The IRS Form W-9 (Request for Taxpayer Identification Number and Certification) is used by individuals and businesses to provide their correct Taxpayer Identification Number (TIN) and Chapter 3 tax classification to a person or entity that is required to file an information return with the IRS.

For example, John Doe is a U.S. citizen and resident of Florida. John opens a savings account with Bank ABC. Bank ABC requests John to complete a Form W-9 to verify his name, address, and social security number (SSN). The bank uses the information to report the amount of interest income paid to John on Form 1099-INT (Interest Income). If the bank did not receive a correct Form W-9, it may subject John to backup withholding.

Information Required on Form W-9

The taxpayer must sign and date the certification in Part II. Failure to provide a completed and accurate Form W-9 may result in backup withholding on the taxpayer.

Video Tutorials Related to Form W-9

Please see our video examples below on how to complete Form W-9 for various scenarios:

Additional Information

Taxpayers looking for more information can view the IRS Form W-9 Instructions.