Get your taxes done using TurboTax

The "calculator" is not nearly as exact as the actual tax preparation program.  And, many forms are not finalized, so that may be affecting your calculations, too.  Why are you "about to file?"  The IRS will not be accepting returns until January 29.  See below.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**