@lwagner23, since you have three small children under 17 years of age, you are entitled to the Child Tax Credit for each. This amounts to about $6000. The tax credit decreases the amount of your tax liability. This may be why you do not have any federal tax deducted.
This TurboTax Calculator is helpful to verify whether the amounts being deducted or not deducted are reasonable:
https://turbotax.intuit.com/tax-tools/calculators/w4/
Do you receive any other income besides from your job?
