What Is Print on Demand Publishing?How It Works and Whether It Is Right for Your Book

How Print on Demand Actually Works

Traditional publishing requires a print run — a minimum quantity of physical books (typically 500 to 3,000 copies) printed in advance and stored in a warehouse. The publisher pays for all copies upfront and manages inventory, shipping and returns. Unsold copies are a direct cost.

Print on demand eliminates the print run entirely. When a reader on Amazon orders your book, Amazon's KDP print facility produces a single copy and ships it directly to the reader. The author pays nothing upfront. The printing cost is deducted from each sale before the royalty is paid. There is no inventory to store, no unsold copies to write off and no minimum order quantity.

This model makes physical book publishing economically viable at any sales volume. A book that sells 10 copies a month is as sustainable on KDP as a book that sells 10,000 copies a month. The per-copy economics are the same regardless of volume.

The Two Platforms: KDP and IngramSpark

Amazon KDP is the print-on-demand platform for Amazon marketplaces globally. A book set up on KDP is available as a Prime-eligible product on Amazon in the US, UK, Germany, France, Italy, Spain, Japan, Canada, Australia and other Amazon markets. Orders are fulfilled by Amazon's print facilities and shipped within Amazon's standard delivery windows.

IngramSpark is the print-on-demand platform for the non-Amazon global book market. Through Ingram's wholesale network, a self-published book becomes available for ordering by 40,000 or more retailers, libraries, schools and distributors worldwide. Independent bookshops use Ingram's catalogue. Public library systems use Ingram's catalogue. International distributors use Ingram's catalogue. A book that is not on IngramSpark is invisible to all of these buyers.

The correct strategy is to use both platforms simultaneously. KDP covers Amazon. IngramSpark covers everyone else. Setting up IngramSpark requires correct wholesale discount settings (typically 55% to make profitable ordering possible for distributors) and a clear returns policy. Getting these wrong is the most common reason a self-published book appears on IngramSpark but cannot actually be ordered. See the complete print on demand guide for setup detail.

Print on Demand Quality

The quality of print-on-demand books from KDP and IngramSpark is professional. The printing uses digital presses at quality levels that are indistinguishable from offset-printed books for most fiction, non-fiction, business and self-help titles. Black and white interiors are crisp and consistent. Full-colour interiors are vibrant with accurate CMYK reproduction when files are prepared correctly.

The areas where offset printing has a visible quality advantage are: very high-volume full-colour books (photography, coffee table books) where the cost per copy at large print runs makes offset economically superior, and book types requiring special finishes (embossed covers, spot UV, custom paper stocks) that digital printing cannot replicate.

For the majority of self-published titles, print on demand quality is excellent and the cost savings versus a traditional print run are decisive. For high-volume events, corporate bulk orders or books requiring special print finishes, see professional book printing services for offset and short-run printing options.

Royalties on Print on Demand Books

Amazon KDP pays approximately 60% of the list price minus the per-copy printing cost. For a standard 250-page black and white 6x9 trade paperback, the printing cost is approximately $3.85. At a list price of $14.99: royalty = (14.99 x 0.60) - 3.85 = $9.00 - $3.85 = approximately $5.14 per copy.

IngramSpark's royalty structure is based on the wholesale discount the author sets. At a 55% wholesale discount on a $14.99 book, the author receives $14.99 x 0.45 = $6.75 minus the printing cost. IngramSpark printing costs are similar to KDP. For both platforms, the author's earnings per copy are significantly higher than traditional publishing royalties at any comparable price point.

For the full royalty comparison including eBook and audiobook, see the self-publishing cost guide.

When a Traditional Print Run Makes Sense

Print on demand is the right model for most self-published books. Traditional offset print runs make economic sense in specific circumstances: bulk orders of 500 or more copies where the per-copy price drops below print-on-demand rates, books with special production requirements (embossing, specialty paper, French flaps), and books for events, conferences or corporate distribution where the author needs physical inventory immediately.

See book printing services for bulk and offset printing options alongside the print-on-demand model.

Frequently Asked Questions