The Side Hustle Podcast with Fexingo: Part-Time Businesses, Passion Projects, and Extra Income · Episode 148 · August 3, 2026 · 6 min

How a Part-Time Book Indexer Earns 7000 Monthly

In this episode, we talk to a former librarian who turned a love of reading into a lucrative side hustle: freelance book indexing. With no formal training, she now earns around $7,000 a month indexing nonfiction books for publishers and self-published authors. We break down how she got started, what the work actually involves, and why it's a hidden gem for detail-oriented readers. She shares her realistic timeline, the tools she uses, and how she landed her first clients without a portfolio. If you've ever thought about turning your bookish habits into income, this conversation is for you. #BookIndexing #FreelanceIndexing #SideHustle #PartTimeBusiness #PassionProject #ExtraIncome #Freelance #BookLover #DetailOriented #RemoteWork #Publishing #SelfPublishing #WorkFromHome #Business #FexingoBusiness #BusinessPodcast #SideHustlePodcast #FreelanceLife Keep every episode free: buymeacoffee.com/fexingo

Transcript

Lucas: So there's this corner of the publishing world that most readers never think about, but every nonfiction book has one. It's the index at the back, and someone has to build it. That someone is a book indexer, and it's a surprisingly lucrative side hustle. Luna: Wait, I thought the author wrote the index. You're telling me there are people who do that for a living? Lucas: Mostly, yes. Authors are often too close to their own work to index it well, and publishers rarely want to pay a full-time employee to do it. So they hire freelance indexers. Today's guest, Claire, is a former librarian who started indexing part-time and now makes around seven thousand dollars a month. Luna: Seven thousand? That's serious money for a side hustle. How did she get into it? Lucas: She started exactly the way you might expect: she loved reading, she loved organizing information, and she wanted to earn extra income from home. She stumbled on indexing through a library association newsletter, took an online course, and within six months she had her first paid gig. Luna: What does the actual work look like? I'm imagining someone sitting with a highlighter and a stack of pages. Lucas: It's more digital than that these days. She works mostly in Microsoft Word or Adobe InDesign with specialized indexing software. The process is reading the page proofs, marking terms, concepts, and names that a reader might search for, and then generating a structured index that's alphabetical and cross-referenced. Luna: So it's part reading, part database design. That actually sounds like it takes a certain kind of brain. Lucas: Exactly. You need to think like a reader: what would someone look up? But you also have to think like an editor, catching inconsistencies and deciding when a term deserves its own entry versus a subentry. It's detail work, but it's not monotonous because every book is different. Luna: How long does one book take? And what does she charge? Lucas: A typical nonfiction book, say three hundred pages, takes her about forty to fifty hours. She charges per page, usually around five to seven dollars a page, so that works out to roughly fifteen hundred to two thousand dollars per book. She does three to four books a month. Luna: That's a solid hourly rate when you do the math. But how do you get clients when you're starting out and you have no portfolio? Lucas: That's the part I wanted to dig into. Claire didn't have any published indexes to show, so she created a mock index for a well-known book, like a popular business title, and put it on her website. She also reached out to small publishers directly and offered a discount for the first project. Luna: A discount? That's a bold move. Did it work? Lucas: It took about a dozen emails, but the third publisher she contacted took her up on it. That one job led to two more through word of mouth. She says the hardest part was that first project; once she had a real reference, everything got easier. Luna: So is this something anyone can do, or do you need a library science degree? Lucas: She says no formal degree required, but you do need to be a strong reader with excellent attention to detail. There are professional organizations like the American Society for Indexing that offer training and certification, but she didn't get certified until after she had a few jobs under her belt. Luna: I love that. It's a skill you can learn on the job. But what about the tools? Is she paying for expensive software? Lucas: She started with a free trial of a program called Cindex, which is the industry standard, and then paid for the full license once she was earning. It's about five hundred dollars, but she recouped that on her first book. There are cheaper options, but Cindex is what most publishers expect. Luna: So the startup costs are minimal. That's refreshing for a side hustle. What's the biggest challenge she faces now? Lucas: For her, it's managing the workload during peak season. Publishers often have strict deadlines, and she's had to turn down work because she couldn't fit it in. She also says the isolation can be real; you're staring at a screen alone for hours. But she's found a community of indexers online, which helps. Luna: That makes sense. It's a solo gig, but you don't have to be completely alone. Do you think this is a sustainable side hustle long-term? Lucas: She thinks so. She's been doing it for three years now, and she's never short on work. The self-publishing boom has actually increased demand, because self-published authors need indexes too, and they're willing to pay for quality. She's even considering going full-time eventually. Luna: That's a nice position to be in. So for our listeners who might be thinking, 'I love reading and I'm detail-oriented,' what's the first step? Lucas: Claire's advice is to take an indexing course, join the American Society for Indexing, and start practicing on books you already own. Then build that mock portfolio and start pitching small publishers. It's not a get rich quick thing, but it's a real skill that pays well and you can do it from anywhere. Luna: And you get to read for a living. That's the dream. Before we wrap up, Lucas, I have to say, if today's episode gave you a new idea for your own side hustle, that's exactly why we make this show. Lucas: And if it was worth a coffee to you, that's the smallest way to support us. You can find us at buy me a coffee dot com slash fexingo. It keeps the podcast ad-free and helps us bring you more stories like Claire's. Luna: We don't have a big team, so every little bit genuinely helps. But no pressure at all. We're just glad you're here. Lucas: Exactly. And speaking of stories, there's one more thing I want to touch on before we go. Claire mentioned that she's seen a rise in demand for indexes in academic journals and even in video game manuals. That's a niche within a niche. Luna: Video game manuals? That's wild. So the skills are transferable to other types of content. Lucas: Definitely. She's thinking about expanding into technical documentation and online help systems, which pay even better. So if you start with books, you're not stuck there; you can grow into other areas. Luna: That's a great way to think about any side hustle. Start with one niche, then leverage it into something bigger. Thanks for sharing this, Lucas. I feel like I learned a lot today. Lucas: Thanks, Luna. And thanks to our listeners for tuning in. If you have a side hustle story you want us to feature, let us know. Until next time, keep building something on the side.