Vendors
Did you receive a letter regarding a W-9 request from OSU?
Please access the Vendor Portal to complete the vendor update process.
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Have a question about a 1099?
Procurement and Contract Services
Procurement and Contract Services is OSU's central purchasing office. If your question is not specifically about a 1099 you’ve been issued or about an invoice you’ve submitted, the above link will direct you to their page for most other information
Have a question about payment of an invoice?
Invoices are processes by individual business centers. Click the link below to see the departments associated with each Business Center and then click on the appropriate Business Center to go to their site and list of contacts.

