Accounts Payable Department
Resources and contact information for vendors and contractors
Download Vendor/Payment Setup Forms
All new vendor/contractors are required to complete and return these forms.
Contract or P.O. required for all purchases
All purchases of goods and services by TriMet must be authorized in advance with a contract or Purchase Order number.
If your company accepts an order for goods or services without a contract or Purchase Order number, you may not receive payment from TriMet. TriMet employees are not authorized to use their employee number as a Purchase Order number.
Sending invoices to TriMet
All invoices must include the TriMet contract or Purchase Order number in order to be processed.
To avoid delays, please send all invoices directly to TriMet Accounts Payable at the address below.
How to contact Accounts Payable
Vendor Name A–F
Vendor Name G–O
Vendor Name P–Z
TriMet Accounts Payable, FN4
1800 SW 1st Ave., Suite 300
Portland, OR 97201
8 a.m.–5 p.m. weekdays