Anyone who doesn't use a software tax program these days is only asking for problems. Put the correct information in, and you won't overpay or underpay. I've used tax programs since they first appeared, and I have never been audited. Even after I spoke against the Clintons!
I do mine entirely by hand, and I've never been audited.
There is no such thing as a perfect tax return, so no software package can prepare such.
The tax laws are not black and white if you have any sort of complexity to your investments.
Every year Money magazine has 50 tax preparers work on the indentical information and gets back 50 different answers. And most of those tax preparers use software much more expensive than TurboTax, TaxCut, etc.
that's ok...you are still on the list....you got next