Total number of allowances you are claiming? help? I have two kids and one on the way my fiancee doesn't work?

The bookkeeper or office manager at work will ask you to fill out a W-4 form which reflects how many dependents you have and your marital status. You are married and have three children. I suggest you file like that. You will not owe any taxes for 2012 and will receive a nice refund in 2013 that will come in handy. It's better to receive a nice refund the following year then to receive an extra $25 in the bi-weekly paycheck.