Hello - I have a 2020 1099-B from a brokerage account that has almost 100 sales transaction lines. They are either short term gain/loss showing basis reported to IRS (form 8949 Part I, box A), or long term gain/loss showing basis reported to IRS (form 8949, Part II, box D). There is no adjustment/entry on column 1f and 1g on the 1099-B for each transaction line, and I don't plan to make any adjustments. TurboTax indicates that if there are no adjustments/entries to the transactions, I can group all the short term gains/losses lines together into one total and enter it on Schedule D, Part I, line 1a; and group all the long term gains/losses together into one total and enter it on Part II, line 8a. TurboTax also indicates that I don't have to prepare the Form 8949 at all (neither enter the transactions as one aggregate for short term with box A check, and one aggregate for long term with box D checked; nor enter each short term and long term transaction). Is it correct that I can just prepare Schedule D and don't need to prepare Form 8949, since I don't have any adjustments on column 1f and 1g on the 1099-B, or in column f and g on the Form 8949?
Also when I selected the option to enter the totals directly to Schedule D, TurboTax shows a summary of these two lines and says "with attachment" next to the lines. I thought the instructions that I read said I only need to file Schedule D, and I don't need to attach a copy of the 1099-B (to show all the transactions), and I also don't need to prepare Form 8949. Please advise what I should include.
