The TurboTax (TT) accuracy guarantee process is explained here
https://ttlc.intuit.com/questions/1901269-how-do-i-submit-a-claim-under-the-turbotax-100-accurate-ca....
but it only covers actual CALCULATION errors in the program, not user error
(and it’s almost always user error), and it only pays any penalties or interest
resulting from that error, not the taxes. Either way, you are still responsible
for the increase in tax.
