Out-to-Lunch
Thinks s/he gets paid by the post
Now that I better understand your point, perhaps we actually are in agreement after all. I have never viewed the Trinity Study as setting forth a hard and fast spending rule every year. Rather, it is a guideline for how much one should accumulate in assets up-front to support a 30 year retirement. As you note, the balance in my tIRA is not all mine; some belongs to the tax man. In preparation for retirement, I tried to take that into account. In my view, there are two main ways to do so: 1) discount the starting balance in the tIRA by some marginal tax rate or 2) gross up annual spending for taxes.
But that merely helps me determine when I have enough in my war chest to pull the plug . Once said plug has been pulled and I am engaged in the hurly burly of actually going through retirement, I will of course try to maximize the net value of my assets after taxes. So if I can Roth convert now and pay 12% tax, it would be better to do that than take an RMD of the same amount in a few years and pay 22% tax. And that would be true even if doing so results in a withdrawal rate greater than 4% this year, because the tax arbitrage is increasing my net assets and should, therefore, be improving my position vis-a-vis the base case from the Trinity Study (assuming I used 22% as the base case tax rate in my planning).
Yup, yup, I agree. This is pretty much how I thought/think about it.
In practice, in my case, I accumulated assets until I could have a WR of ~3%, including taxes for any withdrawals from tax-deferred. Then, I separately make a determination on whether or not to make Roth conversions, and pretty much ignore what that does to my WR in the year of conversion.
Last edited by a moderator: