OK ... first if the S-corp is not on extension (due 9/16) then the corp return is very late and the penalties/interest is piling up. And if this is your first time filing an 1120-S then local professional help is highly recommended to get educated on what is expected and required.
Next ... if you will attempt this yourself you need 2 tax programs ... one for the corp and one for the personal return .... and the corp return MUST be completed FIRST.
To prepare a corporate, trust or partnership return you would need Turbotax Business. This is a separate program from Turbotax Home and Business. TT Business is a program only available for desktop windows use (there is no on-line or Mac version.)
http://turbotax.intuit.com/small-business-taxes/
https://turbotax.intuit.com/small-business-taxes/forms-business.jsp
https://ttlc.intuit.com/questions/1917225-is-turbotax-business-right-for-me
To prepare a personal return, depending on the complexity, you will need a version that prepares Forms 1040 such as Deluxe, Premier, Home and Business, etc. If you have a Schedule K-1 from either a Form 1120-S, Form 1065 or Form 1041 you will need either the Premier version or (if you also have an unincorporated business) the Self Employed version when using the online program.
All the 2018 downloaded programs will handle the personal return.
View this product guide chart to see which product is best for you:
https://turbotax.intuit.com/personal-taxes/cd-download/
