Can I call a US Treasury Bill a stock? I received a 1099-B from the brokerage I use.
No - t-bill is not a stock. It is a different type of asset. When you sell an asset, be it a stock, bond or t-bill you will receive a 1099-b for the sale showing the gain or loss depending on the difference between what you paid and what you sold it for. To report 1099-b's you need TT Premier program.