I really need to talk to a professional, but... I'm putting in post-tax money into my 401k, and if I roll that over into a Roth 401k, I only pay taxes on the growth on the rollover event? So, if I rollover immediately, there won't be much (if any) to tax, correct? #401k
Correct. Most brokers allow you to setup automatic rollover from after tax 401k too Roth 401k. That will ensure you don't have any gain.
Correct