How to Make Money with a Side Hustle Using Amazon KDP — Self-Publishing Guide (2026)

I've been fascinated by the world of self-publishing on Amazon Kindle Direct Publishing (KDP) for a while now. As someone who's dabbled in writing and publishing, I've seen firsthand how lucrative this platform can be. In 2020, I decided to take the plunge and publish my first book on KDP. It was a thriller, and I was thrilled to see it climb the charts.

So, how does it work? In a nutshell, KDP allows authors to publish their work directly to Amazon, bypassing traditional publishing routes. You can upload your manuscript, cover design, and metadata, and Amazon will take care of the rest. The platform is free to use, and you retain creative control and 70% of the royalties (depending on the book's price and your location).

Now, where does the money come from? Amazon pays authors based on the number of copies sold, and the royalties are calculated as a percentage of the book's net sales. For example, if your book sells for $2.99 and you earn 70% royalties, you'll receive $2.09 per sale. Not bad, considering you didn't have to shell out a dime for printing or distribution.

Let me give you a real-world example. I published my thriller in June 2020, and it took about three months to gain traction. By September, it had sold around 500 copies, earning me around $1,000. Not a fortune, but a decent side hustle. I continued to promote the book, and by the end of the year, it had sold over 2,000 copies, netting me around $4,000.

Of course, not everyone will have the same success. Earnings can vary wildly depending on factors like genre, quality of writing, marketing, and competition. But with persistence and a solid strategy, it's possible to earn a decent income on KDP.

One of the biggest advantages of self-publishing on KDP is the potential for passive income. Once your book is published, it can continue to sell without requiring much additional effort. This is especially true for non-fiction books, which can remain relevant for years to come.

However, there are some downsides to consider. For one, the competition on KDP is fierce. With millions of books to choose from, it can be tough to stand out. Additionally, Amazon's algorithms can be finicky, and a poorly optimized book cover or metadata can hurt your chances of visibility.

Another challenge is the time-consuming process of writing, editing, and proofreading. It's not uncommon for authors to spend dozens of hours on a single manuscript, only to have it rejected or receive lukewarm reviews. And let's not forget the importance of marketing and promotion – without a solid strategy, your book may struggle to reach its target audience.

Despite these challenges, I've found that the rewards of self-publishing on KDP far outweigh the risks. With the right mindset, skills, and strategy, it's possible to earn a decent income and build a loyal following of readers.

In my experience, the key to success lies in understanding your target audience, crafting a compelling story, and investing time and effort into marketing and promotion. It's also essential to stay flexible and adapt to changes in the market and Amazon's algorithms.

If you're considering self-publishing on KDP, I recommend starting with a solid manuscript, a professional cover design, and a well-optimized metadata package. From there, focus on building your author platform, engaging with readers, and promoting your work through various channels.

In the end, making money on KDP requires a combination of creativity, perseverance, and strategic thinking. With the right approach, you can turn your passion into a profitable side hustle – and who knows, maybe even a full-time career.