The main reason I want to do my taxes online is to be able to efile. I expect that when my tax return is completely filled out and an online tax service like TurboTax tells me that I'm done, that I'll be able to efile. TurboTax online supposedly does a check of the tax return info and then allows you to move forward to charge your credit card and efile. But it charges your card AND THEN does one final check. In my case that final check turned up a specific date in my return, the sale date for a donated car, that does not allow me to efile. I have to print out my forms and mail them in this situation. If that's the case then I need to know that BEFORE my credit card is charged, not after. Then I can decide to abort the whole thing since I know that I cannot efile. As it is now I've had to call support once, get disconnected, call support again to explain, then be told that I need to wait a day before I have to call a third time to get my charges reversed.