Request for W-9 Tax Form
Cup Source requires a completed IRS Form W-9 from all new vendors, contractors, and suppliers to comply with federal tax reporting regulations and process payments accurately.
Download the Official IRS W-9
Please use the current IRS Form W-9 (Rev. January 2018). Do not use third-party or outdated versions to avoid processing delays.
⬇ Download Official W-9 (PDF)How to Complete & Submit
Print or Open in PDF Reader
Print the form or fill it digitally using an Adobe Acrobat Reader that supports fillable PDF forms.
Complete All Required Fields
Provide your legal name, business structure, address, Taxpayer Identification Number (TIN/SSN), and sign/date Part II. Leave Part III blank unless specifically requested.
Verify Accuracy
Ensure your TIN matches your business name exactly as registered with the IRS. Inaccurate information may trigger backup withholding or payment delays.
Submit Using Your Preferred Method
Use one of the secure submission options below. We recommend email or our vendor portal for fastest processing.
Submission Methods
📧 Secure Email
Vendor Tax Forms
taxdocuments@cupsource.com
*Encrypt if sending sensitive TINs*
🌐 Vendor Portal
Recommended
Log in to your Cup Source vendor account and upload via the Documents tab.
📠 Fax
+1 (800) 555-0192
Attention: Accounts Payable
Please include cover sheet.
✉️ Postal Mail
Cup Source, Attn: Tax Compliance
1240 Commerce Blvd, Suite 300
Portland, OR 97209
🔒 Data Privacy & Compliance Notice
Cup Source is committed to protecting your tax information. All submitted W-9 forms are stored in encrypted, access-controlled systems compliant with IRS data security guidelines. Your TIN will only be used for tax reporting, payment processing, and regulatory compliance. We do not share your tax information with third parties.
Have Questions About the W-9 Process?
Our Accounts Payable team is available to assist with form completion, TIN verification, or vendor onboarding.