fanfare and Joe-T,
Here is what TurboTax says about this:
TurboTax, Learn More, next to “I’ll enter a summary for each sales category"
If you have sales identified on your statement as Box A or Box D sales, and they don't include any adjustments to the gain/loss (e.g. a Disallowed Wash Sale amount), then you should simply enter a summary for these sales. You'll only need to enter the total sales proceeds, total cost basis, and sales category.
For sales that aren't identified as Box A or Box D sales, or that require adjustments, you have a choice to make. If you choose to enter summary totals for these sales, then you'll be required to mail in a statement with specific information about each individual sale. Otherwise, you can just enter each sale one at a time in TurboTax, and you won't have to mail anything in.
Here's a tip that might help: you can report individual sales as well as summaries for the same account. So let's say you have an actively traded account with 500 stock sales that are all Box A or Box D sales. Only 3 of the sales require any adjustments. In this case, you can report the 3 sales that require adjustments individually. Then you can report all the remaining sales by entering two sales summaries, one for all the Box A sales that don't require adjustments and one for all the Box D sales that don't require adjustments. By entering just 5 sales, you've covered all 500 sales and don't need to mail in any additional info.
