A W-4 form is a form that you complete for your employer. It tells your employer how much to deduct from your paycheck in taxes. The deducted amount is called withholding.
It is important to complete your W-4 form correctly, so that the correct amount of taxes is withheld. When you start a job, the W-4 will be one of the first forms you fill out. You may also update your W-4 if your financial situation changes in any year.
Submit the form to your employer. You may wish to keep a copy for your tax records. If you have questions about the form, ask your human resources office for help.
Take a look at the W-4 on the IRS website.