I completely agree: Turbotax should run natively under Linux. I have been buying Turbotax for many years, and it seems to have few changes in the software "engine" and GUI from year-to-year. Sure, they need to update and verify each year for tax law changes, but why can't Intuit spend some of that money on a Linux port? I have paid a lot of money over the years for Turbotax, a program I used ONE time per year.
