The best way to file your tax return will be by mail. TurboTax does not support Form 5471 or Schedule O. These two forms are attached to your tax return when you file your return.
You may use TurboTax Home & Biz to complete your tax return print out your return attach Form 5471 and Schedule O and mail your returns,
When a U.S. person (USP) is required to file a Form 5471 (an information return) under IRC 6046(a), it is filed by attaching it to an individual income tax return.
The links below are to Form 5417 & Schedule O
https://www.irs.gov/pub/irs-pdf/f990so.pdf
https://www.irs.gov/pub/irs-pdf/f5471.pdf
