Can you give further information on how to actually do this in turbotax, ie enter both long term and short term gain? My 1099b from brokerage reported the entire amount as a long term gain. Using the example below, the 1099b would show 110 proceeds and no cost basis reported. I'm confused as to how to enter this since I want the proceeds to be 100 not 110. I assume that I would make an entry for the 1099B for the long term portion but don't know how to adjust the proceeds as I only see options for adjusting the basis. I'm also confused about which codes to use. It's not incorrect basis since no basis is recorded. Then for the short term sale (110-100), where would I report that? Do I enter and say no 1099B provided? Or do I do this manually sonehow in 8949? As for the explanation, do I have to submit my return by mail instead of electronically to include an explanation? Please provide further detailed instructions.
