If our current plan continues, and I take SS at 70 (and no cuts), DW and I will receive ~$143k in pension and SS benefits combined. A RMD taken at 72 of a $2.5mil retirement plan is ~$94k. So $237k, puts us squarely in the current 24% bracket. But if I go room temperature in thereabouts, she would be clearly in the 32% as a single tax payer. If rates change in '27, which I doubt, but I gotta plan, puts it at 35%. plus IRMAA and possible NIIT. I know, a nice problem to have.
You raise a good point that's gotten lost in the ongoing debate. Sounds similar to our situation: at point I reach RMD age, SS+pension benefits would be +$100K, RMD on $4M tIRA [projected], which would have gone untouched assuming no Roth Conversions, would be ~$160K and climbing rapidly, putting us at +$260K combined and that's not even counting other pot'l income sources, putting us in the 24% bracket as a couple, 35% as a widow(er).
That being the case, I've tried modeling converting about $400K into Roth over the next several years, which would get my tIRA down to $3M in the comparable timeframe (I'm using bogglehead's RPM model which is quite robust tool for this analysis). I can get the RMD down to $120K (vs $160K), so [if I meet an untimely demise] adjusting SS and my pension goes away, her total income would be ~$200K (vs $260K). So, that could put her at 32% bracket.
So, wondering if I'm buried and DW inherits my tIRA, are the RMD's calc'd differently for her? [seems its calc'd on her life expectancy]
Hard to know if conversions will be worth it (given so many potential variables). I go back to, if its not gonna be a big hassle, then I like hedging my bets a bit and expanding that pot of "tax-free" [i.e. tax prepaid] funds even if the final dollar benefit might be negligible.
As for the past decision to load up the 401k/tIRA's, that was a no-brainer - have been fortunate to reside in or near the top bracket for past 20 years, so already [likely] "won" the tax arbitrage game in that regard. This conversion stuff seems like it's all about collecting those last few bonus points.