Historically I have always done my own taxes, but each year they are getting slightly more complex and require a more in depth interpretation of tax code aside from a TurboTax interview. The experience with Randy will ensure that I never do my own taxes again.
If you make an error on your tax return, you can fix the mistake by filing an amended tax return.
It is best to take care of this sort of thing quickly, because the IRS charges interest and penalties if you wind up owing them additional tax.