I suspect that, for many people with significant assets, the amount of time necessary to optimize their withdrawal strategy in retirement (including maximizing tax efficiency in withdrawals and re-allocations) would be much more than an hour a year. Indeed, I suspect many people with significant assets and both taxable and non taxable accounts would get it wrong even if they were willing to spend dozens of hours. And that is without things like weighing the benefits of annuities (and comparing them), making rational estate planning and gifting decisions, optimizing tax efficiency in charitable contributions, being thoughtful about the merits of various asset allocations, avoiding emotional investment decisions, etc. And to do all of this as we age and potentially have diminished cognition can be even tougher. If I thought that I could get all this right, and do it in an hour a year, then for sure there would be no reason to pay anyone.