How is book indexing priced?

Most indexers price by the indexable page, though some quote by the hour or per entry. Price depends on the book's length, subject complexity, the depth of index required, and the turnaround time.

Why are book indexes expensive?

A good index is skilled editorial work, not automatic keyword extraction. A professional indexer reads the whole book and makes judgment calls about which concepts matter, how to group and cross-reference them, and how to structure entries for readers.

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Pricing Guide · 2026

How Much Does a Book Index Cost?

Q: How much does a book index cost?

Professional book indexes typically cost $2.50 to $4.00 per typeset page, or roughly $750 to $1,200 for a 300-page book. AI-assisted draft indexes cost significantly less, often around $1.50 per page.

Q: Can AI make indexing cheaper?

Yes. An AI-assisted draft index can be produced faster and at lower cost. For a polished, publication-ready result, that draft is then reviewed and edited by a professional indexer.

If your nonfiction book needs an index, the first question is almost always the same: what should this cost? Here's an honest, up-to-date answer — plus what drives the price and how to pay less without sacrificing quality.

The short answer: a professional back-of-book index typically costs $2.50 to $4.00 per typeset page — roughly $750 to $1,200 for a 300-page book. A faster, AI-assisted draft index costs less, often around $1.50 per page.

How book indexing is priced

Indexers usually quote in one of three ways, and the first is by far the most common:

Per indexable page — the standard method. You're charged for each typeset page that actually contains index-worthy content (front matter and blank pages don't count).
Per hour — some indexers quote an hourly rate, commonly in the $40–$70 range, and estimate the total from the page count.
Per entry — less common, and harder to predict before the work is done.

Per-page pricing is popular because it's predictable: you know the total before work begins. Professional organizations like the American Society for Indexing report typical rates of about $2.50–$4.00 per page.

What affects the price

Two books of the same length can cost very different amounts to index. The main factors:

Length

More pages means more to read, analyze, and structure — so longer books cost more overall, even at the same per-page rate.

Subject complexity and density

A dense scholarly monograph or a technical manual — packed with names, concepts, and terminology — takes far more judgment to index than a lightly-referenced trade book. Complex subjects sit at the higher end of the range.

Depth of index

A concise index that captures only key concepts is quicker (and cheaper) than a detailed index with layered subentries and extensive cross-references. Your publisher or subject may dictate how thorough it needs to be.

Turnaround

Standard timelines are priced normally; a genuine rush — a few days instead of a couple of weeks — usually carries a premium, because it means clearing the decks for your project.

Format

A standard back-of-book index delivered in Word or RTF is the norm. Embedded indexing (tagged directly in the manuscript file) is more labor-intensive and priced accordingly.

Why does an index cost that much?

It's a fair question — especially now that software can generate a word list in seconds. The answer is that a real index isn't a word list. A professional indexer reads the entire book and makes hundreds of editorial judgments: which concepts are actually index-worthy (and which are passing mentions), how to gather synonyms and variants under a single heading, when to break a topic into subentries, and how to add the cross-references that help a reader find what they're looking for. That conceptual work — understanding the book, not just scanning it — is what you're paying for, and it's what separates a genuinely useful index from an unusable one.

Can AI make indexing cheaper? Yes — carefully.

This is where pricing has genuinely changed. AI can now produce a solid first-pass draft index quickly, which opens up a more affordable option — as long as you understand what each tier gives you:

An AI-assisted draft index is fast and low-cost, well suited to budget-sensitive titles, internal documents, and tight deadlines. It should be clearly labeled as an AI draft rather than presented as a finished professional index.
An AI-assisted, human-edited index combines the speed of an AI draft with the judgment of a professional indexer who reviews, corrects, and shapes it. You get most of the time savings while keeping the editorial quality a publisher expects.

The result is that you no longer have to choose between "expensive and professional" and "cheap and unusable." You can pick the level of human editing your project actually needs.

How to get an exact price for your book

Because the real number depends on your specific page count, subject, and depth, the honest way to price an index is to look at the actual book. A good indexer will confirm a firm quote before any work begins — no surprises.

Related: How to hire a professional book indexer — what to look for, questions to ask, and how the process works.

Get a quote for your book

Clear Indexing offers a fast, affordable Express index and a fully human-edited Professional index — both done for you by a professional indexer. Send us your manuscript and we'll confirm your exact price and delivery date, usually within a few hours.

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