Royalty Calculator
Calculate author earnings from royalty rates and sales.
About this calculator
Royalty Rate is a convention that varies enormously by publishing path -- traditional print deals typically run roughly 8-15% of list price, while self-published ebooks through platforms with royalty-tier programs can run 35-70%, so this calculator treats it as a plain input you set for your own deal rather than a fixed constant. Gross Royalty / Book is simply List Price multiplied by that rate, so it rises directly with either figure. Agent Commission is then subtracted from the gross figure, not from the list price, which is why Net Royalty / Book falls as Agent Commission rises but never falls faster than the gross royalty itself allows -- a self-published author paying no agent keeps 100% of Gross Royalty / Book as their net figure.
Total Earnings is Net Royalty / Book multiplied by Units Sold, so it scales linearly with sales volume and is the only figure Units Sold affects at all -- it has no bearing on the per-book royalty math. Units for $10K and Units for $50K work backward from Net Royalty / Book to answer a different question: how many copies would need to sell to reach each earnings milestone. A higher net royalty per book (from a higher list price, a higher royalty rate, or a lower agent commission) always lowers the sales volume needed to hit either milestone.
Inputs
Results
Total Earnings
$10,200.00
≈ 7 months of rent
How to Use This Calculator
- Enter List Price, Royalty Rate, and Units Sold.
- Set Agent Commission.
- Review the Total Earnings ($) result.
- Use Net Royalty / Book ($) and Gross Royalty / Book ($) to inform your decision.
How the result changes with Units Sold
| Units Sold | Total Earnings |
|---|---|
| 2,500 | $5,100.00 |
| 3,750 | $7,650.00 |
| 7,500 | $15,300.00 |
| 12,500 | $25,500.00 |
What each input means
- List Price
- Retail price of the book.
- Royalty Rate
- Royalty percentage (trad pub ~8-15%, self-pub ~35-70%).
- Units Sold
- Total number of copies sold.
- Agent Commission
- Literary agent commission (typically 15%, 0% if self-pub).
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersList Price = 15.99, Royalty Rate = 15, Units Sold = 5000, Agent Commission = 15 = 4 input(s) provided
- Calculate Total EarningsTotal Earnings10200 = $10,200
- Calculate Net Royalty / BookNet Royalty / Book2.04 = $2.04
- Calculate Gross Royalty / BookGross Royalty / Book2.4 = $2.4
Engine last updated . Checked against 2 independently-derived tests — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.
Frequently Asked Questions
Does Units Sold affect Net Royalty / Book or Gross Royalty / Book?
No. Units Sold only scales Total Earnings, which is Net Royalty / Book multiplied by copies sold. The per-book royalty figures are set entirely by List Price, Royalty Rate, and Agent Commission, and stay the same whether you sell ten copies or ten thousand.
Is Agent Commission taken from the list price or from the royalty?
From the royalty. Agent Commission is calculated as a percentage of Gross Royalty / Book, not of List Price, so it only ever reduces the royalty income an agent already negotiated -- it does not touch whatever portion of the list price goes to the publisher or retailer.
Why do traditional and self-published royalty rates look so different?
Traditional publishing deals typically pay authors roughly 8-15% of list price because the publisher covers printing, distribution, and marketing costs out of the remainder. Self-published authors keep a much larger share, commonly in the 35-70% range on platforms with tiered royalty programs, because they take on those costs themselves -- neither figure is universal, so enter your actual contract or platform rate for an accurate result.
What do Units for $10K and Units for $50K actually tell me?
They work backward from your calculated Net Royalty / Book to show how many copies would need to sell to reach $10,000 or $50,000 in total earnings at that same per-book rate. Raising your royalty rate, raising your list price, or lowering your agent's commission all lower the number of units required to hit either milestone.
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