I'm evaluating rolling over my old 401(k) into a self-administered IRA. I know the general costs and benefits (mostly benefits, in terms of increased flexibility, as stated here), but I'd like to see if I can precisely quantify the difference.
In particular, I'm curious as to the difference in administration fees for positions held at the same broker/account manager (Vanguard, Fidelity, etc). I've heard that 401(k)'s are much more expensive, i.e. double or triple the cost of IRAs held at the same funds. In other words, even at the same provider it makes sense to roll over your 401(k)'s into an IRA.
To take a concrete example, I can easily find the admin cost of the Vanguard 500 Index Fund Investor Shares (VFINX): it's a super-low 0.18% a year (see here). Can someone tell me what I'd be paying if I was invested in that fund as part of a 401(k) plan?
Even if you don't have links with Vanguard-specific information, it probably helps if you post links for other companies, since other readers are likely invested with those.