If you have a single member LLC, and do not choose to be taxed as an S-Corp, you will need to file Schedule C with your personal tax return. That will require TurboTax Self-Employed if you use the Online version, or Home and Business if you use the Desktop (CD/Download) version. If you file as an S-Corp, you will need to use TurboTax Business for the S-Corp, which is a separate Desktop software program. If you don't file Schedule C, you will need to use TurboTax Premier.