I used an accountant to do my taxes the last two years. Prior to that I used TaxCut and mailed my returns in. This year I am going back to TaxCut, but may efile.
I have 6 investment accounts, each of which has dozens of transactions. On schedule D I listed each account twice; once for long term and once for short term gains, and then attached copied of my account statements to support the schedule D entries.
The accountant filled out the schedule D the same as I did, but didn't send any supporting documents in with the efiled return. He said that it was adequate to have them available if the IRS did and audit. The IRS hasn't complained yet, so I guess that is acceptable, but want to make sure. It is one thing to have my accountant do it wrong, but quite another to do it wrong myself.
Hopefully I have explained the process adequately; is it the right way to do it?