Print-on-demand means each copy of your book is printed individually, only after a reader orders it, rather than printing a large batch upfront and storing the extras. That single shift changes nearly everything about the economics and logistics of self-publishing print books.
This is part of the Complete Guide to Self-Publishing.
You upload a print-ready interior file and cover file to a print-on-demand service. When a reader orders a copy, whether from Amazon, a bookstore, or the service's own storefront, that specific copy is printed, bound, and shipped, typically within a few days. No copy exists until someone orders it.
No upfront inventory cost. Traditional print runs require paying for hundreds or thousands of copies upfront, then storing and shipping them yourself. Print-on-demand eliminates that entirely: you pay nothing until a copy sells.
No risk of unsold stock. With a traditional print run, unsold copies are a sunk cost. With print-on-demand, there's no such thing as an unsold copy; nothing is printed until it's ordered.
Lower barrier to entry. Because there's no upfront printing investment, print-on-demand is what makes self-publishing print books financially accessible to authors without significant capital.
Slightly higher per-copy cost. Printing one copy at a time is inherently less efficient than printing thousands at once, so the per-copy manufacturing cost on print-on-demand tends to run somewhat higher than a large traditional print run. For most self-published authors, especially on a first book, the elimination of upfront risk outweighs that cost difference.
Your royalty on a print-on-demand book is typically the list price minus the printing cost, which is calculated based on page count, trim size, color (black and white interior vs. color), and paper type. Longer books, larger trim sizes, and color interiors all cost more to print, which either reduces your royalty or requires a higher list price to maintain the same margin.
The two most commonly used by self-published authors are Amazon KDP (integrated directly with Amazon's marketplace, and the default choice for authors focused primarily on Amazon sales) and IngramSpark (which distributes to a much wider network of bookstores, libraries, and retailers beyond Amazon, at the cost of a bit more setup complexity and, in some cases, small per-title fees). Many authors use both: KDP for Amazon sales, IngramSpark for everything else. See Wide Distribution vs. Amazon Exclusive for how this decision plays out for ebooks specifically.
Traditional (offset) printing, printing a large batch at once, still makes sense in specific situations: very high sales volume where the lower per-copy cost at scale outweighs the upfront risk, special editions, or bulk orders for events and signings where you want physical stock on hand. For most self-published authors starting out, print-on-demand's lack of upfront risk makes it the more practical default, with the option to add a traditional print run later if sales justify it.
See What "Print Ready" Actually Means for the technical details of preparing these files correctly.
Print-on-demand quality has become very reliable for standard trade paperback and hardcover formats, and most readers can't tell the difference between a print-on-demand copy and a traditionally printed one. It's not the right fit for every project (highly specialized formats, unusual trim sizes, or premium finishes may have limited or no print-on-demand options), but for the large majority of self-published fiction and nonfiction, it's the standard, sensible choice.
Get Your Files Ready for Print-on-Demand
Entrada Publishing's layout team prepares interior and cover files to the exact specifications print-on-demand platforms require.
Not meaningfully, for most standard formats. Modern print-on-demand quality is generally reliable and difficult for readers to distinguish from traditionally printed books, though highly specialized formats may have more limited options.
No. That's the core advantage: nothing is printed, and nothing is paid for, until a copy is actually ordered.
KDP is integrated directly with Amazon's marketplace and is the simpler default for Amazon-focused sales. IngramSpark distributes to a much wider network of bookstores, libraries, and other retailers, with more setup complexity.
At high sales volume, where the lower per-copy cost at scale pays off, or for special editions and bulk orders where you want physical stock on hand for events.