Information For...

For you and your family
Standard mileage and other information

Forms and Instructions

Individual Tax Return
Instructions for Form 1040
Request for Taxpayer Identification Number (TIN) and Certification
Request for Transcript of Tax Return


Employee's Withholding Allowance Certificate
Employer's Quarterly Federal Tax Return
Employers engaged in a trade or business who pay compensation
Installment Agreement Request

Popular For Tax Pros

Amend/Fix Return
Apply for Power of Attorney
Apply for an ITIN
Rules Governing Practice before IRS

About Form W-9, Request for Taxpayer Identification Number and Certification

Use Form W-9 to provide your correct TIN to the person who is required to file an information return with the IRS to report, for example,

  • income paid to you 
  • real estate transactions 
  • mortgage interest you paid 
  • acquisition or abandonment of secured property 
  • cancellation of debt
  • contributions you made to an IRA

Current Products

Recent Developments

Public Law 115-97 changed the backup withholding rate from 28% to 24%.

Other Items You May Find Useful

All Form W-9 Revisions

About Publication 515, Withholding of Tax on Nonresident Aliens and Foreign Entities

About Publication 519, U.S. Tax Guide for Aliens

Publication 1281 (PDF) , Backup Withholding for Missing and Incorrect Name/TIN(S)

Publication 5027 (PDF), Identity Theft Information for Taxpayers

Other Current Products

Comment on Form W-9

Use the Comment on Tax Forms and Publications web form to provide feedback on the content of this product. Although we cannot respond individually to each comment, we do appreciate your feedback and will consider all comments submitted.

CAUTION: We cannot respond to tax-related questions submitted using this page. Instead, please see our Tax Law Questions page.