Welcome Tesoro Suppliers

Tesoro’s Procure to Pay Process (P2P) streamlines procurement processes and procedures, improving overall efficiency and relationships with our suppliers. We are always searching for ways to ensure accurate, on-time payments, and to respond promptly to any questions you may have about our processes.

This site provides the information needed to conduct business with Tesoro, including:

• Payment Methods
• Invoicing Methods
• Supplier Information Forms
• Frequently Asked Questions
• Contact Information

Planned future enhancements include Electronic Data Interchange (EDI) capability and a Supplier Self Service Portal.