Book income calculator
Book Income Calculator: Royalties vs Back-End Offers
To find how many books you need to sell to make $100,000, divide $100,000 by what you earn per copy, which is the book price times your royalty rate.
This calculator from the Author Funnel Guide, published by Book Profits Club, uses only the numbers you enter. It shows yearly royalty income, what a coaching or premium offer could add if a share of readers become clients, and how many copies $100,000 from royalties alone would take.
Last updated: Published by Book Profits Club
How much does an author make on a $25 book?
An author makes $25 times their royalty rate per copy, minus any printing or distribution costs their contract or platform deducts. Royalty rates are set by your publishing contract or self-publishing platform, so check your own terms and enter them below.
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The formulas this calculator uses
Earnings per copy equal the book price multiplied by your royalty rate. Yearly royalty income equals earnings per copy multiplied by copies sold. Back-end offer income equals the number of readers who become clients (copies sold times your conversion percentage, rounded down) multiplied by your offer price. Copies needed for $100,000 equal $100,000 divided by earnings per copy, rounded up.
The Author Funnel Guide from Book Profits Club includes this tool because it makes the core idea of an author sales funnel visible: royalty income grows only with copies, while a back-end offer lets a small share of readers who want more help create a meaningful part of your income. The calculator does not include costs, taxes, refunds, or fees, and every figure depends entirely on the numbers you enter.
This page is part of our book marketing strategy guide for authors, which explains the full path from book launch to high-ticket offers.
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Common questions
How many books do I need to sell to make $100,000?
Divide $100,000 by what you actually earn per copy after retailer and printing costs. Your per-copy earnings depend on format, price, and your platform or publisher terms, so check your own numbers. Because the result is often a large number of copies, many authors add back-end offers; our book income calculator compares both paths.
How much does an author make on a $25 book?
It depends on the author’s royalty rate, which is set by the publishing contract or the self-publishing platform, minus any printing or distribution costs. Multiply the price by your royalty rate to get per-copy earnings. Your contract or platform dashboard shows the exact figure, and our calculator can project totals from it.
Is it better to earn from royalties or from back-end offers?
Royalties are earned per copy, so that income grows only with sales volume. Back-end offers such as coaching or a mastermind can earn far more per reader who chooses to go deeper. Most authors who build a business use both: the book creates trust, and the funnel gives interested readers a next step.
What is a high-ticket offer for an author?
A high-ticket offer is a premium product or service priced well above the book, such as coaching, a mastermind, consulting, or a speaking engagement. It sits at the top of the author sales funnel. Book Profits Club offers High-Ticket Sales Mastery training focused on refining your closing approach and structuring offers to command premium prices.
How much does Book Profits Club cost?
Book Profits Club has three membership levels: Standard is free, Premium is $47 per month, and VIP Elite is $97 per month. Standard includes community access, basic resources and guides, and a general support forum. Premium and VIP Elite add calls, templates, and more direct support. Training availability varies by membership level.