Yup, RMDs are why the traditional advice of burn through taxable accounts first, then traditional 401k/IRAs, then Roth isn't always best. Sometimes it's better to spend down the traditional accounts in your 60s or convert to Roth in your early retirement years so that you don't end up with RMDs much bigger than you need to fund your life, and the taxes that come with that.
Was just thinking about this. For me as it stands now, I'm gonna chew through most of my roth pre-65 to get obamacare subsidies. So come 65 and up until rmd time, I'm looking at mostly taxable income. This will certainly put me into the 22% bracket. I'll need to revisit what would be the rmd amount, but unless it puts me in the 24% bracket, I see no reason not just to wait until rmd time to do that conversion. You see a flaw in my thought process?
I don't believe you can use RMDs as the source for Roth conversions, if that's what you're asking. So you'd have to take out your RMD AND whatever you'd be converting, so that's definitely going to bump up your taxes.
The time to do conversions is when taxable income is lowest. Stuff the 12/22/24% bracket to the top, depending on where you are sitting. Ideally before you start taking SS.
Do you have already taxed/brokerage funds to use early on, at least in conjunction with Roth to keep you in the ACA sweet spot? I know a lot of people, and I'd still put myself in this category but I've been trying to address it, have most of their funds tied up in Trad/Roth accounts and not much in taxable.