I generally agree that many get little benefit. roth conversions
But I expect many can get benefit from roth conversions.
Take a couple that did that did roth conversions and the the first spouse dies with no effect on income. Taxes go up due to single filer.
The conversion itself may not may not be the whole picture.
@bingybear I see the mechanics of how it would work.
Spouse 1 dies.
Spouse 2 loses MFJ status and now claims single. Effective tax rate goes up.
Case a: with Roth conversions, and a fully depleted tIRA, single spouse has no taxable income from the portfolio. footnote: SS and other income (e.g. pension) need to be treated, see below.
Case b: without Roth conversions, with without sufficient after tax cash, tIRA withdrawals are needed and are taxed at the higher single filer rate. And RMDs are in play for this case.
But this all needs to get pencilled out in a model. How many of you are doing this? The world does indeed include Social Security, pensions for some, and other sources of income and net worth.
@bingybear do you have a thorough and detailed model that shows you the effect of Roth conversions, Social Security and your other financial moving pieces?
I have such a model for myself. It's not 100% perfect and I add detail and fidelity as I go. I trust it for the big picture, and for many of the fine details. Roth conversions don't interest me based on the model.
There are so many claimed reasons for doing Roth conversions, yet when a detailed model is built, none of the reasons hold water for me. At least in my case. However my case is not unique. The one case I haven't fully sorted is the impact to heirs when the estate is passed on. I may not care about this because it's too far into the future to worry about.