KDP Earnings by Genre: What 350 Books Reveal
The single biggest lever in self-publishing isn't your tool, your cover, or your keywords — it's your genre. Here's the earnings-by-genre data from 350+ AI-assisted books, including the gap that surprised me most.
Earnings by genre (same author, same tools)
What makes this comparison useful: same pen name, same AI workflow, same effort per book — only the genre changed. That isolates genre as the variable.
| Genre band | Relative earnings | Notes |
|---|---|---|
| Dark romance / spicy romance | Highest (≈13× sci-fi) | ~€1,092 from 7 titles. Voracious, repeat-buying readers. |
| Romance (broad) | Very high | 82 romance books earned ~€10,000. |
| Romantasy / LitRPG | High | Strong, trope-driven niches with crossover readers. |
| Sci-fi / general fantasy | Lowest in this test | ~€84 from 7 sci-fi titles. Crowded, slower read-through. |
These are directional bands from one catalog, not a universal price list — but the ordering matches what most romance-heavy KDP publishers report. The takeaway isn't "never write sci-fi"; it's that genre choice can move your earnings by an order of magnitude before you've written a word.
Why romance dominates
- Read-through. Romance readers binge series — one fan buys book 2, 3, 4…
- Trope-driven demand. Readers search by trope (enemies-to-lovers, mafia, dark) and buy on promise.
- Kindle Unlimited page reads reward fast, high-volume readers — exactly the romance audience.
How to use this
Pick a high-demand genre you can actually write to, then produce a small series rather than one standalone. If you want the deeper "which exact niche" breakdown, see the companion guide on the most profitable KDP genres in 2026.
Write in the genre that pays
Romance, dark romance, romantasy — complete, structured books with blurb, keywords and cover. Free to test.
Start a romance book →Keep reading:
Figures from A. M. Blake's KDP catalog. Directional, not guarantees; your results depend on niche, quality, covers and consistency.