I am recently divorced and will be filing head of household, as I have an 18 year old who still is my dependent. At first on my w-4 I selected the $500 exemption, but noticed there were paychecks that werent having any FIT withheld, so I removed it. I ahve a little more FIT being withheld, but I do not feel it is enough and do not want to have a large payment due next time I file. How can I make sure that enough FIT is coming out of my paychecks each month?
