Will IRS side with you over brokerage 1099-Div regarding date of ownership of assets if you have documentation of transfer notice different than reflected on 1099-Div?
I have a solo taxable brokerage account and recently created a new joint account with my parents with them as the first listed account holders. I signed a Letter of Authorization on 12/02/2017 to transfer multiple mutual funds in kind from the solo brokerage account into the joint account. At the same time, the forms creating the joint account were signed by my parents and I. The forms were received by my broker on 12/07/2017. It wasn't until 12/13/2017 did we receive official notice that the joint account had been established (in spite of the account showing up in our brokerage overview list). During the time period from 12/02/2017 to 12/13/2017, some of the funds that were transferred made capital gains redistributions. My brokerage is saying that the redistributions will be reflected on the solo account 1099-Div instead of the joint account 1099-Div. If that happens, is it OK if I do not include those redistributions in my filing if I note that they occurred after my letter of authorization for transfer and my parents report the redistributions on their tax return (as they are the primary account holders on the joint account)?