There are many seldom used calculations that are not supported by TurboTax.
For a list see:
https://digitalasset.intuit.com/DOCUMENT/A6QrdFCgW/010421-2020-unsupported-calcs-L1FQfTTgn.pdf
WHY??? $$$$ It costs money to support all of these in the step-by-step mode which would raise the price of TurboTax for everyone when 98% of users do not need it.
**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.**
