I wanted to report gains from trading to tax authorities, but found existing crypto-tax solutions were not great.

There are some very fully featured tax solutions out there. I believe there is even a YC company that can solve this problem. However, I found that for my use case, which includes less than 100 trades, the existing sites would charge me between $150 and $800 for a handful of PDFs. I wasn't sure that made sense given the server-side costs to generate these documents (approximately zero).

CBR does this for free. A large portion of the codebase is open source (https://github.com/robertkarl/yabc).

I would love your feedback about U/X as well as pricing for premium features.

I'm happy to answer any questions.