Tennessee has NO regular income tax on earned income.  We have the Hall Income Tax (this is the last year,,the legislature  has done away with it.)  Commercial paper interest and other non-bank interests are one of the things taxed, Bank Interest, municipal bond interest, etc are not taxable.  Passthru earnings from mutual funds (dividends, cap gains, non-dividend distributions) are a component of 'taxable' items.

W2 earnings, capital gains, rent incomes, schedule C earnings, etc.... are not taxable items.

Even single-member LLCs are not taxed on earnings....not sure where you are saying it 'all shows up' on the Tennessee return?

You talking about indivudual income tax, or Tennessee Franchise & Excise Tax?/