Solo401k with both Roth and PreTax funds - Possible? and How?

[David Chance]

* I hope this is not a double post, thought I had this posted but it isn't showing up.
Hi,

Just checking to see if anyone else has this situation and how they are handling it.

I have a solo401k setup with checkwriting with Fidelity and I have rolled over an old pre-tax 401k into it several months ago.

Recently I have changed jobs and now the 401k from this last company is now able to be rolled over to this solo401k. The catch is that in this old 401k it is a combined pretax and roth... roughly a 50%-50% split of each.

I've been told by Fidelity that I can rollover the whole thing into my non-prototype account (solo401k) which currently is only 100% pretax funds, however it would be up to me to keep detailed records on which percentage is roth and which is pre-tax.

Is anyone else having this issue and how is it being handled?  Don't wanna get into trouble down the road.

I considered opening a separate account for the 'Roth' only funds within the solo401k, and Fidelity said i couldn't do that. (if I understood correctly).

I've been reviewing my plan documents and I think it allows it, but it's hard for me to decipher the 'legalese'.

Let me know what you think.