Originally Posted by
crewdawg
As always, I'm not a tax guy and it's always good to chat with one. However, I have done the exact same thing you did.
401k is limited to $18.5. You can continue to contribute to 401a up to $55k (401k + Company contributions + 401a). If you're interested in what he's talking about, google "Mega back-door Roth IRA." This is not to be confused (though often is) with the regular back-door Roth IRA.