Form 8846 is not included in any individual version of TurboTax.
See https://ttlc.intuit.com/community/forms/help/which-irs-forms-are-not-included-in-turbotax/00/25551
Form 8846 is, however, supported by TurboTax Business, which makes perfect sense as the thinking here would be that the vast majority of businesses that need to file the form operate under a structure other than a sole proprietorship.
