How Much Do Self-Published Authors Make? Royalty Maths Explained

Self-published authors make anything from nothing to a full-time living. No typical figure means much, because income is a formula: royalty per sale × number of sales, plus Kindle Unlimited page reads, multiplied across every book and format you have. Royalties per copy are often a few dollars. Sales volume is the part that varies enormously, and it depends far more on your catalog, genre and marketing than on luck.

This guide shows how that formula works with real royalty rates and worked examples, so you can estimate your own numbers instead of relying on income headlines.

How self-published authors actually get paid

You earn money through a few channels. Most authors use more than one.

• Ebook royalties. You set a list price and the store pays you a percentage of each sale.
• Print royalties. For print-on-demand paperbacks and hardcovers, the store takes its percentage and then subtracts the printing cost from your share.
• Kindle Unlimited (KU) page reads. If you enroll an ebook in KDP Select, Amazon pays you per page read by subscribers, from a shared monthly fund.
• Direct sales. Some authors sell from their own website or at events, where they keep more per copy but handle payment and delivery themselves.

Each channel has its own maths, so it helps to look at them one at a time.

How much you make per ebook sale

Amazon KDP's published terms pay 70% for Kindle ebooks with a list price between $2.99 and $9.99, minus a delivery fee based on file size. Outside that price band, the rate is 35%. Confirm the current rates in your KDP dashboard before you set a price, because store terms can change.

Here is what that means per copy:

• $0.99 ebook at 35%: about $0.35 per sale.
• $2.99 ebook at 70%: about $2.09 per sale, before the delivery fee.
• $4.99 ebook at 70%: about $3.49 per sale, before the delivery fee.
• $9.99 ebook at 70%: about $6.99 per sale, before the delivery fee.
• $12.99 ebook at 35%: about $4.55 per sale.

Notice the jump at $2.99. A $0.99 book has to sell roughly six copies to match one $2.99 sale. That is why many authors price full-length ebooks inside the 70% band.

Other stores publish similar rates. Kobo Writing Life lists 70% for prices of $2.99 or more and 45% below. Apple Books and Google Play Books generally pay around 70% of list price, and Barnes & Noble Press lists about 70% for ebooks priced $2.99 to $9.99. Treat these as estimates and check each store's dashboard. If you use an aggregator like Draft2Digital, you receive the store's royalty minus D2D's fee of about 10% of list price. On a $4.99 book sold through Apple, that works out to roughly $3.49 minus about $0.50, or close to $3.00.

How much you make per paperback

Print royalties have an extra step: the printing cost comes out of your share.

KDP's published paperback terms pay 60% of list price minus printing cost for sales on Amazon (50% for books priced below $9.99 on Amazon.com), and 40% minus printing cost through Expanded Distribution to other retailers.

Printing cost depends on page count, trim size and ink type, so you need your own figure from KDP's calculator. For the sake of the arithmetic only, call the printing cost $4.50 on a $14.99 paperback:

• Sold on Amazon: $14.99 × 60% = $8.99, minus $4.50 = about $4.49.
• Sold through Expanded Distribution: $14.99 × 40% = $6.00, minus $4.50 = about $1.50.

The same book earns three times as much per copy on Amazon as it does through other retailers. Longer books cost more to print, which squeezes your margin further. Use the KDP royalty calculator and the page count calculator to test different prices and lengths before you commit.

IngramSpark works differently again. Your earnings are list price × (1 − the wholesale discount you choose, typically 30–55%) − printing cost. A higher discount makes bookstores more willing to stock you but leaves less for you, so run the numbers in IngramSpark's own calculator.

How Kindle Unlimited page reads work

If your ebook is in KDP Select, KU subscribers can read it without buying it. Amazon pays you for each page read, using its own normalized page count (KENP) for your book and a per-page rate set from a shared fund each month.

The formula is simple: pages read × that month's per-page rate. A subscriber who finishes a book with a KENP count of 300 pages earns you 300 × the rate. The rate changes every month, so check the current figure in your KDP reports rather than relying on a number you saw online.

Two things to know before enrolling:

• KDP Select requires ebook exclusivity. While enrolled, you cannot sell that ebook on Apple, Kobo, Google Play or anywhere else. Print editions are not affected.
• KU pays for finished reading. Long, gripping books that readers finish earn more. Books readers abandon early earn little.

KU suits genres with heavy readers who consume many books a month. Some authors earn most of their income from page reads. Others do better selling "wide" across every store. The only reliable way to know is to compare your own results.

What the maths looks like for a whole year

The table below applies the per-copy figures above to different sales levels. These are illustrations of the formula, not predictions of what you will sell.

