KDP Seller Hub
Tools for Amazon KDP self-publishers — estimate royalties, find your break-even point, and turn an income goal into a clear sales target.
Last Updated: June 2026
Reviewed for current platform fees and pricing rules.
Featured resources
A good place to start in this hub.
Calculators
Free, no-signup calculators built for this ecosystem.
Guides
Plain-English walkthroughs that pair with the calculators above.
How KDP Royalties Work
How Amazon KDP royalties are calculated for paperbacks, hardcovers, and Kindle eBooks.
How Many Books Must You Sell To Break Even?
How to figure out how many sales it takes to recover your cover, ads, and publishing costs.
How Many Books Do You Need to Sell to Hit Your KDP Income Goal?
Work backward from a dollar goal to the number of books you actually need to sell — with realistic expectations.
Comparisons
Side-by-side breakdowns of the platforms sellers in this ecosystem weigh up.
Other Seller Hubs
Selling on more than one platform? Explore the others.