@carface there are some data tools that pull transaction data (although I am personally not sure/ not able to verify how accurate the information is). You might find them through the tax/taxes tags.

Also, I released an open source e-book that includes a section dedicated to Steemit taxation with a basic couple of examples (I repeat basic!). I say "open source" because I engage in discussion in the comments and over time have added additional explanations based on the user feedback. It's a continuously growing/updating book and others are welcome to contribute. This is not an official "project" with outside funding.