Book Royalty Calculator
Calculate net author royalties and earnings per copy across Amazon KDP, IngramSpark, and bookstores, modeling print deductions and distribution discounts.
Retail List Price & Royalty Deductions
Net Author Royalty Formula
Direct POD: Net Royalty = (List Price × Royalty %) - Printing Cost - Delivery; Wholesale: Net Royalty = List Price × (1 - Wholesale Discount %) - Printing Cost- KDP Paperback Tier: Amazon pays 60% royalty on list price minus the printing cost of the book.
- KDP Ebook Tier: Amazon pays 70% royalty on ebooks priced between $2.99 and $9.99 (minus digital delivery fees of $0.15/MB), and 35% on other prices.
- Expanded / Wholesale Distribution: Standard bookstore distribution (IngramSpark) requires offering a 55% wholesale discount to retailers and distributors.
- Net Profit Margin: Author net earnings expressed as a percentage of the customer retail price.
Step-by-Step Worked Example
Calculation Steps:
- Gross Royalty = $15.99 × 0.60 = $9.59.
- Net Royalty Per Copy = $9.59 - $4.15 = $5.44.
- Author Net Royalty Margin = ($5.44 / $15.99) × 100 = 34.0%.
- Amazon Share + Print Cost = $15.99 - $5.44 = $10.55.
- Projected Author Earnings (500 copies) = 500 × $5.44 = $2,722.00.
How to Use This Calculator
- 1Enter your book retail list price in USD.
- 2Select your royalty plan percentage (60% for KDP paperbacks, 70% for KDP ebooks).
- 3Input the manufacturing print cost per copy.
- 4If selling through traditional bookstores via Ingram, specify the wholesale discount (typically 55%).
- 5Enter projected sales units to calculate total author revenue.
Assumptions & Limitations
- Calculations follow official Amazon Kindle Direct Publishing (KDP) and IngramSpark royalty deduction schedules.
- Author earnings reflect pre-tax net income.
Frequently Asked Questions
How much money does an author make on a $15 paperback?
On Amazon KDP, a $15.00 paperback with a 300-page interior ($4.60 print cost) yields: ($15.00 × 0.60) - $4.60 = $4.40 net royalty per copy sold. If sold through bookstores via expanded distribution with a 55% discount, the author makes ($15.00 × 0.45) - $4.60 = $2.15.
Why does Amazon take 40% of paperback sales?
Amazon’s 40% cut covers their platform hosting, credit card transaction processing, customer service, marketplace search algorithms, and warehouse distribution logistics.
What is the most profitable price for a self-published ebook?
Between $2.99 and $9.99, which qualifies for Amazon’s 70% royalty rate. At $4.99, an author earns approximately $3.45 per download. Above $9.99 or below $2.99, Amazon reduces the royalty to 35%.
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