Michigan Roth Backdoor Conversion

[S8NpTl]

I was a partial resident (10 months) of Michigan before I moved to another state.

I did a backdoor Roth conversion this year from Nondeductible Trad IRA to Roth IRA. My whole 2022 contribution was nondeductible, and I had $0 in my Trad IRA prior to 2022.  However in between the conversion I received $2 in interest in my Trad IRA so I have reported this in my federal return, as I understand I'll be taxed on this amount. I did the conversion while residing in Michigan.

Now I'm doing my MI return and I was prompted with this:

My question:

Is the rule for Backdoor conversion the same for MI as for Federal? In other words should I put $2 in the Michigan amount same as the Federal amount, if assuming for simplicity I had lived in MI for the whole year? 

Then taking in I lived in Michigan for 10 months, should I pro-rate the $2 by: $2 * 10 / 12? I converted the entire $6000 on 08/31, but the $2 interest only showed up a few days later, so I converted that too on 09/06. For the "Date of Conversion (Type C only)" should I used the latest date? Both of these dates are when I resided in Michigan.

Thank you in advance!

[ErnieS0 · Accepted solution]

Enter the $2 as Michigan income since you received the interest as part of a backdoor conversion you made as a Michigan resident.