Author Business Formulas Quick Reference Card: Royalty, Amazon Ads, Series Math & Reader Lifetime Value for KDP & Indie Authors

Stop guessing what your books actually earn. The Author Business Formulas Quick Reference Card is the ultimate printable cheat sheet every KDP and indie author needs on their desk.

Print it. Pin it. Reference it daily. This 7-page powerhouse gives you every critical royalty, launch, ads, series, and reader value formula — with real examples — so you can make smart business decisions fast.

What’s Inside (27+ Formulas & Examples):

• Royalty Formulas (All Platforms) – KDP ebook (70% & 35%), paperback, hardcover, KU page reads, IngramSpark, and ACX audiobook royalties with exact examples
• Launch & Amazon Ads Math – ACoS, break-even ACoS, real profit after ads, CPC, conversion rate, launch momentum targets, and BookBub ROI
• Series & Read-Through Metrics – Read-through rate, full series read-through, series lifetime value (SLV), loss-leader math, box set pricing, and backlist boost
• Reader Lifetime Value Formulas – Reader acquisition cost (RAC), SLV:RAC ratio, email list conversion, revenue per subscriber, sales rank → daily units, and monthly income per book
• Key Numbers Every Indie Author Should Track + pro tips on what the numbers actually mean for your next book

Perfect for fiction and nonfiction authors scaling a KDP, IngramSpark, or hybrid author business. No more spreadsheets or guesswork — just clear, ready-to-use math that professional indie authors live by.

Instant digital download – high-resolution printable PDF. Laminate it or keep it next to your keyboard.

Who this is for: KDP authors, indie authors, self-publishers, series writers, and anyone serious about treating their author career like a real business.

✅ Instant access
✅ Lifetime updates
✅ Print-ready layout

Pro tip: Authors who know their numbers write the right books, price them correctly, and scale profitably. This quick reference card is your daily business brain.

Ready to run your author business like a pro? Add to cart and get your formulas today.