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Doing Business with AC Transit

Doing Business with AC Transit

Doing Business

Procurement and Materials Department

We are a centralized department of more than fifty staff within the AC Transit District who are responsible for purchasing:

  • Necessary professional services
  • Equipment
  • Buses
  • Bus parts
  • Commodities
  • Architect and engineering services
  • Construction, and maintenance needs

We support the District departments in carrying out their strategic plans and overall mission of connecting our communities with safe, reliable and sustainable service.

We provide internal customers and vendors with procurement, contracting and inventory management services. Professional staff develop and issue solicitations for commodities, goods, inventory items, services and public works (construction) projects.

The Procurement and Materials staff work within a highly regulated environment. Policies and procedures comply with the California Public Contract Code and Federal Transit Administration.

The District's Procurement staff make every effort to obtain the maximum value for each dollar expended, considering the factors of price, quality, applicability, availability, support service, delivery schedule, and pertinent laws and regulations. The Procurement staff also ensure that performance satisfaction is obtained by working closely with AC Transit project managers to develop specifications that are detailed and clearly written



AC Transit is committed to timely payments to our vendors.  

To ensure efficient processing and timely payment of invoices, AC Transit request that all Vendors submit invoices directly to AC Transit’s Accounts Payable Department. Please submit invoices directly to the Accounts Payable Department using one of the following methods: 

Preferred method: Email a .PDF version of your invoice to:  
Accounts Payable Department 
Re: Invoice Submission 
PO Box 28507 
Oakland, CA 94604 

To avoid delays in processing of supplier invoice, please refer to these requirements: 

  • Register online in our Supplier Portal to obtain a 5-digit Vendor Number. Registration link can be found at: AC Transit | About Us | Doing Business with AC Transit | Procurement Opportunities | Supplier Portal | User Registration. The Vendor Number must be contained in all invoices submitted to AC Transit.  
  • Notify AC Transit in case of name | address | ownership | tax ID change with an updated W9 form at: 
  • If you are an existing supplier and do not know your Vendor Number, please send an email to: to obtain your Vendor Number.  
  • Vendors are required to have a Purchase Order number before shipment of goods and services, and submission of invoice.  
  • Vendors must include the following information on first page of invoice: 
    • Vendor Number & Name (must match with W-9 form) (sample
    • Purchase Order Number (sample
    • Purchase Order Line Number billed in this invoice (sample)  Contract Number or Agreement Number, if any 
    • Invoice Number 
    • Invoice Date 
    • Remit Address 
    • Proof of Delivery 
    • Do not include bank information in your invoices 
  • Invoices with incomplete information will be returned.  
  • Vendors are encouraged to submit electronically to: Save your invoice file name as: Vendor Name-Invoice Number (example: ACTransit_Invoice12345)
  • Contact or at (510) 891-4860 for any questions.  

AC Transit does business with responsive, responsible businesses that satisfy the specific criteria for the particular procurement as determined by the District.

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Where Do I Begin?

Please visit our Supplier Homepage to register and view current bidding opportunities.

Where does AC Transit advertise?

AC Transit advertises its contracting opportunities in various narrowcasting medium, such as:

  • APTA
  • Bay Area News Group
  • Mass Transit
  • Public Purchase
  • Dodge Reports
  • Builders Exchanges

Solicitation announcements are posted on the Procurement Opportunities page of our website at until bid or proposal submission date.

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Procurement Opportunities


request for proposals

Open Bids

Click on the button below to see currently open solicitations. Click here for the Online Proposal Submittal Guide. Best viewed on Microsoft Edge.

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Supplier portal

All bidders, proposers, vendors, and contractors must be registered in AC Transit's Supplier Portal. Registered entities will be notified via email of any procurement that corresponds to their registered NAICS codes.

Prospective business partners can find open solicitations and/or register as a vendor with us via the link below.

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Contract Awards

Click on the button below to see currently open solicitations. Best viewed on Microsoft Edge.

Contract Awards August 2019 through October 2020 | Legacy Contract Award Data

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Neal Gatherum
Mobile: 801-484-7777 
Adshel/Clear Channel Outdoor
555 12th Street, Suite 950
Oakland, CA 94607
Phone: 510-835-5900
Fax: 510-834-9410

Contact Us

For Vendor Registration & Support:

For Solicitations & Contracts:

For Buyers & Purchasing Department:

For Accounts Payable: