The book I wrote so my kids would learn about money. A ledger-based allowance system where the link between work and pay does the teaching.

I broke my collarbone on my road bike. The kind of injury where one arm is suddenly useless for weeks. I couldn't ride. I couldn't work the way I usually work. I couldn't do much of anything. I was going absolutely crazy.

So I wrote a book. The ledger system had been working in our house for years. Refined through trial-and-error with my own three kids. I had the material. I finally had the time. I sat down and turned what we'd been doing at home into something other parents could pick up and use.

This was before AI. There was no model to write it for me. So yes, I actually wrote this book.

Kid Ledger 5000 is a system for teaching kids about money. The mechanism is a ledger: parents define the contributions that matter in the house, kids earn entries for completing them, and entries spend like real money. The whole thing runs on paper. No apps. No screens.

The thing I wanted my kids to understand was the connection between work and money. Not abstractly, but as something they felt every week. A ledger does that. When a kid completes a job, they see the entry. When they want to buy something, they look at the ledger and decide if it's worth spending. The lesson is in the loop, not in the lecture.

In practice, it's two pieces. Parents define the household contributions that have real value, and assign a payment amount to each one. Kids choose what to do, track their earnings in the ledger, and spend the way an adult spends: from a balance they can see, on things they decide are worth it. The book is at kl5k.com. Step-by-step instructions, templates, and worked examples ready to drop into the household.