The W-4 form is officially called the Employee’s Withholding Certificate, and it’s what you give your employer so they know how much federal income tax to take out of each paycheck.

Fill out and submit Social Security Form SS-5 if you're updating or replacing your Social Security card, or if you’re requesting one for the first time.

The W-4 is the form you fill out when starting a new job to determine how much federal income tax is withheld from your paycheck. While the default W-4 settings will work for many people, you may ...