Supplier Self Service

Tesoro is working on an initiative to implement a Supplier Self Service Portal.  This Web-based portal will offer our suppliers the opportunity to access their own purchase orders, invoice, and payment information through a secured login to the Portal.

Once the TSO Supplier Self Service Portal is developed, you will be able to register for access to the portal using this website.  We will update this website as soon as the Portal becomes available to our Suppliers, and will include instructions on how to register.