
Free KDP Royalty Calculator: Which One to Trust and the Math Amazon Publishes (2026)
A KDP royalty calculator is only as good as the pricing rules behind it, and on 7 July 2026 Amazon changed one of them: the 70% royalty band for Kindle eBooks on Amazon.com now runs $2.99 to $12.99, up from $2.99 to $9.99 (KDP Help, “eBook List Price Requirements”, data checked 2026-08-14). Of the six free calculators whose eBook rules could be read on 2026-08-14, five still show the old $9.99 ceiling — price a book at $12.99 in one of those and it tells you that you earn 35%, when Amazon now pays 70%. ...










