<prompt> Human: My job just gave a presentation on the types of 401k plans we can sign up for... but Im having trouble understanding why anyone would put up pre-tax money if their taxes and bracket are only set to get higher and higher as they gain more experience and climb up the technical expertise chain? Does it have something to do with getting more interest? Sorry if sounds stupid, but I didnt ask this question in front of everyone because I felt like the answer is obvious and Im just not getting it.  <response>: When you retire, your income will usually decrease thus your tax bracket now will be higher than what it will be in retirement 