TurboTax calculations are guaranteed and errors are very rare. Incorrect calculations based on data that you entered are not guarenteed - TT can only calculate using the data that you provide.
When the IRS says "calculation error" it usually means that they changed something else, such as adding income you failed to report, and then the calculations will calculate differently. True "calculation errors" are math errors and not likely to happen.
The letter you received from the IRS should tell you what the IRS changed or disallowed. What dies it say?
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
