Removal of excess Roth after filing date
I missed including a $300 Traditional IRA on my 2020 tax return and I maxed out my Roth contribution to $6000 so this resulted in an excess contribution of $300 that has to be removed from my Roth for 2020. I had Vanguard return my $300 in excess 2020 Roth contributions after Oct 15, 2021. I know I owe the 6% penalty on the $300 returned to me. I will amend the 2020 tax return this Nov to correct the 8606 to show the $300 in traditional IRA contributions and file 5329. Since Vanguard left the gains in the Roth account (IAW Pub 590) how do I account for these gains? Do I show them as part of my 2021 Roth contributions? However, don't I owe tax on the gains to be considered part of my 2021 contribution? Since I am under 59 1/2 do I owe any 10% penalty?