<prompt> Human: Is it possible for me to adjust my W4 to claim less than 0 exemptions for the remainder of the year? I was originally planning on contributing to a Traditional IRA this year, but I have since decided to keep that money for a down payment on a house.I have been claiming 4 since the start of the year as I wanted to get as close to 0 owedreturned as possible. Therefore, if I am only able to claim 0 and not a negative number Ill end up owing money at the end of the year.  <response>: You cant claim less than 0, but you cant ask them to withhold an additional amount at most companies. Meaning like tell them to withhold 200 extra per check. Ask your Payroll dept. 