How Many Books Must You Sell To Break Even?

Break-even is the point where the money your book has earned finally equals the money you spent to publish and promote it. Before that point you're in the red; after it, every sale is mostly profit. It's one of the most useful numbers a self-publisher can know, and most never calculate it.

Start by totalling everything you spent on the book: cover design, interior formatting, illustrations, editing, any software or keyword tools, and your advertising budget. Include costs paid over time, like monthly subscriptions and ongoing ad spend — they count even though they don't all land upfront. This total is your investment.

Here's where people go wrong: they divide by their royalty instead of their actual profit. For a print book, profit is the royalty minus the printing cost — and minus ad cost per sale if you're advertising. Using the royalty makes break-even look closer than it really is. Use the real profit per sale.

It's simple: divide your total investment by your profit per sale, and round up. That's how many copies must sell before you've recovered everything. Multiply that by your list price and you'll also see the revenue the book needs to generate.

Say you spent $50 on a cover, $150 on ads, $20 on software, and $30 on other costs — $250 total — and your profit is $2.50 per sale, with the book priced at $9.99. Break-even sales: $250 ÷ $2.50 = 100 sales. Revenue needed: 100 × $9.99 = $999.

So this book has to sell 100 copies before it earns you a single dollar of profit.

A hundred sales sounds quick until you're a new author with no reviews and little visibility. Most KDP books sell a handful of copies a month at first and build slowly as reviews and rankings grow. Expecting to break even in days is the fastest route to disappointment — months is normal.

Two levers move it: spend less upfront, or earn more per sale. Cap your ad budget until you know which keywords convert, validate your cover before pouring money into ads, and price for a healthy profit per copy. A higher profit per sale shrinks the number of copies you need — often more easily than chasing extra traffic.