# KDP rules we track ## Royalties - Paperback: 60% of list price minus printing (50% below a threshold); Expanded Distribution 40%. - Hardcover: 60% or 50%. - Ebook: 70% or 35%. ## Weekly title limits 2 created and 2 submitted per format per week; resets Sunday 00:00 UTC. Creation and submission limits are separate. Updates to submitted titles do not count; a saved draft counts when it is first submitted. ## Metadata Title and subtitle together under 200 characters. Descriptions may not contain contact details, urls, reviews, quotes, price, time-sensitive, sales rank. ## Keywords and categories Up to 7 keywords and 3 categories. Avoid: best, bestseller, bestselling, free, new, sale, kindle, kdp, book, books. ## Low-content books No ISBN required; not eligible for a free KDP ISBN. Coloring and puzzle books are generally not low-content. ## AI disclosure KDP asks about AI-generated text, images, translations. AI-generated content must be declared, even after substantial edits. AI-assisted content (the author made it and AI only edited or brainstormed) needs no declaration. ## Where KDP's pages disagree - **AI_DISCLOSURE:** AI-generated content must be declared, even after substantial edits. AI-assisted content (the author made it and AI only edited or brainstormed) needs no declaration. - **CATEGORIES:** Chosen in KDP's category window after setting primary audience and marketplace; reading age limits Children's and Teen categories. - **EBOOK_PRICES:** The 70% band on Amazon.com is $2.99-$12.99 since July 7, 2026. Delivery rates come from the Digital Book Pricing Page, last updated April 21, 2026. - **HARDCOVER_COVER:** Case and spine additions are not published as a formula. They were derived from the calculator's output across trims and page counts, and match it exactly. The help page's 0.51 in wrap and 0.76 in barcode offset disagree with the calculator; the calculator is used. - **HARDCOVER_TRIMS:** Hardcover is not supported on kdp.amazon.co.jp. - **JP_UNAVAILABLE_INTERIORS:** The .co.jp table lists standard color but its note says it is currently unavailable. - **KEYWORDS:** The help page gives no character limit per keyword; the KDP form shows it. Words already in the title or categories add nothing. - **METADATA:** Neither the help pages nor this file give a description length limit; the KDP form shows it. - **PAPERBACK_PRINT_COST:** Rates are from the help page. Fixed-cost page limits and the JPY groundwood fixed cost follow KDP's royalty calculator, which differs from the help tables: fixed cost ends at 108 pages for black and groundwood (106 on Amazon.com.au), while the help page says 110 and 112. Standard color is not sold on Amazon.com.au. - **PAPERBACK_TRIMS:** On 8.27 x 11.69 the .com help table lists premium color 24-590, while the .co.jp table and KDP's royalty calculator both allow 24-780. The calculator value is used. - **PRINT_ROYALTY.hardcover:** The help page gives 98/99 SEK for Amazon.se; KDP's royalty calculator uses 110 SEK like paperback. The calculator value is used. - **RTL_STANDARD_COLOR:** Standard color with right-to-left reading is only offered on Amazon.co.jp. - **SPINE_PER_PAGE:** Standard color prints on the same lighter white paper as black-and-white books. The cover page and KDP's cover calculator both use 0.002252; the submission guidelines list a single 0.002347 for all color paper. - **TITLE_LIMITS:** Creation and submission limits are separate. Updates to submitted titles do not count; a saved draft counts when it is first submitted. ## Change log - 2026-11-07: First full check. All print, cover, pricing, royalty, metadata, language, low-content and AI disclosure rules were read from KDP's help pages and calculators and written down with their sources. Later changes will be listed here with the date we noticed them. Open data: https://kdpbookai.com/kdp/data.json --- Page: https://kdpbookai.com/kdp/rules ยท Checked 2026-11-07 Independent product. Not affiliated with Amazon. KDP and Kindle are trademarks of Amazon.com, Inc. kdpbookai is not connected to kdpbook.io or any other similarly named service.