<prompt> Human: I contributed the same amount to both my pre-tax 401k and my Roth 401k. Yet, no taxes were taken out of either. Is this correct? Is there something Im not understanding about Roth 401ks?  <response>: The money in your Roth 401k isnt taxed after it is placed in your account; instead the money is placed in your account after your taxes have already been taken into account. So, first you pay taxes on your income, then from whats left, your contribution is removed and put into your 401k. Put another way, if youre putting 1000 into your traditional and 1000 into your Roth 401k, youll see the same amount in both accounts, but one used pre-tax money and one used after-tax money. 