Ebook Income Calculator

Realistic monthly net income ranges widely. New indie authors with one ebook on a single platform typically see $0 to $200 in the first 3 months. Authors with 5 to 10 ebooks in a focused niche can reach $500 to $5,000 per month after 12 to 24 months. The 2024 Authors Guild and ALLi indie author income surveys both show median earnings clustered far below the marketing claims you see on YouTube. The calculator on this page lets you plug in your own assumptions instead of relying on averages.

Most non-fiction ebooks convert best between $5 and $25. Lead magnets are often free or pay-what-you-want. Premium how-to guides with bonuses reach $29 to $49. Amazon's 70% royalty band is locked between $2.99 and $9.99, which pushes a lot of KDP authors into that range; Gumroad and Apple Books have no equivalent restriction. Try a few prices in the calculator above to see how each affects your net.

There's no single number, but indie authors hitting full-time income (~$50K+/year net) typically have 5 to 15 ebooks live, in a focused niche, with consistent volume of 30 to 100 sales per book per month. Get to that point and the calculator will show realistic five-figure annual projections. The first book alone almost never gets there.

Per-sale, Gumroad and Payhip leave the most in your pocket (you keep 87 to 95%). Amazon KDP's 70% royalty is competitive but only inside the $2.99 to $9.99 band; outside it you drop to 35%. Apple Books and Kobo Writing Life both take 30%. Volume matters more than rate though: Amazon's built-in audience can mean a lower royalty percentage still outearns a 90% cut on a platform with no traffic.

Partially. The book file once published doesn't need rewriting, so a sale at 2 a.m. while you're asleep is real. But the marketing, ad spend, list-building, and cover refreshes that drive volume are not passive at all. Expect to actively promote each book for the first 90 days post-launch and then update at least quarterly to keep momentum.

Gumroad: flat 10% plus payment processing. Amazon KDP: 35% royalty for prices outside the $2.99-$9.99 band, 70% inside it (Amazon takes the rest plus a delivery fee on the 70% rate). Apple Books: 30% to Apple. Kobo Writing Life: 30% on books under $2.99, 70% above. Payhip: 5% on free tier, 0% on paid plans (you pay a flat monthly instead). Full per-sale math is on our companion royalty calculator page.

If you have an existing email list of 500+, often within 24 hours of launch. Cold (no audience), most indie authors report 3 to 14 days for the first sale on Amazon KDP via search and 7 to 30 days on Gumroad without paid promotion. The bigger predictor is whether you launch with a list, not which platform you choose.

Yes, unless you've enrolled in Amazon KDP Select, which requires Amazon-only exclusivity for 90 days. Most indie authors list on Amazon KDP plus one or more of Gumroad, Apple Books, Kobo, and Payhip. Multi-platform listing typically increases monthly net by 20-50% versus single-platform, depending on niche.

Industry benchmarks for direct ebook sales to an email list cluster between 1% and 5% on launch day, with 0.3% to 1% monthly thereafter from your subscriber base. So a 1,000-person list can reasonably produce 10 to 50 launch-day sales and 3 to 10 monthly recurring sales. Multiply by your price and the calculator gives you a launch month projection.

One niche, almost always. Niche authors who publish 5 ebooks on the same topic see compound effects: cross-linking inside each book pushes readers to others, marketing assets are reusable, and the catalogue authority on that one topic builds quickly. Authors who jump topics start from zero each time.

Disclosed AI-assisted books earn comparably to human-written books on Gumroad (Gumroad has no specific AI policy as of April 2026). Amazon KDP requires AI disclosure during submission and applies it to listings; sales data isn't publicly broken out by AI vs human. Quality of writing, niche fit, cover design, and marketing all matter more than the AI question for revenue outcomes.

This page projects total monthly and yearly income across your whole ebook catalogue. The royalty calculator focuses on per-sale math (what one sale at one price on one platform actually nets you). Use the royalty calculator to set your price; use this calculator to plan your monthly business.

First sale within 24 to 72 hours of launch is normal if you have any email list at all (even 200 names). With no audience, expect 7 to 30 days for your first organic sale on Gumroad and 3 to 14 days on Amazon KDP via search. Reaching $1,000 net per month typically takes 9 to 18 months of consistent publishing in one niche.

Partially. The book file itself doesn't need rewriting after launch, so the sale at 2 a.m. while you sleep is genuinely passive. The marketing, ad spend, list-building, cover refreshes, and quarterly file updates that keep volume up are not passive at all. Realistic frame: ebooks are leverage, not autopilot. You put in marketing work that compounds rather than work that resets every month like consulting.

For a $14 ebook on Gumroad, ad spend is profitable when blended cost per acquisition is roughly under $5. That sets your daily budget by working backwards from your acceptable break-even sales rate. Most indie authors who profitably run ads spend $5 to $30/day on Amazon Sponsored Products or Meta Ads, scaling up only after the first profitable cohort. Don't run ads on book one before you have organic conversion data.

Quality, niche fit, cover, and marketing matter far more than the AI question for revenue outcomes. Disclosed AI-assisted books on Gumroad earn comparably to human-written ones (Gumroad has no AI policy as of April 2026). Amazon KDP requires AI disclosure at submission. Sales data isn't broken out by AI vs human anywhere public, but anecdotal indie author reports cluster on "makes no measurable difference" once book quality is comparable.

First 90 days: 5 to 30 total sales is common with a small email list and no paid promotion. Months 4-9: 30 to 100 sales/month across the catalogue once 2-3 books are live. Months 10-18: 100 to 400 sales/month if niche-fit is real. The single biggest accelerator is publishing book 2 and 3 in the same niche; cross-sales lift total volume more than any single marketing tactic.

Non-fiction sweet spot: 15,000 to 30,000 words (about 60 to 120 pages). Long enough to feel substantive, short enough to actually finish reading. Fiction: 50,000 to 70,000 words for novels, 15,000 to 25,000 for novellas. Length and price aren't tightly correlated for indie ebooks; a 20,000-word focused guide can sell for $19 if the topic is high-value. Don't pad to hit a word count.

Pen names work fine for fiction and for non-fiction in niches outside your professional brand. The economic difference is essentially zero on Gumroad, Apple, Kobo, and Payhip. On Amazon KDP, your author central page is name-bound, so you'd run two pen names = two author central setups. For most indie authors, the choice comes down to brand strategy, not income optimization.

Almost always yes. Amazon's discovery (search, Also Bought, Kindle Unlimited if you opt in) is something Gumroad simply can't match. Authors who add KDP after 90 days of Gumroad-only typically see total monthly net rise 30 to 80%, with most of the lift coming from buyers who never would have found them through their existing channels. The only reason to skip KDP is if KDP Select exclusivity is incompatible with your existing direct-sales relationships.

Genuinely $0 if you write it yourself, design the cover with free tools, and publish to Gumroad / KDP / Apple (no upfront fees on any of those). Realistic spending: $0 to $50 on a cover designer (Canva Pro or Fiverr), $0 to $30/month on writing software, $0 to $200 on ads in the first 90 days. Many indie authors launch their first book for under $50 total.