<prompt> Human: The amount of money going into my ROTH 401k employer plan matches the percentage that I am contributing in pre tax dollars, which confuses me.Basically this is the first year Ive had a real job and Im contributing 11 of my salary to my ROTH 401k, what I see on my check from my employer is that theyre taking out 201 from the biweekly check for the ROTH 401k, which is 7, 4 employer match, that is 7 of my pre taxed dollars. I assumed that when Vanguard gave me a statement they would show I contributed something like 23rds of that since thats roughly what my effective tax ends up being. But instead of seeing 130 from me and 75 from my employer, Im seeing 201 from me and 115 from my employer.So when do I actually get taxed for this? I assumed I would see the 11 deduction on my paycheck, and then 23rds that amount in vanguard. Do I pay taxes at the end of the year for the account or something?Its definitely a ROTH 401k. So Im confused.EDIT:Thanks for all the replies. I think I can summarize whats happening now.I assumed the 7 that I was contributing would be 7 of my taxed income, so if my gross income is 2885, and my income after tax is 2070, I thought it would contribute 7 of the 2070, or 7 of the 2885 with tax removed. Instead whats happening is its contributing 7 of the gross income in post tax dollars, so the result is 10 of my gross income is taken from my paycheck, 7 goes to my Roth, and 3 is taxed. Result is 7 of my gross income is going to the Roth.If this is how it is then why wouldnt everyone use Roth to maximize contributions? If youre maxing your accounts for the year at 18500, then the traditional 401k youre contributing 18.5k and getting taxed at the end of it, with Roth youre contributing more than 18,5k, and then getting taxed and resulting in 18.5k in the roth which is then left to grow without being taxed, the result is more money at the end every time, you can basically take a larger advantage of the tax breakThanks  <response>: 201 is 7 of your salary. 115 is the 4 match. You are not contributing 11, youre contributing 7 and getting a 4 match. The 7 is a Roth contribution so it does not reduce your taxable salary. The 4 Traditional match, if listed on your paystub, is for reporting purposes only; its not included in or deducted from your check. The tax withholding on your check are based on an amount that includes your Roth contribution. Thats how its getting taxed. 