Supposedly, they only sell "anonymized" data.
But there's fast growing shadow industry of data "de-anonymizers".
Tax data is easily one of the most valuable data sets out there.
Ever wonder why there's an explosion of "free online tax" services ?
Must be data harvesting. . .
I'm politically active, so I always TRY to do my taxes in "tin-foil hat mode".
It's getting to be more and more insanely difficult.
I get the TurboTax disk, put it on a clean VM or hard drive, run the updates, and do all of the rest offline.
At the end, I create a PDF, put that on a USB stick -- then print and mail.
TurboTax continuous bugs you, trying to get you to connect to the internet.
Two years ago, TurboTax would not let a Mac "print to PDF" without connecting to to internet. (for PDF drivers ?)
That set off a bunch of alarms in the forums !
This year, on an old Windows laptop, I'm doing my taxes and -- I swear -- something keeps enabling WiFi that I deliberately left turned off !