Have you had a problem with Turbo Tax not importing 1099 transaction items? I got a letter from the IRS saying that I owed a large suggested amount of back taxes for 2017. I checked their list of items and then looked at my 1099s and realized that not all of my transactions were imported to Turbo-tax from the brokerage sites. I guess I'll learn to compare the imports with the 1099 PDFs more closely and manually enter them if this happens again. For the 2 largest items there was a cost basis but that was not show on the 1099 and I needed to have manually entered it as well as the transaction. I did find an old statement were the cost basis was shown and I sent it along with an explanation letter to the IRS and this reduced the amount own considerably. I did a calculation on what I thought that I still owed and sent them a check. I'm still waiting to see if I hear back. This was a big shock for me. I've been using Turbo-tax for at least 10 years and never had this happen before.