Does your software allow me to file form 1120s?

The TurboTax personal editions doe not support a C Corp tax return Form 1120 or an S Corp Form 1120S.

You would need to purchase the TurboTax Business Edition.  The Business Edition can only be installed on a Windows based personal computer, not on a Mac or online.  The Business Edition cannot complete a personal tax return, Form 1040.

TurboTax Business Edition - https://turbotax.intuit.com/small-business-taxes/

Yes.  TT has software that will allow you to complete the 1120S and applicable K-1's.  

The link to this software is below.  This is a separate program just for business returns and is a Windows only product.

https://turbotax.intuit.com/small-business-taxes/

Looks like @DoninGA and I were addressing this at the exact time and good news, we both reached the exact conclusion.  Nothing gray about this matter !!