Is 401K Plan A Retirement Plan? 
A 401K Plan a Retirement Plan is an ERISA sanctioned qualified plan that allows pretax contributions into this employer sponsored retirement plan . For 2013 contributions you can contribute up to $ 17,500 and if youre over age 50 you can contribute up to $ 23,000 . Keep in mind that some employers match your contribution to some degree , so it may be something to consider . 