I started building my own open source US tax engine, but then found https://github.com/ustaxes/UsTaxes here on HN (https://news.ycombinator.com/item?id=26138446) and decided to throw my efforts with them instead. Check it out!

Is this related to Jaron Lanier's vision of union (in the labor sense) groups which sell to companies access to the group's anonymized data? In his model, one individual can belong to many groups and their information is like a share/stock they have in a pool of data with other people. They sell in a cooperative fashion to select companies, gaining power through anonymity and group bargaining power.