@construction-ca- let's break this down
this is a 'do it yourself' program
1) you take responsibility for entering everything correctly
2) Turbo Tax takes responsiblity for crunching the number (add, subtract, multiply and divide) again the US tax laws.
if either of those bullet points is done wrong, the tax return is going to be wrong.
The Turbo Tax guarentee only covers situations in #2 and only covers penalties and interest charged by the IRS. You are still responsible for the tax itself.
So what was the mistake? Typically it is #1 - because if it was #2, then millions and millions of tax returns would be wrong.
