Ok thanks everyone. I heard that the max exemptions you can claim is 10. My old W4 was based on me having 2 kids. I was thinking if I updated it to reflect the fact that I now I have 4 it would then be 11. Since I currently get a refund of around 3500 a year I am assuming that having new exemptions at 11 would increase my take home pay, but of course not have a refund at the end of the year.
