<prompt> Human: This is my 1st year contributing to my 401K and my company offers a great 401K match, 40 up to IRS maximum. I thought the maximum was 18,000? I talked with the 401K plan administrator as well as the our companys plan advisors. They both said once I hit the 18K cap, the contribution would stop on my end as well as the matching end but it shows the over-contribution. Why is this happening? Should I scale my contribution to 0 for now or just let it be? I dont want to later file my taxes and later have the IRS comes back to me and tell me I owe them money or anything  <response>: 40 up to max! Good heavens, thats great! 