@ZeroBadCooks , Assuming that you are a US person and that your "foreign " business is not a dis-regarded entity , registered under foreign country's laws, pays you dividend etc. you should able to use TurboTax On-Line / download complete your US tax filing easily .
If however, your "foreign" business is sole ownership ownership and is not a corporation ( like an llc ) and whether does business domestically or otherwise , you still will have to file a Schedule-C. Therefore it would be unwise to use TurboTax and another person to d the return -- should be done as ONE return.
I hope I am understanding your situation correctly -- please correct me ( if need be ).
