IRS W-9 #
Paper: Letter (8.5in x 11in)
- Return to the requester. Do not send to the IRS.
- You may develop and use your own Form W-9 if its content is similar to the official IRS Form W-9 and it satisfies certain certification requirements.
- See certification requirements here.
This form is used to request taxpayer identification number of an employee and to request certain certifications and claims for exemption.
Internal Revenue Service
Business Tax Questions: (800) 829-4933
EFTPS Customer Service: (800) 555-4477