a dense 400-page book have meaningfully different economics even at the identical list price.

Worked example: a 200-page paperback at $12.99

• Printing cost: $0.85 + ($0.012 × (200 − 108)) = $0.85 + $1.104 = $1.95
• Royalty: 60% × ($12.99 − $1.95) = 60% × $11.036 = $6.62 per copy

That same page count sets a floor on how low you can price the book at all. The minimum viable list price — the price at which royalty hits exactly zero — is the printing cost divided by 60%, rounded up: $1.95 ÷ 0.60 ≈ $3.26. Price below that and every copy sold actively loses you money once the print cost is subtracted, even though the storefront will happily let you set that price.

What this means for pricing strategy

• Ebooks: staying inside the 70% band is usually worth more than chasing a higher list price, unless your genre supports premium pricing (technical nonfiction, niche reference) where readers expect to pay more regardless of royalty tier.
• File size matters at 70%. A bloated file with unnecessary embedded fonts or oversized cover images is a real, permanent tax on every sale — trim it once and keep the saving forever.
• Paperbacks need headroom above the print-cost floor. Pricing just a dollar or two above the minimum viable price leaves almost nothing for royalty; price with enough margin that a discount or a price-matched competitor doesn't push you underwater.
• Longer paperbacks cost more to print, which either compresses your royalty or requires a higher list price to compensate — decide which trade-off fits the genre before you finalize a trim size and page count.

None of this is exotic math, but it is math that has to be redone every time you change a price, a trim size, or a file's asset weight — and the tier cutoffs are unforgiving of a few cents in the wrong direction. Our KDP royalty & book price calculator switches between ebook and paperback formats, applies the correct tier and delivery fee automatically, and for paperbacks shows the print cost, royalty, and minimum viable price side by side — so you can see exactly where a price change helps and where it quietly moves you into a worse tier or below the profitability floor.

Price a self-published book by looking only at the cover price and you'll misjudge your actual earnings on almost every title. Run both formats through the numbers first, and you'll know exactly what each format earns before a single copy sells.