Domestic Vendors

• W-9 Form

  • Instructions W-9 -To be completed by the vendor when tax identification number issues occur.

• Form SS-8

  • Instructions SS-8 To be completed for determination of Independent Contractor Determination

Foreign Vendors

• Form 8233

  • Instructions for Form 8233 – Instructions for completing form 8233

• Form W-8BEN

• Form W-8BEN-E

• Form W-8CE

• Form W-8ECI

• Form W-8EXP

• Form W-8IMY

  • Instructions for W-8 -Instructions for completing forms W-9BEN, W-8BEN-E, W-8ECI, W-8EXP and W-8IMY

Tax Information

• Request for Tax Exempt Certificate

• Tax Exempt Notice

Office of Management and Budget

• • OMB Circular

Federal Acquisition Regulations

• FARS Listing