<prompt> Human: I think the max contribution for a Roth 401k is 18,000 a year. With my contribution and company match, Im on track to do a little over that. Will the 401k company stop me from contributing too much? Or, if not, what will happen if I dont make an adjustment? Thanks!  <response>: Your companys payroll should have limits in place to stop your contributions once you hit 18K. 