If using Online TurboTax and you need to report sales of investments (capital gains/losses from stocks, bonds, mutual funds, etc.), you'll need to use Premium.
If using desktop software, all of the desktop products can handle all the forms including stocks and other investment sales, etc. They vary mainly in the degree of help provided. The folks at TurboTax recommend Premier for investments for the increased help, but all the editions can handle it.
NOTE: The desktop Basic Edition does NOT come with a state program. Also be aware that if you choose desktop Deluxe, it comes in 2 versions--one that is a Federal and State combo, and one that is Federal-only. If purchased directly from TurboTax desktop Deluxe is the combo version that includes a state program download. If purchased from some other authorized retailer (Sams, Costco, Amazon, etc.), you have to be careful which Deluxe you buy if you need a state program.
