A W-4 is the form you give to your employer to tell the employer how much tax to withhold from your paychecks. It only goes to the employer--it does not go to the IRS. If you need to change the amount of tax you are having withheld then you ask the employer to let you fill out a different W-4.
Does that help---or are you really asking about something else?
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
