<prompt> Human: I havent been contributing to my 401k this year. I am just getting interested in PF and will begin contributing 15 starting New Years. But I just found out I will be receiving an unexpected 15k bonus this week. Can I just dump all that into my 401k for 2016 since its below the 18k limit? Thanks.  <response>: Its legal, but up to your employer to get it done 401k has to be payroll deduction. Talk to them quick! 