How Much Do Self-Published Authors Actually Earn? What the Best Surveys Tell Us

There is no official KDP earnings distribution published by Amazon, so any article claiming that the ‘average KDP author earns X’ is using a proxy, a self-selected survey, or an invented estimate. The best available public evidence comes from broader indie-author and professional-author surveys, and those sources describe very different populations.

That does not make the data useless. It means every number needs a label: who was surveyed, what counted as income, whether the authors were full time, whether the sample skewed commercial, and whether the figure refers to book income or all author-related income.

Written Word Media 2025: A Commercial Indie-Author Sample

Written Word Media received 1,346 responses in its 2025 indie-author survey. It explicitly says the audience skews toward serious, prolific indie authors and that income is self-reported. In that sample, 44% reported $100 or less per month, 20% were in the $500-to-$5,000 range, 13% reported more than $5,000 per month, and 8% reported more than $10,000 per month.

Amazon was named the top revenue source by 83% of respondents, but the survey is not KDP-only. Authors can earn from other retailers, direct sales, and other publishing channels, so those brackets should not be labeled ‘KDP earnings.’

Authors Guild 2023: Professional and Full-Time Authors

The Authors Guild’s large 2023 survey looked at 2022 income. Across all participating authors, median book income was $2,000. Full-time self-published authors reported median book income of $12,800, while full-time self-published authors who had been publishing since at least 2018 reported a $24,000 median.

That sample is different from Written Word Media’s. It includes professional authors and distinguishes book income from other author-related income. The medians are useful context for career economics, not a forecast for a new KDP account.

CREATe/ALLi 2023: Another Professional Indie Sample

Research published through CREATe and commissioned by the Alliance of Independent Authors focused on indie authors who had self-published at least one book and spent at least half their working time on writing or self-publishing. It reported a typical 2022 income of $12,755 from the included sources.

Again, that is a selected professional population, not the entire universe of people who have uploaded a book. Comparing it with beginner-heavy or hobby-heavy samples shows why one universal average is not meaningful.

What the Surveys Say About Catalog Size

Written Word Media’s recent surveys show a strong relationship between larger catalogs and higher income. In the 2025 data, higher-income authors tend to have more books and are often publishing in series. The survey itself warns that correlation is not causation.

Experienced, higher-earning authors may also have better covers, stronger email lists, more marketing knowledge, greater production capacity, and more years of reader data. Catalog size is part of a system rather than an isolated lever.

Genre Changes the Distribution

The 2025 Written Word Media sample over-represents commercial indie fiction such as romance, fantasy, science fiction, mystery, and thriller. Romance authors were disproportionately represented in higher-income groups. That is useful for understanding this indie ecosystem but not proof that every romance book has a high expected income.

The Authors Guild also found major genre differences among full-time authors. Genre affects release cadence, series behavior, KU use, price, length, production cost, and reader expectations, so the headline median hides several different business models.

Why the Numbers You See Online Skew High

Public income reports have selection bias: exceptional months are more likely to be shared than quiet ones, and authors who have built businesses are more likely to answer publishing-business surveys. Screenshots also often show royalties or revenue without advertising and production costs.

Use income reports to understand mechanisms, not to judge whether you are ‘behind.’ The useful questions are how many books are live, how old the catalog is, what the marketing cost is, where revenue comes from, and whether the number is gross or after costs.

Frequently Asked Questions

Keep the Sample Attached to the Number

Author-income statistics become misleading when the survey population disappears from the sentence. Compare like with like, and use your own catalog economics for actual business decisions.