Can You Have A Roth 401K And A Traditional 401K? 
That is a terrific question ! Yes , you absolutely can , and should ! If you can afford to fund both accounts , by all means do so . The tax free growth advantage of the Roth , and the freedom to continue letting it grow when you turn 70 1/2 make it a perfect compliment to the taxed withdrawals of your 401k account . The balance of the two are a very good investment plan for your retirement . You should be aware that the IRS caps the amount of yearly contributions in your Roth at $ 5500 a year -LRB- $ 6500 if you are over 50 years old -RRB- . You can put $ 18,000 into your 401k , in 2015 , and an additional $ 6,000 if over the age of 50 . If you can afford to max these out , do it ! Especially the 401k if your company matches a percentage of the contributions that you are making . What a great question ! If you need more detail , please feel free to contact me , okay ? Thanks for asking ! 