<prompt> Human: Lets say I contribute a percentage of my income that would force me to hit the maximum by November. Would my company automatically stop taking money out of my paycheck when I hit the limit or would I have to manually reach out to my 401K provider at the end of the year and have them withdrawtax the excess and give it to me in a lump sum?Im trying to figure out if I should do the math and try to contribute a percentage to get me as close as possible to that max without going over.  <response>: Yeah, give your provider a call.Mine takes anything over and starts contributing to an after-tax 401k.EDIT: Another thing to check for is whether you are matched monthly with a max match. If you are, you want to do the math to spread out your contributions so you dont lose a month or two or whatever of matches. 