Aiwyn Tax
Federal and state tax estimates and a 1040, from tax documents.
Install
It is public, so there is nothing to sign in to.
Aiwyn Tax, in a GBrain workspace
Federal and state tax estimates and a 1040, from tax documents.
gbrain.io
Federal and state tax estimates and a 1040, from tax documents.
Aiwyn Tax, formerly Column Tax, is the tax engine of Aiwyn, a platform for accounting firms, and has filed over a million returns. Connected to a workspace, GBrain can read W-2s and other tax documents and answer “roughly what will I owe in federal and state tax this year?”, then hand back a 1040 PDF.
It needs no sign-in, and nothing is filed.
GBrain gives Aiwyn Tax a command line too. From a terminal, a
script or Claude Code,
gbrainio tool help aiwyn-tax
lists its commands once it is connected.
It is public, so there is nothing to sign in to. Then add it to a workspace, and anyone on the team can ask about it in plain words.