Monthly sales	$2.99 ebook (≈$2.09 each)	$4.99 ebook (≈$3.49 each)	$14.99 paperback on Amazon (≈$4.49 each, example print cost)
5 copies	≈$10/month, ≈$125/year	≈$17/month, ≈$209/year	≈$22/month, ≈$269/year
30 copies	≈$63/month, ≈$752/year	≈$105/month, ≈$1,256/year	≈$135/month, ≈$1,616/year
100 copies	≈$209/month, ≈$2,508/year	≈$349/month, ≈$4,188/year	≈$449/month, ≈$5,388/year
500 copies	≈$1,045/month, ≈$12,540/year	≈$1,745/month, ≈$20,940/year	≈$2,245/month, ≈$26,940/year

Ebook figures are before delivery fees. Paperback figures use the $4.50 example print cost, not a real quote.

The pattern is clear: price and royalty rate matter, but sales volume matters far more. Moving from 5 to 100 sales a month changes your income twenty-fold. Raising your price by a dollar changes it a little.

Why more books and formats add up

One book is one product. A catalog is a system where each book helps sell the others.

Say you write a five-book series in one genre, priced at $4.99 each (about $3.49 royalty). A reader who finds book one and enjoys it may buy the rest. If one new reader goes on to buy all five, that reader is worth about $17.45, not $3.49. Your advertising, reviews and word of mouth now pay off five times over.

Read-through is never 100%. Some readers stop after book one, and fewer continue at each step. But even partial read-through means the same effort to find a reader earns several times more.

Formats stack in a similar way. One manuscript can become a Kindle ebook, an EPUB for other stores, a paperback, and sometimes a large-print or hardcover edition. Some readers only buy print. Some only read in KU. Offering more formats means fewer potential readers walk away.

You can see the combined formula like this:

Income ≈ Σ (royalty per format × copies sold in that format) + KU pages read × rate, for every book you publish.

Every term in that sum is something you can influence.

Why most books sell so few copies

Many self-published books sell only a handful of copies, mostly to friends and family. That is usually not because the writing is bad. It is because nobody who would like the book ever sees it. Common reasons:

• No discoverability plan. Publishing a book does not show it to anyone. Stores surface books that already sell, have strong click-through rates or fit what shoppers are searching for.
• Weak packaging. The cover, title and description are your sales pitch. A cover that does not look like other books in its genre tells readers it is not for them.
• Wrong categories and keywords. If your book is filed where its readers do not browse, it stays invisible.
• A single book. With one title, there is nothing to sell next, so paid advertising rarely earns back its cost.
• Low-demand topic or genre. Some subjects simply have fewer buyers. That is fine if you know it going in.
• No reviews. Shoppers hesitate when a book has none.

What changes a book's sales

The authors who earn steadily tend to do the same few things:

1. Write for an identifiable audience. Know which existing books your readers already buy. Your cover, blurb and price should sit comfortably next to those.
2. Write more books in the same lane. A series or a cluster of related non-fiction titles builds read-through. Our guide on how to write a book covers getting from idea to finished draft.
3. Get the metadata right. Strong keywords, accurate categories and a description that hooks in the first two lines. Inkora's publishing kit drafts a description, keywords and BISAC categories alongside the finished manuscript, which gives you a starting point to refine.
4. Build a reader list. An email list lets you tell existing readers about new releases without paying for ads each time.
5. Advertise once there is something to sell through. Ads on a single book often lose money. Ads on book one of a series can pay for themselves through later sales.
6. Publish in every format that makes sense. Inkora exports EPUB, a print-ready interior PDF and a full-wrap cover PDF with the spine width calculated from the page count, so you can release ebook and paperback together. You still upload the files in your own store accounts.

If you are new to the process, start with how to self-publish a book and the Amazon KDP publishing guide.

Common problems and fixes

Your book launched and sales stopped after a few weeks. This is normal. New-release visibility fades. Fix it by publishing the next book, running a price promotion, or sending readers from your email list to leave reviews.

Your paperback royalty is tiny. Check your printing cost. A long book in a small trim size can produce a high page count. A larger trim size may reduce pages and cost, or you may need a higher list price. Recalculate in the KDP calculator.

Expanded Distribution sales pay almost nothing. At 40% minus printing, low-priced paperbacks can earn very little per copy. Either raise the price or accept that wider print distribution is about reach rather than profit.

KU page reads are low. Look at where readers stop. A slow opening or a promise in the blurb that the book does not deliver can cause early drop-off. Tightening the first chapters often helps.

You chose 35% by accident. If your ebook is priced below $2.99 or above $9.99, you are on the lower rate. Moving into the 70% band can roughly double per-copy earnings.

Ads are costing more than they earn. Pause them. Fix the cover and description first, since ads only amplify how well a book page converts. Restart when you have more than one book to sell.

You went exclusive and want to go wide (or the reverse). KDP Select runs in enrollment periods. Turn off auto-renewal and switch when the current period ends.

Author income is not a mystery number. It is royalty per copy times copies sold, repeated across every book and format you publish. Get the per-copy maths right with a calculator, then put your energy into the part that moves the total most: more good books, aimed clearly at readers who already buy books like yours.