For the year 2018, I made two $5500 contributions to my traditional IRA, both before March 2018. First one for 2018 and second one for 2017. I did not make any such contribution for 2017, so there no excess.
Then I converted over both $5500 amounts to my Roth IRA, essentially doing the backdoor Roth.
So my 1099-R has $11000 as both Gross Distribution and Taxable Amount.
I followed this article
But in the end it says I have a penalty of $330, so 6% of $5500. No increase in taxes, so that's good.
Out of that 11000, I think there has to be a way to tell all of that was not for 2018, but was for 2017 and 2018.
How do I solve this problem?