rocketdog wrote:
I have the same problem: a 401K, a Rollover IRA, and a Roth IRA. My wife has the same 3 accounts as well. I originally tried tracking all 6 in a spreadsheet as a single master account so that I knew the overall proportions, but the rebalancing challenges proved too much for me so I resigned myself to treat each of the 6 accounts as if it were its own independent portfolio (which they technically are).
Still not perfect (especially since I can't invest in gold in the 401Ks), but it's much easier to see when things need rebalancing.
I don't think there is a perfect solution in all cases. But for most people, most of the time, they can usually jigger things around to keep it all fairly (but maybe not perfectly) balanced across all accounts. A spreadsheet works, although I have used Quicken for many years.
In my experience, I never had to do literal mini-PPs for every account and found that if I kept at least two asset classes in each account (so that the collapse of one class didn't result in the near complete loss of that particular tax-deferred "space") it usually worked out okay. That is actually a little easier to do now than it used to be since the development of the precious metals and bond ETFs in the early 2000's.
Over time, like many people I found my 401K (TSP, in my case) account becoming the "gorrilla at the banquet" and that required some creative use of zero coupon bonds and PRPFX inside and outside of IRAs at times and having to occaisonally sell some EE and I bonds I would have otherwise liked to retain. IMO, most investors just starting out should put some thought and planning into how they will eventually deal with the "oversized" 401k problem. Otherwise they may feel tempted to frequently shift accounts around between their PPs and VPs. I think I could have done a better planning job on that score if I had recognized the predictable likelihood of a growing 401K. Even if you never perfectly solve the problem, the PP strategy will probably put you ahead of most investors.