I have some dumb questions since I'm 37 and WAY far away from retirement. To make a long story short, if I were to rollover my old 401(k) (left that job in late 2010) to an IRA, is doing it to a traditional IRA the correct one to choose? I guess I could choose a rollover IRA (if provided as a choice at the target), but there wouldn't be any difference other than the those funds can be rolled back into a future 401(k), if desired, right? (I don't see any really good reason to.) All the contributions into it were employee (me) pre-tax or employer match. Unfortunately, I called Fidelity about my old 401(k) and there's no way to move over just a part of it (like the cash). They have to liquidate in the ENTIRE 401(k), even if it's going into a Fidelity IRA (I'm moving it to another brokerage). Should I care about the cost basis of the positions in my 401(k) from a tax point of view or does it not matter? (One might care from a performance point of view.) From what I've heard, when one reaches retirement and takes 401(k) distributions, the distributions you take are taxed as ordinary income, as if the cost basis was $0 anyway. Is this correct? Would this still be the case if I rolled it over to a traditional IRA? If you guys can point me to some reputable sources (even better if they have examples) to backup your answers, that'd be great!