Commonwealth Of Massachusetts Office Of The Comptroller

Buyer requires vendors to complete a Substitute Form W-9 for tax reporting purposes and Electronic Funds Transfer Authorization for payment processing. The form collects taxpayer identification information, business classification, and banking details. Buyer uses this information to comply with IRS requirements and facilitate electronic payments to vendors. The process includes verification steps to ensure security and prevent identity theft.

• 6/4/2025 - Proposal Due Date

• Must have valid Tax Identification Number
• Must have bank account for electronic funds transfer
• Account must be under direct control and access

• Complete taxpayer identification information
• Provide business classification details
• Certify tax exemption status if applicable
• Submit FATCA reporting exemption codes if relevant
• Verify U.S. person status
• Sign certification under penalties of perjury
• Include voided check or bank letter
• Provide routing and account numbers
• Designate account type (checking or savings)
• Verify account is under direct control
• Affirm IAT rules for international transactions
• Designate contact person for questions
• Mail original signed form to department
• Comply with 5-day pre-certification period
• Update information if account details change
• Verify identity to prevent theft
• Protect tax records securely
• Submit authorization for EFT enrollment
• Provide DBA name if applicable
• Complete all required fields on form