do I have to have 2 separate TurboTax accounts, one for my personal tax filing and a separate one for my LLC partnership

If the LLC is a multi-member LLC, then this would be 2 separate accounts yes, if you are using the online version.

if it is a single member LLC, and you did not elect to be treated as an S Corp, then no, you would only need one account as the LLC income and expenses would be reported on Schedule C which is part of your personal return.

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