How to Price a KDP Book

1. From List Price to Paperback Royalty

For a paperback sold through standard distribution on Amazon.com, your tax-exclusive list price determines the royalty tier. KDP then subtracts printing cost from that tier's share:

• List prices below $9.99 receive a 50% royalty rate.
• List prices of $9.99 or higher receive a 60% royalty rate.

Expanded Distribution (40% rate) is a separate distribution program and is not modeled on this tool.

Under our current rule snapshot (2026-09-10.preview.2), consider a standard US trade paperback: 6 × 9 inches, 250 pages, black interior ink on white paper. Amazon's manufacturing charge for this specification is $4.00 ($1.00 fixed base fee + 250 pages × $0.012 per page).

In this worksheet, the lowest price that covers the $4.00 print cost in the applicable 50% tier is $8.00 ($4.00 ÷ 50%). Confirm the minimum KDP gives your submitted book before setting its final price.

When the list price is raised to $14.99, the 60% royalty tier yields 60% × $14.99 = $8.994. After deducting the $4.00 printing fee, our model's internal royalty is $4.994, which the interface displays rounded as $4.99.

Display Rounding Does Not Feed Back into Calculations

The worksheet keeps decimal precision for intermediate values. It calculates the ACoS estimate from $4.994, then formats the displayed result. The CPC limit is separately rounded down to the currency unit; displayed $4.99 is not fed back into either calculation.

2. Break-Even Advertising: Budgeting Clicks Against Royalties

Amazon Ads defines ACoS (Advertising Cost of Sales) as total ad spend divided by attributed sales revenue multiplied by 100. On this worksheet, Break-even ACoS defines the exact boundary where ad spend per sale equals your print royalty:

For our 250-page book at $14.99, the calculation evaluates as:

33.32% is a per-copy planning boundary under this one-edition, tax-exclusive price assumption. Amazon Ads reports actual campaign ACoS from ad spend and attributed sales revenue, which may not match this example. This estimate also excludes every expense beyond printing and ads. Dividing the displayed $4.99 by $14.99 would instead give 33.29%; the worksheet uses its pre-display amount.

The sheet's “royalty margin” uses the same royalty ÷ list price ratio. It is not a net business margin: editing, design, taxes, and other costs are outside this calculation.

Ad Cost per Sale and Conversion Rate

To translate click costs into sale-level economics, author-supplied advertising assumptions are factored into the worksheet:

• Cost Per Click (CPC): What you pay Amazon each time an ad click occurs (e.g., $0.45).
• Conversion Rate (CVR): The percentage of clicks that turn into an order (e.g., 10%, meaning 1 sale every 10 clicks).

From these two inputs, estimated ad cost per sale (CPA) is derived:

Deducting this ad cost from the royalty gives the estimated amount per copy after ads, before other expenses:

Under the entered CVR assumption, the worksheet estimates a CPC limit for this one sale:

The worksheet rounds this limit down to $0.49. At the entered 10% CVR, that is at or below its modeled break-even point; actual campaign performance can differ.

3. Compare Four Prices for the Same Book

The table below demonstrates how list price affects royalty tier, unit margin, break-even ACoS, and net outcome under identical ad assumptions ($0.45 CPC, 10% CVR = $4.50 ad cost per sale) for a US 6 × 9 in, 250-page white paper paperback ($4.00 print cost).

4. Rules, Limits, and What This Page Does Not Predict

To maintain financial clarity, the worksheet adheres to strict boundary conditions:

• Missing or Zero CVR: If conversion rate is left blank or entered as 0%, the worksheet displays an en-dash (—) for Break-even CPC. A CPC cap cannot be calculated without an order-conversion assumption.
• Zero or Negative Royalties: If a list price produces a royalty-rate share at or below printing cost, the worksheet shows a dash for break-even ACoS and CPC rather than inventing a usable budget.
• Inputs Are Assumptions: The worksheet does not measure a live campaign. Actual CPC, conversion rate, and attributed sales need to come from your own Ads reports.
• Standalone Marketplace Currencies: Each Amazon marketplace calculates royalties and minimum prices in its local currency. The worksheet does not convert currencies or assume uniform profit across international territories.
• Other Publishing Expenses: The calculations reflect KDP manufacturing and advertising deductions only. They do not deduct editing, cover design, formatting, taxes, or general business overhead.

5. Frequently Asked Questions

6. Official Amazon Sources & Companion Guides

Calculations and guidelines follow official Amazon KDP and Amazon Ads documentation:

Explore companion references in the KDP Toolkit editorial series:

• How KDP Print Royalties Work — Formula breakdown and marketplace thresholds.
• Printing Costs & Minimum List Price — Fixed and variable charges, Large Trim, and hardcover rules.