The TurboTax forms availability page is showing that e-file is not supported for Form 3115.
See https://care-cdn.prodsupportsite.a.intuit.com/forms-availability/turbotax_fed_windows_individual.htm...
I am not sure whether that really has a huge impact since an explanatory statement (showing the calculation) is required to be included with Form 3115 and that statement cannot be e-filed, regardless.
